Dotnet Turkey

Mixing the Managed and the Native Type System ManagedCode

Sat, 19 May 2012 06:29:12 GMT

Using the step-by-step approach explained in Chapter 7, you can inject managed code parts into a C project. Due to the source code compatibility, you can easily call from native code to managed code by just declaring the functions you want to call. However, in the samples discussed so far, the managed functions called from native code and the native functions called from managed code have had void as a return type, and no arguments. For nontrivial scenarios, functions with less simplistic...

Overview Roj DotNetApplications

Fri, 18 May 2012 15:33:18 GMT

The .NET Asynchronous Programming Model The Asynchronous Programming Model Design Pattern Protecting State and Data in a Multithreaded Environment A well-designed Microsoft .NET Framework Windows Forms application includes techniques to prevent blocking user interaction. In this module, you will learn about the how to use the techniques of asynchronous programming and multithreading to avoid blocking the user interface of an application. After completing this module, you will be able to...

StepbyStep Walkthrough WPF

Fri, 18 May 2012 08:35:32 GMT

With an understanding of the XMLHttp object in hand, let's walk through this example step by step. A full understanding of it will serve as the foundation for all of the material to come. The user begins, as noted previously, by typing a letter into the text box displayed by Default.aspx. The onkeyup event handler is called, and it checks to make sure the string has at least one letter, obtains the XMLHttp object, and sets the URL with the query string. It then sets the event handler for...

Using the Validation Controls ServerControls

Thu, 17 May 2012 18:25:08 GMT

The demonstration application we provide includes a page that you can use to experiment with the validation controls open the Other Controls section of the left-hand menu . The page contains several textboxes where you have to enter specific values in order for validation to be successful. If you enter invalid values and then click the Submit button, a summary of all the errors is displayed errer LonLrol emami rai.Hr - MicreisaFt Internet 1 Kplarer I 4 - 0 i l3 I SHidi SjFavDfhE l rtjdia l jB '...

Creating the Administration Login adminLoginaspx WebDevelopers

Thu, 17 May 2012 06:04:42 GMT

This is a fairly simple page that uses the asp RequiredFieldValidator server control. There are several server controls that enable HTML form validation All of these controls work in a similar fashion. In this example page, we use RequiredFieldValidator in a code behind page to show how to use a server control to validate user data in HTML forms. 1. In the Web application bookSourceUI, create a new aspx page, and name it adminLogin.aspx. 2. In Design view, drag and drop a...

Implementing SMTP NetworkProgramming

Wed, 16 May 2012 21:13:36 GMT

SMTP operates on TCP port 25. Before sitting down to code, you should first find out the IP address of your ISP's SMTP server. In the examples below, the SMTP server smtp.ntlworld.com is used. You should replace this with your own SMTP server, or the examples will not work. SMTP was originally designed for UNIX users and has a command-line-type feel to it, although the commands are issued over a network connection, rather than a keyboard. A good way to test the protocol is to open telnet by...

Working with vbcexe Response Files Visual Studio 2

Wed, 16 May 2012 10:33:39 GMT

As you might guess, if you were to build a complex VB 2008 application at the command prompt, your life would be full of pain as you type in the flags that specify numerous referenced assemblies and .vb code files. To help lessen your typing burden, the VB 2008 compiler honors the use of response files. VB 2008 response files contain all the instructions to be used during the compilation of your current build. By convention, these files end in an .rsp response extension. Assume that you have...

Common Debugging Question Can I check a process for a resource leak on a production server without installing any programs DebuggingApplications

Sat, 12 May 2012 19:12:30 GMT

Although you can always use PerfMon to perform a quick check, nothing is better than the amazing Task Manager. In the Processes tab, you're allowed to add a column that reports various performance monitor statistics. Since resources are handle-based, you'll need to monitor the handle count for the process. Activate the Processes tab, choose Select Columns from the View menu, and in the Select Columns dialog box, check Handle Count. If you need to watch GDI objects, check GDI Objects as well....

Info Otl CrystalReports

Fri, 11 May 2012 14:52:49 GMT

All of these properties can be viewed or set at run time, but remember, to actually write to the report file with these settings in place, you would need to use the SaveAs method, discussed a little later in this chapter. Now, in our previous example, when we loaded the report, we had no way of knowing whether or not the report had been loaded. Luckily for us, there is an initialization event that is fired whenever a report is loaded. We can use this initialization event to actually tell us...

Introducing Speech API GameProgramming

Thu, 10 May 2012 09:25:44 GMT

Application programming interfaces APIs are present all over the Windows environment, offering high-level interfaces that allow applications to access device features. By device, we mean not only physical devices, such as joysticks or graphics acceleration boards, but also logical devices, like the ODBC or OLE DB devices for data access, or the focus of this section, the interface for speech engines. Speech engines are special drivers that control speech recognition and or speech generation...

Testing the Application Visual Studio 2

Thu, 03 May 2012 14:44:19 GMT

Now fire up your program and enter some XAML into your text area. Do be aware that this program does not allowyou to specify any code generation-centric XAML attributes such as Class or any event handlers . As a test, update the lt StackPanel gt scope as follows lt Rectangle Fill Green Height 40 Width 200 gt lt Button Content OK Height 40 Width 100 gt lt Label Content x Type Label gt lt StackPanel gt Once you click the button, you will see a window appear that renders your XAML definitions or...

DropDownList control DatagridControl

Mon, 30 Apr 2012 16:59:05 GMT

The DropDownList control allows users to select an item from a set of predefined items each item is a separate object with its own properties, such as Text, Value, and Selected. You can add these predefined items to a DropDownList control by using its Items property. Unlike the ListBox control, you can select only one item at a time, and the list of items remains hidden until a user clicks the drop-down button. You can add list items to the DropDownList control in the same way you add items to...

Compiler Settings CodeSnippets

Mon, 30 Apr 2012 15:54:16 GMT

When you select the Compile tab of the project properties, you should see a window similar to the one shown in Figure 1-7. One update to Visual Studio 2010 is the return of the Build Configuration settings. In Visual Studio 2008, the Visual Basic Settings for Visual Studio removed these items from the display and instead, when developers asked to debug their code, a debug version was built and executed, and only if the developer did an explicit build. Note that if you are using Beta 2, you...

