Dotnet Turkey

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.

Filtering Data with WHERE Database Programming 2

Thu, 26 Jan 2012 08:23:53 GMT

In the previous example, we selected all records from certain columns in the Products table. What if we only want to see products that sell for less than 25 When we want to filter data so that only records meeting certain criteria are retrieved, we can use a WHERE clause in our SQL statement, as shown below SELECT ProductName, UnitPrice, UnitsInStock FROM Products WHERE UnitPrice lt 25 The WHERE clause specifies that the UnitPrice should be less than 25, so that the above SQL statement will...

Selfreview Exercises Lle XML How to

Wed, 25 Jan 2012 12:30:58 GMT

State whether the following are true or false. If false, explain why. a XML is a technology for creating markup languages. b XML markup text is delimited by forward and backward slashes and . c Arabic characters can only be placed in to an XML document using an Arabic language keyboard. d Unlike HTML, all XML start tags must have corresponding end tags. e Parsers check an XML document's syntax and may support the Document Object Model and or the Simple API for XML. f An XML document is...

Comparing WCF Serialization Options WindowsCommunication

Fri, 20 Jan 2012 11:32:40 GMT

There are many ways to use serialization objects using WCF. Determining which mechanism to use for serialization depends on a number of factors. These include whether you want to share types or contracts, support existing .NET types, preserve references, and more. The default serialization mechanism for WCF is the DataContractSerializer. This class can be found in the System.Runtime.Serialization namespace. The DataContractSerializer is built to support the sharing of contracts based on XSD...

Calling the stored Procedure CodeSnippets

Wed, 18 Jan 2012 14:41:25 GMT

Calling the stored procedure is just a matter of creating a SqlConnection object to connect to the database, and a SqlCommand object to run the stored procedure. Now you have to decide what you want to return by calling the stored procedure. In this case, you return an instance of the SqlDataReader object. The TestForm.vb file contains a method called GetAuthorSqlReader that takes an author ID and returns an instance of a SqlDataReader. Here is the code for the method Private Function...

Deploy Performance Counter Categories and Counters with the PerformanceCounterlnstaller Component DeployingApplications

Tue, 17 Jan 2012 10:44:32 GMT

The easiest way to incorporate performance counters in your .NET application is to use PerformanceCounter components. You can use these components to read values from existing predefined counters, such as memory or processor counters, and you can also read from and write to custom counters that you create. For example, you might use the Server Explorer to create a new performance counter category named MyApp, and then create counters for monitoring your application performance, such as...

Updating Your DataSet by Using the DataTable and DataRow Objects ConnectionObjects

Fri, 13 Jan 2012 22:22:56 GMT

Earlier in this chapter, we showed you how to update your database by using parameterized stored procedures. Although this is efficient for making single row changes, it isn't quite useful when you have a significant number of changes to pass to the server. What happens when you want to apply changes in bulk Consider an e-commerce application that uses an online shopping cart. The shopping cart could have multiple rows of data that would be inserted and updated as the user browsed through the...

i1 TicTacToe Visual Studio 3

Wed, 11 Jan 2012 15:22:27 GMT

Figure 9-1. Tic-tac-toe boards don't have rounded insets What we really want here is to be able to keep the behavior i.e., holding content and firing click events , but to take over the look of it. WPF allows this kind of thing because the intrinsic controls are built to be lookless i.e., they provide behavior, but the control's user can swap out the look completely . The default look comes from the system-provided template, as described in Chapter 12. Remember from Chapters 6 and 8 how we used...

Scenario Oau CoreFoundations

Wed, 11 Jan 2012 08:10:03 GMT

You want to modify the order entry application to automatically print the documents when a customer order is placed. To do this, you need to write code in the Customer class to create a new event that will be fired when an order is placed for a customer. The high-level steps for this task are as follows Open the existing application. Open Microsoft Visual Studio 2005. Locate and open the existing console application crse3368ae_lab01.sln. Use E Labfiles Starter VB crse3368ae_lab01 or E Labfiles...