NGRESS Figure 415 XmlNodeList Example XMLGuide

Thu, 26 Apr 2012 10:43:30 GMT

new Data Source localhost,-Initial Catalog Pubs User ID sa Pwd OleDbCommand myCommand new OleDbCommand SELECT TOP 3 FROM Authors, myConn OleDbDataAdapter myAdapter new OleDbDataAdapter myCommand XmlDataDocument myDoc new XmlDataDocument myData XmlNodeList myList for int x 0 x lt myList.Count x Console.Write Element x.ToString Console.Write t Console.Write myList x .Name element Console.Write has myList x .Attributes.Count attributes Console.Write n t Console.Write and has myList x...

Security with Remoting in NET 20 Beta .NET Remoting

Thu, 26 Apr 2012 07:51:27 GMT

With the next version of the .NET Framework, version 2.0 codename Whidbey , security is an integral part of the .NET Remoting framework. The security infrastructure for .NET Remoting 2.0 includes authentication as well as channel security similar to the SSPI sample solution described earlier in this chapter. Security in .NET Remoting 2.0 will be configured directly for the channel. Therefore, all you have to know about for leveraging the security infrastructure is a couple of new channel...

Nonwrapped Proxy Metadata .NET Remoting

Tue, 24 Apr 2012 10:57:44 GMT

SoapSuds also allows the generation of nonwrapped proxy metadata as well. In this case, it will only generate empty class definitions, which can then be used by the underlying .NET Remoting TransparentProxy to generate the true method calls no matter which channel you are using. This approach also gives you the advantage of being able to use configuration files for channels, objects, and the corresponding URLs more on this in the next chapter so that you don't have to hard code this...

TableLayoutPanel A Localizable Dialog Box VisualStudio

Sun, 22 Apr 2012 16:48:27 GMT

Imagine you have a simple dialog box that you need to localize. This dialog box has three buttons, arranged one on top of the other. Using the AutoSize property described in Chapter 3, it's fairly easy to make these buttons expand to fit their content. However, it's not as easy to make sure all three buttons have the same size. Ideally, you'd like to make all the buttons take the size of the largest automatically sized button so they line up neatly. Figure 21-17 shows the desired result. Figure...

Other Reverse Engineering Tools DebuggingApplications

Fri, 20 Apr 2012 11:56:43 GMT

ILDASM is an excellent tool, but I want to mention two other tools that I find invaluable. For both of these tools, the price is right they are free The first is Lutz Roeder's .NET Reflector http www.aisto.com roeder dotnet , which does everything that ILDASM does and much more. One of .NET Reflector's key features is that you can easily search for types in an assembly. You'd hope everyone would properly document all the custom exceptions they throw, but they don't always do so. With .NET...

MyMovies Video Kiosk The Solution Visual Basic 2

Thu, 19 Apr 2012 19:47:10 GMT

As mentioned in the preceding section, the solution is to automate the existing system. In other words, any customer walking into the store should be able to use a computer running an application that provides all the information related to a movie, such as the name of the movie, its cast, and the director's name. Using this information, the customer can then decide whether or not to buy the movie. In addition, customers should be able to search for a movie based on some criteria, such as its...

Adding a Watermark WPF

Tue, 17 Apr 2012 12:39:20 GMT

You can improve the user experience by not wasting screen real estate with the Label. Instead, you can add another nifty little widget called the TextBoxWatermarkExtender. Return to the design view, take out the Label, and click on the arrow to the right of the TextBox. Click Add Extender, as you did before, and choose TextBoxWatermarkExtender in the Extender wizard. Then go to the properties window and select the TextBox1_ TextBoxWatermarkExtender control. Set the WatermarkText property to...

Table of Contents WPF

Tue, 17 Apr 2012 07:28:20 GMT

Preface 1. .NET 3.5 A Better Framework for Building MVC, N-Tier, and 2. Introducing XAML A Declarative Way to Create Windows UIs 7 Over Here No, Wait, I Meant Over There 23 It's Alive Or, How I Learned to Stop Worrying and Love Animation 32 3. Introducing Windows Presentation Foundation A Richer Desktop UI 4. Applying WPF Building a Biz Breaking the Application into Pieces 90 Page 1 Adding Items to the Shopping Cart 99 Page 2 Validating the Credit Card 124 5. Introducing AJAX Moving Desktop Uls...

A Validator Example Visual C Sharp

Tue, 17 Apr 2012 06:26:01 GMT

Now it's time to apply what you've learned so far. This example concentrates on using validators under various conditions. In fact, we'll use all four of the common validators described in the previous section. Figure 15.2 shows the layout for a web page. f USUS poukk ji vjijr fee Use f-tfl bi44 fr-tiMc ibj-rsf Ttil Yc-UflSUtlfiMbiil JUjililtga V t-jr .CWtcfi fl aa-J J j'-'.-u jiiaji .ron'ji j vjiiji fef iLc ittofuLapti field briber Lbifcc Tht _ flta iir iK ri iiVrr nw 1pre Ar Kvi far ins ' r-u...

You must specify Stored Procedures 2

Sat, 14 Apr 2012 06:33:38 GMT

A new or existing connection How to create a data adapter using the Data Adapter Configuration Wizard You can create a data adapter to execute an existing stored procedure. This enables disconnected applications to retrieve complex table joins, by using existing functionality in the database. You can create the data adapter by using the Data Adapter Configuration Wizard, or programmatically in your code. You must specify a connection to the required database. You must also specify the name of...

The ASP to ASPNET Migration Assistant Upgrading Visual Basic

Fri, 13 Apr 2012 18:22:35 GMT

Microsoft provides a free tool for automatically converting ASP pages to ASP.NET. The tool does not automatically convert all of the ASP features, but it can simplify an upgrade project by automating some of the steps. To download the migration assistant, see ASP to ASP.NET Migration Assistant in the Microsoft ASP.NET Developer Center on MSDN. If you are upgrading an enterprise application that uses ASP, you may need to use two different upgrade assistants. If the application has a business...

Chapter 6 Gaining Support for the Console Application DataStructure

Tue, 10 Apr 2012 00:29:41 GMT

Figure 6.1 Changing code pages is relatively easy using Win32 API calls. Figure 6.2 Use the settings on the Layout tab to change the output from the GetLargestConsoleWindowSize function. Figure 6.3 The example application demonstrates the usefulness ofthe console mode information. Figure 6.4 The Environmental Variables dialog box contains a set of system and user strings. Figure 6.5 Retrieving command-line arguments and environment strings is relatively easy with .NET. Figure 6.6 Setting...

HjL I y Debug Framework Class 2

Mon, 09 Apr 2012 09:20:49 GMT

ms-help M 5.VS CG M i .M SD rJVS y vbcon, - if' ms-help M 5.VS CG M i .M SD rJVS y vbcon, - if' introduction to t rovide Component lt is jai Eiasic and Vis lt ja' . Concepts Introduction to the Windows Forms Hp'm lt is jai Eiasic and Vis lt ja' . Concepts Introduction to the Windows Forms Hp'm The Windows Forms HelpProvider component i an .htm file with your Windows application. 1 Provide context- sensitive Help for control L Provide context-sensitive Help on a particl Open a Help file to...

Chapter 14 Interoperability CSharpDotNET

Sat, 07 Apr 2012 14:12:42 GMT

Microsoft .NET is a powerful platform, and there are many advantages in writing a new application within the .NET Framework. However, a typical application is not a world unto itself, but is built from legacy components as well as new components, and interoperability is very important. We discussed one kind of interoperability in Chapter 11 in connection with Web Services. Using the SOAP protocol it is possible for .NET applications to call Web Services on other platforms, including Unix,...

Data Access with the Entity Framework CodeSnippets

Fri, 06 Apr 2012 11:57:23 GMT

gt What is Object-Relational Mapping gt What is the Entity Framework gt How the Entity Framework works with databases gt Using the Entity Framework to edit data gt Using the Entity Framework to create new databases In the past, Microsoft has been known to change the recommended data access strategy relatively frequently. For example, Data Access Objects DAO was released in the Visual Basic 3.0 time frame, followed by RDO Remote Data Objects as an option in the Visual Basic 4 days, and ADO...

The ObjectContext CodeSnippets

Fri, 06 Apr 2012 11:50:49 GMT

As you have seen from the preceding queries, you use a context object as the root of all your queries. This context is the logical equivalent of the Connection object in ADO.NET, but it does much more. The context object is a class that inherits from ObjectContext. In addition to providing access to the database, the ObjectContext is also responsible for allowing you to retrieve metadata about the entities within your model and helping the objects track their changes. Once you have made changes...

Using ClientSide Sponsors .NET Remoting

Wed, 04 Apr 2012 04:55:23 GMT

When using client-side sponsors, you are basically mimicking the DCOM behavior of pinging, although you have more control over the process here. After acquiring the reference to a remote object you'll do this mostly for CAOs, as for SAOs the lifetime should normally be managed only by the server , you contact its lifetime service and register the sponsor with it. You can get an object's LifetimeService, which will be an ILease object, using the following line of code ILease lease ILease...

Creating a Parameter Field CrystalReports

Tue, 03 Apr 2012 23:18:12 GMT

The first step in creating a parameter field is specifying a name for that field. Once you have created your parameter field, Crystal Reports will enclose this field name in curly brackets, preceded by a question mark to indicate it is a parameter field ParamFieldName . You can also enter prompting text that will appear whenever the Parameter Field dialog appears, as shown in Figure 3-45. Prompting text should help the user understand what to enter in the value field of the dialog for example,...

Registering Names Using PNRP WindowsCommunication

Tue, 03 Apr 2012 11:15:59 GMT

WCF can use PNRP to discover other participants on a mesh network. In its implementation, the WCF peer channel abstracts away the use of PNRP so an application does not need to work with PNRP directly. However, some peer application might like to publish and resolve identifiers peer names themselves outside of the WCF peer channel. Unfortunately, prior to .NET Framework 3.5 there was no way from managed code to register PNRP names. A new namespace called System.Net.Peer was added in .NET...

Inspecting a threads state DotnetMultithreading

Tue, 03 Apr 2012 05:46:01 GMT

The .NET framework allows for exhaustive inspection of a thread's state. J provides limited facilities for determining a thread's state. The two methods available in J are isAlive and isInterrupted. The isAlive method is functionally equivalent to the framework thread's IsAlive property. There isn't a method in the framework Thread class that is comparable to the isInterrupted function. Initially, isInterrupted returns false. After the interrupt method is called on a J thread the function...

Selecting Data From the Database DatabaseProgramming

Mon, 02 Apr 2012 16:15:52 GMT

You are probably already aware of the most basic type of SQL statement the SELECT statement. Use the SELECT statement to retrieve records from a database. For example, if we want to see all information in the Products table, we would run the following SQL statement The asterisk above designates that we want to see all fields in the Products table. If, instead, we only wanted to find the name of the product, the price, and units that are in stock, the SQL statement below would accomplish this...

Updating Parent DataBound Controls from Child DataBound Controls DataBinding

Fri, 30 Mar 2012 07:04:59 GMT

The trick to reversing master-details scenarios like this is to synchronize the controls bound to parent data items based on the selection of child data items. In this case, the individual data items are rows in two different tables. Those tables have a parent-child relation from the parent Country table to the child ExchangeRates table based on the foreign key constraints from the CountryFromID and Country TolD columns of the ExchangeRates table to the CountrylD column of the Countries table....

Web Service Request Processing WebServices

Thu, 29 Mar 2012 14:07:31 GMT

and call its GetHandler method which returns an HttpHandler object, i.e. an object that implemenents IHttpHandler. This returned object is responsible for handling the incoming request. The type of this object depends on the options you configure on your Web methods. If the Web method being requested uses ASP.NET sessions, then the returned object is a otherwise it is a r as shown in figure 10-1. This HttpHandler object eventually instantiates your Web service class, invoke s the requested...

Children of the Form PropertyAccessibility

Wed, 28 Mar 2012 12:00:25 GMT

The Control class includes an important and very handy read-only property named Controls Control Properties selection The Control class includes an important and very handy read-only property named Controls Control Properties selection Although the Controls property is defined in the Control class, it is useful only in classes descended from Control that are parent to other controls, such as Form. The Control.ControlCollection type defined for this property might look a little peculiar, but...

GetMessage and PeekMessage DataStructure

Tue, 27 Mar 2012 15:13:08 GMT

We've discussed the Windows message pump and several of the messages that can appear within the message queue. You know that whenever an application sends a message, Windows will place the message in the recipient's message queue, which is essentially an In Box for Windows messages. However, we haven't discussed how the recipient actually receives the message so it can act on it. The GetMessage and the PeekMessage functions provide the means for retrieving a message from the Windows message...