Creating the Inherited Form ComponentServices

Tue, 10 Jan 2012 17:46:48 GMT

To explain how to create an inherited form. Creating an inherited form is simple. After you have designed your base form and built the solution, you are ready to begin deriving forms. To do this, you simply add a new item to the project by clicking Inherited Form in the Add New Item window. This will run the Inheritance Picker for you. When inheriting from a base Windows Form, consider the following guidelines carefully Ensure that the base form is as complete as possible. Make any last minute...

Displaying Help as Web Forms or HTML Web Applications 2

Tue, 10 Jan 2012 08:37:30 GMT

Creating your Help content as Web forms or HTML pages is probably the simplest approach to providing user assistance. The Help files can reside in either the same project folder as your Web application or in a subordinate folder. You use hyperlinks or other controls to display the Help in the browser, just as you would any other page, with one important difference you usually want to display Help in a new window or in a separate frame from the rest of the Web application, as shown in Figure...

Build All Builds with Debugging Symbols DebuggingApplications

Mon, 09 Jan 2012 12:04:24 GMT

Some of the debugging system recommendations that I do make aren't that controversial. I've been harping on my first recommendation for years build all builds, including release builds, with full debugging symbols. Debugging symbols are the data that let the debugger show you source and line information, variable names, and data type information for your program. All that information is stored in a .PDB Program Database file associated with your modules. If you're paid by the hour, spending...

Crse3358ae Lab01 CoreFoundations

Sun, 08 Jan 2012 07:57:49 GMT

You want to list the existing journal entries represented by individual files in a subdirectory named Entries. For this you need to use the DirectoryInfo class to retrieve the list of files in the corresponding subdirectory. The principal tasks for this exercise are as follows Open an existing Console application. Write code to list the existing journal entries by using the System.IO.DirectoryInfo class. 1. Open an existing Console application. Open Microsoft Visual Studio 2005. Locate and open...

The User Interface Database Programming 2

Fri, 06 Jan 2012 21:08:07 GMT

So you've learned how to design a database and how to update information in it using suitable SQL statements. We can't expect our users to open up an administrative database tool and manipulate the data directly like this, so our next step is to create some way for users to access information. This is the role of the user interface - to provide a means of communication between the user and the database. Through the user interface, users may interact with data and manipulate it in order to...

Exercise 2 Create a Translator Class Web Applications 2

Wed, 04 Jan 2012 21:06:17 GMT

In this exercise, you will create a Friend class to contain the logic and data that the Translator application uses. 1. From the Project menu, choose Add Class. Visual Studio displays the Add New Item dialog box. Name the class TranslatorClass.vb and click Open. 2. In the code window, add the following code Private mstrText As String Private mstrOriginal As String ' Controls access to the module-level ' variables. Public Property Text As String Get Set ByVal Value As String mstrText Value '...

String Constants CodeSnippets

Wed, 04 Jan 2012 16:05:00 GMT

If you ever have to produce output based on a string you'll quickly find yourself needing to embed certain constant values. For example, it's always useful to be able to add a carriage-return linefeed combination to trigger a new line in a message box. One way to do this is to learn the underlying ASCII codes and then embed these control characters directly into your String or StringBuilder object. Visual Basic provides an easier solution for working with these the...

Graphics Drawlmage Methods selection PropertyAccessibility

Wed, 04 Jan 2012 14:46:48 GMT

void DrawImage Image image, int x, int y, int cx, int cy void DrawImage Image image, float x, float y, float cx, float cy void DrawImage Image image, Rectangle rect void DrawImage Image image, RectangleF rectf These methods scale the image to the size of the rectangle, either stretching or compressing it to fit. One common use of these methods is to display an image in its pixel size rather than its metrical size. If page units are pixels, simply call grfx.DrawImage image, x, y, image.Width,...

Defining the IDataLibPlugin interface WindowsMobile

Wed, 04 Jan 2012 11:06:36 GMT

At the heart of the data tier lies the IDataLibPlugin interface. It contains a set of method definitions that define how the sales force application communicates with the SQL Server CE and Oracle Lite databases. An interface is a collection of method definitions without the implementation . A class that implements an interface has to provide implementations for each and every defined method of the interface. Interfaces are great for defining a consistent set of behavior that different classes...