Using TopicID as selection criteria DatagridControl

Tue, 27 Mar 2012 14:07:26 GMT

There are a few differences between this page and the Topics page. This page uses the TopicID in the query to get only the threads associated with the topic the user requested Select ThreadID, Name from Threads amp _ _ I do this simply by concatenating the information from the QueryString into my Select statement. I could have, instead, used a parameter and filled in the parame ter with the TopicID. I decided not to in this case because it would have made the code more complicated and wouldn't...

ChannelFactoryo WindowsCommunication

Mon, 26 Mar 2012 21:19:48 GMT

Two classes refer to channel factories within WCF ChannelFactory and ChannelFactory lt gt . They might seem similar, but they are actually separate classes that do different things. The ChannelFactory lt gt class is used in advanced situations where multiple clients need to be created. Essentially it works with a given ChannelFactory, but it does not have any responsibilities for creating a channel stack. The ChannelFactory lt gt class is used by defining the class with a specific...

Creating and invoking DotnetMultithreading

Thu, 22 Mar 2012 12:50:25 GMT

Suppose you know that at some point you need to execute one of five delegates. One way to do that would be to create a large case statement and create each of the delegates. Another alternative is to use the CreateDelegate method of the Delegate class. CreateDelegate allows for late binding. It allows a developer to determine at runtime what method is associated with a particular delegate, along with an optional target. The target is the same as the target from the previous sections in this...

Understanding Conditional Formatting CrystalReports

Thu, 22 Mar 2012 11:01:59 GMT

There are two different kinds of conditional formatting available within Crystal Reports, based on the two different kinds of properties available for Crystal Reports elements. The first deals with Boolean properties, which include things like Suppress and Can Grow, and have an on off state. The second deals with properties that can have multiple outcomes, like font or section colors. While the concepts behind using these two different types of properties are similar, the formulas behind them...

Parameterized Properties CodeSnippets

Tue, 20 Mar 2012 15:38:00 GMT

The Name property you created is an example of a single-value property. You can also create property arrays or parameterized properties. These properties reflect a range, or array, of values. For example, people often have several phone numbers. You might implement a PhoneNumber property as a parameterized property, storing not only phone numbers, but also a description of each number. To retrieve a specific phone number you would write code such as the following Dim homePhone As string...

msdn training msdn Event Procedures 2

Mon, 19 Mar 2012 02:12:57 GMT

Part Number X08-50211 Released 09 2001 Information in this document, including URL and other Internet Web site references, is subject to change without notice. Unless otherwise noted, the example companies, organizations, products, domain names, e-mail addresses, logos, people, places, and events depicted herein are fictitious, and no association with any real company, organization, product, domain name, e-mail address, logo, person, places or events is intended or should be inferred. Complying...

Shadowing Members VisualStudio

Sat, 17 Mar 2012 16:27:25 GMT

Another trick you might want to use with filtering is to shadow a member. Shadowing a member is a technique in which you replace a control property with a duplicate control-designer property that has the same name. This allows your designer to intercept when the property is set, and decide whether it should pass a value to the underlying control at design time. This technique ensures that properties like Visible or Enabled don't have any effect at design time. Note Another way to achieve this...

Using the CType Function CodeSnippets

Fri, 16 Mar 2012 18:15:23 GMT

Whether you are using late binding or not, it can be useful to pass object references around using the Object data type, converting them to an appropriate type when you need to interact with them. This is particularly useful when working with objects that use inheritance or implement multiple interfaces, concepts discussed in Chapter 3. If Option strict is turned off, which is the default, then you can write code using a variable of type Object to make an early-bound method call Public sub...

Implementing a WCF Service WindowsCommunication

Fri, 16 Mar 2012 10:01:53 GMT

This section describes how to implement a simple service with WCF. By simple, we'll assume HTTP as the wire protocol, and we'll assume a text-based representation of an XML document on the wire. For security, we'll assume it's handled somehow in the application. We'll assume a synchronous request-reply conversation and that our service supports just one operation, which takes a string as input and returns a double as output. In later chapters, we'll vary all these assumptions, but for now,...

Cancel DataBinding

Thu, 15 Mar 2012 13:02:03 GMT

Using the property fields in this dialog, you can set fine-grained options for how the cell will display its content, and you can even see what it is going to look like in the Preview pane at the bottom of the dialog. You can also set border styles for cells using the grid's CellBorderStyle, ColumnHeadersBorderStyle, and RowHeadersBorderStyle properties. Using these styles, you can achieve some fairly sophisticated grid appearances, as seen in Figure 6.13. In this sample, default cell styles...

Creating a New Windows Form DotNetApplications

Mon, 12 Mar 2012 17:30:00 GMT

In this exercise, you will update the Internal Business Application shell by adding a logon form and populating it with controls. You will also set form and control properties and implement the Click event handlers for the buttons on the logon form. There are starter and solution files associated with this exercise. Browse to install_folder Labfiles Lab01_1 Ex01 Starter to find the starter files, and browse to install_folder Labfiles Lab01_1 Ex01 Solution to find the solution files. If you...

Using AUTO Mode .NET XML

Mon, 12 Mar 2012 12:37:24 GMT

If we use FOR XML AUTO, the resultant XML not only maps column names to attributes as in RAW mode , but it also maps the table names to the XML element names. This is handy when we want to see the hierarchical nature of a JOIN in a SELECT statement. Consider the following SQL statement, which joins the Categories table to the Products table SELECT Category . CategorylD , Category . CategoryName , Product . ProductID , Product . ProductName FROM Categories AS Category INNER JOIN Products AS...

The Outcome Vbu DebuggingApplications

Mon, 12 Mar 2012 03:01:01 GMT

At first I wasn't sure that anyone was still using the handle-based memory functions GlobalAlloc, GlobalLock, GlobalFree, and GlobalUnlock in Win32 programming. After looking at a disassembly of the third-party control, however, I saw that the control writer obviously ported the control from a 16-bit code base. My first hypothesis was that the control wasn't properly dealing with the handle-based memory API functions. To test my hypothesis, I set some breakpoints on GlobalAlloc, GlobalLock, and...

IPv6 coexistence NetworkProgramming

Sun, 11 Mar 2012 14:00:15 GMT

IPv6 will not replace IPv4 overnight. Instead, there will be a considerable period when both IPv6 and IPv4 will coexist on the Internet. In time, IPv4 will be phased out entirely. This transitional period is important for developers of mass-market software where the network infrastructure of the enduser can be one of several different hybrid systems. IPv6 deployment will take place in a much more organized way than the MBONE project did. The ad hoc deployment of MBONE created islands of...

Anrtioon Bgrtds DataSource

Sat, 10 Mar 2012 17:20:09 GMT

1. In Microsoft Visual Studio .NET, open the UsingWindows project from the Start page or by using the File menu. 2. Double-click the Master.cs form. Visual Studio displays the form in the form designer. r-t-.i gt gt t' u S , 1 i Q gt 3. Press F7 to display the code editor. 4. Add the following event handler to the bottom of the class definition 5. private void FormatName object sender, ConvertEventArgs e if string this.tbCategoryName.Tag PARSE e.Value eStr.ToUpper this.tbCategoryName.Tag FORMAT...

Fragment Navigation Visual Studio 3

Fri, 09 Mar 2012 11:42:09 GMT

If you're navigating to a page with a great deal of content for example, a document such as one could construct using the techniques in Chapter 14 , you might want to navigate not just to a page, but to a specific section of a page. You can do this with fragment navigation, which you can perform by composing the URI with a trailing fragment identifier, like so The fragment name maps to a named element on the target page. For instance, consider Example 11-8, which shows a piece of XAML that...

Using the DirectX Control Panel Application DataStructure

Fri, 09 Mar 2012 08:20:35 GMT

You'll find the DirectX Control Panel Application in the Control Panel after installing the DirectX SDK. This applet has the usual DirectX icon. What it does for developers is nothing less than amazing. Once you begin using this tool, you'll wonder why Microsoft didn't include it in previous versions of the product. Note For whatever reason, the DirectX Control Panel Application doesn't seem to install properly into the Windows XP System32 folder. If this problem occurs on your system, simply...

Drawing bitmaps for our buttons Windows Forms Programming

Wed, 07 Mar 2012 07:36:14 GMT

The creation of graphics for a new product is typically left to the graphic designers and marketing folks. Still, you never know when you may feel the urge to draw a bitmap or icon yourself, so let's look at how to create them from scratch. Fortunately, Microsoft provides a fairly extensive collection of bitmaps, cursors, and icons that can be used within our application. We'll talk about where to find these in a moment. A bitmap is created much like any other item in a project. We will begin...

Upgrading References to Visual Basic 60 Enum Values Upgrading Visual Basic

Tue, 06 Mar 2012 10:44:30 GMT

Upgrading code that refers to any predefined Visual Basic 6.0 enumerator values requires special care. The upgrade wizard may replace the enumerator reference with a new object in Visual Basic .NET that represents the same value, but it is not a simple enumerator value. The examples in this section demonstrate this. If you define a constant in Visual Basic 6.0 to represent a property on a Windows form or control, you may find that the code does not compile after you upgrade the project....

Metrical Dimensions PropertyAccessibility

Mon, 05 Mar 2012 09:06:34 GMT

The dimensions of a form's client area are available from the ClientSize property. These dimensions are always in units of pixels. If you set a new page transform, you probably want the dimensions of the client area not in units of pixels but in units corresponding to what you're now using in the drawing methods. There are at least two ways to get the client size in metrical dimensions. Probably the most convenient way is the VisibleClipBounds property of the Graphics object. This property...

Text and Paths PropertyAccessibility

Mon, 05 Mar 2012 09:05:43 GMT

The GraphicsPath class includes a method named AddString that lets you add a text string to a path. The straight lines and curves that make up the character outlines become part of the path. As usual, however, text is a little different from other graphics objects, and adding text to a path requires some special considerations. The first problem involves the AddString method itself. As you'll recall from Chapter 15, most of the Add methods in GraphicsPath are very similar to the corresponding...

By the way if you use ILDasmexe to examine the intermediate language IL for Main youll see the following which Ive commented FrameworkProgramming

Mon, 05 Mar 2012 07:47:19 GMT

.method private hidebysig static void Main cil managed Construct an array of five Int32 elements. IL_0000 ldc.i4.5 IL_0001 newarr mscorlib System.Int32 Initialize the array's elements with values stored in metadata. IL_000 6 dup IL_000c call void InitializeArray class mscorlib System.Array, valuetype Save the reference to the array in the arr variable. IL_0011 stloc.0 Get the address of arr's 0th element and save it in element. ldelema mscorlib System.Int32 stloc.1 Initialize x to 0. IL_001a...

Comment Comment Comment and Comment DebuggingApplications

Mon, 05 Mar 2012 07:07:41 GMT

One day, my friend Fran ois Poulin, who was working full-time on maintaining some code that someone else wrote, came in wearing a button that said, Code as if whoever maintains your code is a violent psychopath who knows where you live. Fran ois is by no means a psychopath, but he did have a very good point. Although you might think your code is the model of clarity and completely obvious, without descriptive comments it is as bad as raw assembly language to the maintenance developers. The...

Preparing Your Code for the Migration Assistant Upgrading Visual Basic

Sat, 03 Mar 2012 20:09:32 GMT

There are some actions that you can take to modify your code to help the migration assistant improve its automatic conversion and reduce the number of manual changes you have to make after upgrade. The most important of these changes are described in the next sections. Register All Referenced COM Components The first step is to analyze your code to identify all the COM components that your application uses. After compiling the list, ensure that all of the components are correctly installed and...

Referencing Controls on Forms DataDriven

Sat, 03 Mar 2012 13:15:19 GMT

Creating code to run at compile time is a powerful feature, but that code probably needs to reference controls that aren't instantiated until runtime. Examine the code in Listing 3-9. It's very similar to the example shown in Listing 3-1 but instead of displaying a text string in the message box, you display the contents of a user control. Listing 3-9. Referencing a User Control string szCode using System But when you compile this code, the following error is thrown error CS0103 The name...

Summary Tkl WebServices

Fri, 02 Mar 2012 06:17:26 GMT

SOAP Extensions provide an extensibility mechanism for adding custom behavior to Web service request response processing. By encapsulating i nfrastructure services such as security and usage accounting in SOAP extensions, you can build a reusable, flexible, infrastructure components. Developers can apply such components to their Web services using web.config files or CLR custom attributes. 1 There were no implementations of WS-Security at the time of this writing. Therefore it didn't make sense...

Exercises Btb XML How to

Thu, 01 Mar 2012 17:57:02 GMT

8.3 Using JavaScript, add to article.xml's Fig. 8.2 root element lt rating gt lt rating gt Display the result as shown in Fig. 8.3. 8.4 Using JavaScript, create an XML document. The document should have a root element named message that contains the child element myMessage which contains a text node. Render the document using Internet Explorer. Hint. Use the HTML innerText property to display the XML. Also use the xml property of DOMDocument object. 8.5 Enhance the day planner case study Figs....

List Box Text Box Combo Box PropertyAccessibility

Wed, 29 Feb 2012 13:06:56 GMT

In its classical form, the combo box looks like a text box with an arrow at the right. Click the arrow and a list box drops down. But this traditional usage is not the only way in which you can use combo boxes. The critical property is DropDownStyle ComboBox Properties selection The DropDownStyle property is set to a member of the ComboBoxStyle enumeration The DropDownStyle property is set to a member of the ComboBoxStyle enumeration Editable field, list drops down default What I referred to as...

Creating a WPF Client Application WPF

Tue, 28 Feb 2012 15:19:54 GMT

Next, you're going to create a WPF Application called StockQuotes. Leaving the current Visual Studio application running so you don't lose the port YahooQuotes is currently running on , start a new instance of Visual Studio 2008 and select New Project from the File menu. In the ensuing dialog, choose WPF Application as the project type, and name the project StockQuotes. When you've done this, make sure the XAML listing for Window1.xaml reads like this lt Window Title Yahooy Quotes Height 350...

Hosting a Service in Windows Process Activation Services WindowsCommunication

Tue, 28 Feb 2012 14:33:56 GMT

Windows Process Activation Services WAS is the hosting infrastructure built into Vista and Windows Server 2008. Features previously available only in IIS, such as process activation, recycling, and identity management, have been moved into WAS and made available to protocols other than HTTP. WAS enables you to host services in a robust environment that doesn't rely on the HTTP protocol. The HTTP protocol is widely deployed and understood, but there are cases when it's not the best option. For...

Menu Shortcut Keys PropertyAccessibility

Sat, 25 Feb 2012 19:34:26 GMT

I've mentioned the menu keyboard interface involving underlined letters. When the user presses the Alt key, the form goes into a special menu-selection mode. Pressing the F key displays the File submenu, and pressing O is equivalent to clicking the Open item. Windows has an additional keyboard interface to the menu, traditionally known as accelerators but in Windows Forms known as shortcuts. You specify a shortcut by using values of the Shortcut enumeration. In the previous example, the value...

Tip In some applications like the Microsoft Office applications doubleclicking on a label in the status bar is a shortcut for a commonly used feature VisualStudio

Fri, 24 Feb 2012 10:10:30 GMT

The BorderStyle and BorderSides properties allow you to create a border around your label. With status bars, it's a common convention to separate several pieces of information graphically. You can set the BorderStyle property to one of the options in Table 14-5. Table 14-5. BorderStyle Values from the Border3DStyle Enumeration Table 14-5. BorderStyle Values from the Border3DStyle Enumeration The border is drawn just outside the control bounds. This way, you have free rein to perform custom...

The ThreadAbortException class DotnetMultithreading

Thu, 23 Feb 2012 15:36:41 GMT

ThreadAbortException is different from most exceptions in that when the exception is handled, unless ResetAbort is called, exiting the try catch block causes the method to also exit. Recall from section 4.3.2 that ResetAbort allows ThreadAbortException to behave like other exceptions. ThreadAbortException is raised whenever an instance of the Thread class has the Abort method invoked. It allows a thread method opportunity to perform any needed exit processing. Most exceptions behave as follows...

General Breakpoints DebuggingApplications

Thu, 23 Feb 2012 11:25:12 GMT

The first breakpoint concept I want to address concerns the two commands that you use to set breakpoints BP and BU. Both commands take identical parameters and modifiers. You can think of the bp version as a hard breakpoint that WinDBG always associates with an address. If the module containing that breakpoint is unloaded, WinDBG removes the bp breakpoint from the list of breakpoints. bu breakpoints, on the other hand, are associated with a symbol, so WinDBG tracks on the symbol instead of an...

Listing A3 DataBound GridView Sample DataBinding

Tue, 21 Feb 2012 09:42:27 GMT

lt Page Language C AutoEventWreup-'true CodeFile-'Default.aspx.cs lnherits _Default gt lt DOCTYPE html PUBLIC - W3C DTD XHTML 1.1 EN http www.w3.org TR xhtml11 DTD xhtml 11 ,dtd gt lt html gt lt head runat server gt lt title gt Untitled Page lt title gt lt head gt lt body gt lt form id form1 runat server gt lt div gt lt asp GridView ID GridView1 runat-'server AutoGenerateColumns-'False DataKeyNames-'CustomerlD DataSourcelD SqlDataSource1 EmptyDataText-'There are no data records to display. gt...

Performing Explicit conversions CodeSnippets

Tue, 21 Feb 2012 04:35:34 GMT

Keep in mind that even when you choose to allow implicit conversions, these are only allowed for a relatively small number of data types. At some point you'll need to carry out explicit conversions. The following code is an example of some typical conversions between different integer types when option Strict is enabled Dim myShort As Short Dim myUInt16 As UInt16 Dim myInt16 As Int16 Dim myInteger As Integer Dim myUInt32 As UInt32 Dim myInt32 As Int32 Dim myLong As Long Dim myInt64 As Int64...

Differences from Basic Syntax CrystalReports

Mon, 20 Feb 2012 22:29:41 GMT

To start with, a Crystal syntax formula does not require the Formula tag at the end to output the formula results. This is the statement from the Local_Customer_Flag formula field in the customer sales report. You can access this field by opening the report in Visual Studio .NET, selecting View Other Windows Document Outline from the main toolbar, and, in the tree that appears, selecting Formula Fields, right-clicking local_customer_flag, and then selecting Edit. Following is a Basic syntax...

Demonstration Wrapping a Legacy COM Server CSharpDotNET

Mon, 20 Feb 2012 21:06:07 GMT

The best way to get a feel for how this wrapping process works is to perform the operations yourself. The .NET client program is in the directory NetClient. The directory LegacyComServer contains the following files reg bankdual.bat Batch file to register the server unreg bankdual.bat Batch file to unregister the server BankConsole.exe Client executable file The source code for the client and server are in the directories ClientSource and ServerSource respectively. Both programs are written in...

What Is MonoTouch MonoTouch

Sun, 19 Feb 2012 18:27:34 GMT

Overall, the MonoTouch Application Programming Interface API is a combination of the .NET 3.5 Framework's core features and the APIs on the iPhone. MonoTouch provides a bridge interop between the iPhone's native APIs based on Objective-C and C-based APIs to the .NET world that C developers are accustomed to. MonoTouch is made up of the following four components The Monotouch.dll is a C assembly that provides a binding API into the iPhone's native APIs. These native APIs supported include...

GraphicsPath Methods selection 1 PropertyAccessibility

Fri, 17 Feb 2012 15:50:38 GMT

void AddRectangle void AddRectangles void AddPolygon void AddEllipse void AddPie void AddClosedCurve path.AddRectangle new Rectangle 50, 50, 100, 100 path.AddLine 200, 0, 0, 0 You can also add one path to another path GraphicsPath AddPath Method void AddPath GraphicsPath path, bool bConnect The second argument indicates whether the path that is added should be connected to the current subpath. The AddString methods add a text string to the path. The syntax of these methods is quite different...

Vbnet Wex NetworkProgramming

Thu, 16 Feb 2012 23:38:08 GMT

Private Sub btnSend_Click ByVal sender As System.Object, _ ByVal e As System.EventArgs Handles btnSend.Click Dim msg As Byte If Not Socket.SupportsIPv6 Then MessageBox.Show Cannot support IPv6 Return End If Dim ipAddrv6 As IPAddress _ IPAddress.Parse tbIPv6Addr.Text Dim ipEPv6 As IPEndPoint New IPEndPoint ipAddrv6, port Dim ipv6Socket As Socket ipv6Socket New Socket _ AddressFamily.InterNetworkV6, SocketType.Stream, _ ProtocolType.Tcp ipv6Socket.Connect ipEPv6 msg Encoding.ASCII.GetBytes...

Controlling SOAP Message Style WebServices

Thu, 16 Feb 2012 22:03:20 GMT

.NET Web services use document literal SOAP messages by default. This is generally acceptable as messaging Web services are centered on XML documents and their schemas. In some cases however, you ll need to use RPC encoded SOAP messages. For example, if you want to expose your Web service to clients that understand only RPC encoded SOAP. At the Web service level, you control the style of SOA P message by applying SoapRpcService or SoapDocumentService the default attributes to the class that...

Index Ptf DataBinding

Thu, 16 Feb 2012 20:36:44 GMT

SYMBOLi A i C Q i E rn t l ID y Ml CsU E El Ml EJ y Bfl W Val property, virtual mode Validate method ValidateChildren method using AutoValidate property validation down control hierarchy validation up control hierarchy Validated events DataGridView defined overview of setting error provider message in response to Validation calling EndEdit and capturing data errors on data sets data concurrency resolution DataGridView DataError event DataGridView error displays DataGridView events down control...

Implementing the PluginManager class WindowsMobile

Thu, 16 Feb 2012 10:37:32 GMT

The PluginManager class will make use of a single instance of the PluginCollection object to hold a list of plugins that are installed on the framework. It will also contain functions that handle the installation of new plugins or the removing of existing ones. More importantly, this class will also need to be able to persist the PluginCollection to disk and to also load it back from disk. This class is expected to use .NET reflection and XML services, so you will need to import the references...

Creating a Report from an ADO NET Dataset CrystalReports

Thu, 16 Feb 2012 04:46:40 GMT

The CustomerOrders dataset for the database object we have built will be populated when the application is started. When designing a report based on this dataset, we cannot browse the content of any of the fields as the dataset hasn't been populated at this point, but if you do have any questions about what type of content the fields could contain, view the database to find out, or use a viewing application like the one we have just built. To create a report based on an ADO .NET dataset, start...

Hosting remote objects within a Windows service NetworkProgramming

Wed, 15 Feb 2012 12:26:23 GMT

When an application is designed to run unattended on a computer, and has no need for a user interface, it should run as a Windows service. Windows services run in the background even when no user is currently logged on. They are controlled via Control Panel Administrative Tools Services, where you can start, stop, and restart the service, as well as view information about it. It is possible to use IIS as a host for remoting objects, but if you are developing a mass-market software product, not...

XML and XSD WebServices

Mon, 13 Feb 2012 20:41:46 GMT

Extensible Markup Language XML is the basic format for representing data on the Web services platform. In addition to being simple to create and parse, XML was chosen because it is neither platform nor vendor specific. Being neutral is more important than being technically superior Software vendors are much more likely to adopt a neutral technology rather than one t hat was invented by a competitor. XML provides a simple way of representing data, but it says nothing about the standard set of...

ThreadPool class and QueueUserWorkItem DotnetMultithreading

Mon, 13 Feb 2012 16:27:42 GMT

In chapter 8 we constructed a simplistic thread pool implementation not surprisingly the result was somewhat complex. A thread pool allows for a simple means of performing multiple tasks on different threads. The thread pool manages its threads It controls their number, lifetime, priority, and activities. The example in listing 10.1 demonstrates adding items for the ThreadPool to process using the QueueUserWorkItem method. Listing 10.1 ThreadPool example C ThreadMethod is invoked by the thread...

Using a Mesh Example DataStructure

Mon, 13 Feb 2012 15:48:34 GMT

Now that you've seen how a mesh is constructed and how to test the content of an X file, it's time to see what you've learned in action. The example in this section performs the simple task of loading an X file and rendering it. The example code will demonstrate that some of the DirectX code is the same as you've used in the past but other code is different because of the managed environment. In fact, this example contains a few surprises that you might not have expected. Note A lot of...

Listing 36 Connecting Data Sources to Controls with a BindingSource DataBinding

Sat, 11 Feb 2012 16:19:36 GMT

private void On Form Load object sender, EventArgs e Set up event handlers for connector position changed and text box text changed events OnPositionChanged m_PositionTextBox.TextChanged OnPositionTextChanged Set up data bindings CustomersDataSet nwData CustomersDataSet.GetCustomersQ m_CustomersGrid.DataSource m_CustomersBindingSource m_CustomersBindingSource.DataSource nwData.Customers AddTextBoxDataBindings AddComboBoxDataBindingsQ private void AddTextBoxDataBindings m_CustomersBindingSource,...

Conventions DataBinding

Sat, 11 Feb 2012 11:16:26 GMT

Developing applications is more about tools and less about code. However, there is a lot of code in this book, and I have adopted some common conventions to help make things easier. References to classes, variables, namespaces, and other artifacts that manifest themselves in code are in a monospace font this helps you distinguish an instance of theDataSet class from a conceptual discussion of data sets. Short code listings are presented inline within the text using a different monospace font...

Example web site monitoring DotnetMultithreading

Fri, 10 Feb 2012 03:42:11 GMT

When a web site stops working correctly, the time it is unavailable can often be measured in dollars. The example we'll use in this chapter is a web site monitor, a program used to ensure that a web site is in a state such that it can service user requests in a timely manner. One approach to web site monitoring is to have a predefined page that returns an indication of health. The page is retrieved at regular intervals. This page often exercises various objects or assemblies, perhaps accesses a...

Probing for Assembly Files Framework Programming 2

Thu, 09 Feb 2012 08:05:45 GMT

When the CLR needs to locate an assembly, it scans several subdirectories. Here is the order in which directories are probed for a culture-neutral assembly AppBase AsmName.dll AppBase AsmName AsmName.dll AppBase privatePath1 AsmName.dll AppBase privatePath1 AsmName AsmName.dll AppBase privatePath2 AsmName.dll In the example above, no configuration file would be needed if the JeffTypes assembly files were deployed to a subdirectory called JeffTypes since the CLR would automatically scan for a...

DragandDrop Functionality Upgrading Visual Basic

Thu, 09 Feb 2012 04:02:50 GMT

Drag-and-drop capability is an important feature of most modern form-based applications. There are a number of important differences in drag-and-drop functionality between Visual Basic 6.0 and Visual Basic .NET. This section provides an overview of the differences so that you can better understand how they will affect your application. Drag-and-Drop Functionality in Visual Basic 6.0 Visual Basic 6.0 supports two kinds of drag-and-drop operations standard drag-and-drop functionality, which...

Using Prebuilt Type Editors VisualStudio

Wed, 08 Feb 2012 11:42:00 GMT

The base UITypeEditor class is found in the System.Drawing.Design namespace. You can inherit from this class to create your custom type editors, or you can use one of the derived classes that are provided with the .NET Framework. Table 13-6 shows a sampling of useful type editors editors that are usable only with specific Web controls have been omitted . Table 13-6. UITypeEditors in the .NETFramework Edits an array by allowing the programmer to enter a list of strings. Used automatically for...

Common Debugging Question Is there anything you can do to fix blown stacks from infinite recursion DebuggingApplications

Tue, 07 Feb 2012 12:11:12 GMT

Infinite recursion is not, thank goodness, that common, but when it does happen, it's nearly impossible to debug. If you've ever seen an application appear to pause for a second or so and completely disappear without displaying an Application Error dialog box, you're almost certainly looking at infinite recursion. If you can't even get a chance to debug the application, it's very hard to figure out what went wrong with it. Fortunately, the new _resetstkoflw C run-time function attempts to get...

Create the Login Page WPF

Sat, 04 Feb 2012 18:13:23 GMT

Create a new page, remembering to hook it to the Master Page as described earlier in this chapter. Name the new page Login.aspx. You'll define the layout of the new page with HTML tables rather than CSS. It is usually preferable to use CSS in web interface development these days, but in this case we feel it will be easier for you to visualize how all the parts come together if you use tables. Insert the following snippet of code into Login.aspx, placing it inside the content placeholder tag...

Using CrossTabs CrystalReports

Thu, 02 Feb 2012 10:29:28 GMT

Cross-tabs within Crystal Reports .NET can be used to display summarized data in rows and columns, similar to a spreadsheet. If you want to create a report with a cross-tab as its main feature, there is a Cross-Tab Expert available that will guide you through the steps to do so. You can also insert a cross-tab into an existing report, which we will walk through here. You may want to create a copy of the report we have been working with before starting this section. That way you can always...

Clipboard Data Formats PropertyAccessibility

Thu, 02 Feb 2012 02:59:40 GMT

At first, it seems so simple you put an object of type String, Bitmap, Metafile, or even Button on the clipboard, and you extract an object of type String, Bitmap, Metafile, or Button from the clipboard. But not every application running under Windows is a Windows Forms program Some Windows programs place objects on the clipboard that don't directly correspond to Windows Forms types. The problem goes both ways Windows applications that make use of the Win32 API or MFC are not prepared to deal...

IButtonControl Methods PropertyAccessibility

Mon, 30 Jan 2012 12:05:39 GMT

void NotifyDefault bool bDefault void PerformClick When a control implementing IButtonControl gets a call to NotifyDefault with an argument of true, it is responsible for visually indicating that it is the default control and hence will respond to the Enter key . A button indicates that it's the default control with a bold outline. The PerformClick method simulates a button click. That's the method of the default Button control that the form calls when the Enter key is pressed. Generally, the...

Figure 47 Currency Exchange Data Set DataBinding

Sun, 29 Jan 2012 12:05:26 GMT

The user interface shown in Figure 4.6 lets users browse through the records of exchange rate data, with the related country information for each exchange rate included in the formas if it were all stored as a single table of data. However, the normalized format of the data in the data set reguires some additional work to provide this appearance to the user. To support this display, each exchange rate record needs to retrieve two corresponding country records to display their data in place with...

Crse3359ae Lab01 CoreFoundations

Fri, 27 Jan 2012 02:17:11 GMT

You want to customize the way in which the values for certain members of the CRM and Customer class are stored in a target XML file during serialization. For this, you need to apply appropriate XML attributes to the members of the Customer and CRM class. The principal tasks for this exercise are Open an existing Console application. Apply XML attributes to the members of a class. 1. Open an existing Console application. Open Microsoft Visual Studio 2005. Locate and open the existing Console...

Task 1 Open an existing application CoreFoundations

Fri, 27 Jan 2012 00:21:57 GMT

1. On the Start menu, point to All Programs, point to Microsoft Visual Studio 2005, and then click Microsoft Visual Studio 2005. 2. To open an existing console application, in Microsoft Visual Studio 2005, click File, point to Open, and then click Project Solution. 3. To locate the existing console application, in the Open Project dialog box, click the Look in list, and then open the folder For Visual Basic 2005 For C 4. Double-click the crse3368ae_lab01.sln file.