Description Buq StandardLibrary

Tue, 03 Jan 2012 01:23:38 GMT

The System.Text.Encoding.GetEncoding method relies on the underlying platform to support most code pages. However, system support is supplied for the following cases The default encoding, that is, the encoding specified in the regional settings for the computer executing this method little-endian Unicode UTF-16LE big-endian Unicode UTF-16BE Windows operating system Windows-1252 UTF-7 UTF-8 ASCII and GB18030 Chinese Simplified . Specify one of the names listed in the following table to obtain...

ToolStrip Basics VisualStudio

Tue, 03 Jan 2012 01:14:19 GMT

The ToolStrip is the basis of the StatusStrip, MenuStrip, and ContextMenuStrip controls you'll consider in this chapter, and a slick stand-alone control of its own. To get off to a quick start with ToolStrip, drag it onto a form, select it, and choose Insert Standard Items from the smart tag. This adds a basic set of buttons including File, Open, Save, and Print, the editing commands Cut, Copy, and Paste, and a Help button. When you run this example, you'll immediately notice that the ToolStrip...

Frequently Asked Questions Dme BizTalkServer

Mon, 02 Jan 2012 08:32:40 GMT

The following Frequently Asked Questions, answered by the authors of this book, are designed to both measure your understanding of the concepts presented in this chapter and to assist you with real-life implementation of these concepts. To have your questions about this chapter answered by the author, browse to www.syngress.com solutions and click on the Ask the Author form. Q I attempted to delete a BizTalk server from the BizTalk Server Group in the BizTalk Server Administration Microsoft...

DateTimePicker Controls DataBinding

Sun, 01 Jan 2012 09:07:45 GMT

The DateTimePicker is a fairly complex control that allows the display and editing of formatted date and time information. It looks like a ComboBoxwith the date and time information displayed in text form within it. The formatting of that display can be set based on a number of predefined formats or by using a custom formatting string. When the drop-down arrow is selected, a calendar control appears, allowing an intuitive and rich date selection mechanism. The ValueChanged event is the default...

Lab Working With Site Navigation Web Based Clients

Fri, 30 Dec 2011 09:36:31 GMT

In this lab, you create a Web application using frames. The top frame contains a title for your Web application and a SiteMapPath control. The left frame contains a Tree-View control for navigation. Clicking any node on the TreeView or SiteMapPath controls cause the main frame to load the desired page. Exercise 1 Create the Web Application Project and Its Frames In this exercise, you create the Web application project. You also configure Default.aspx to be a frames page and add the top and left...

Defining a FaultContract WindowsCommunication

Thu, 29 Dec 2011 14:20:31 GMT

After you have one or more data contracts that you want to use to convey exception details to your callers, add the FaultContract attribute to your operation, specifying the name of the associated data contract s . For example, the Approvelnvoice operation in Listing 10.10 has been extended to potentially raise a FaultException based on the TrackedFault data contract we defined earlier. Listing 10.10 Extending an Operation Definition with a FaultContract OperationContract FaultContract...

ToolStripDropDownButton ClientDevelopment

Wed, 28 Dec 2011 17:59:02 GMT

The ToolStripDropDownButton allows you to create a drop-down menu that appears when the button is clicked. At design time, you can create the menu by typing text for menu items in the menu designer, as shown in Figure 4-2. Figure 4-2 Creating a menu with the ToolStripDropDownButton Figure 4-2 Creating a menu with the ToolStripDropDownButton Each menu item has its own ToolStripMenuItemClick event that you can respond to.

Working with Server Performance Counters CodeTechniques

Mon, 26 Dec 2011 16:04:16 GMT

As we examined in Accessing the Windows Event Log, the .NET Framework contains a System.Diagnostics namespace that houses classes which can be used for diagnostic information. One such class is the EventLog class, which we just looked at in the previous section another useful diagnostics class is the PerformanceCounter class. This class gives the developer direct read access to the existing Windows Performance counters and provides the capability to create new performance counters Because this...

Core Concepts CodeNotes

Mon, 26 Dec 2011 04:34:38 GMT

Producing .NET applications and components requires a compiler that translates source code into IL code. VS.NET, Microsoft's new version of Visual Studio, contains three such compilers VB.NET, C , and managed C . While a full examination of these languages is beyond the scope of a CodeNote, each language is briefly discussed below. Code examples throughout this book will demonstrate some of the nuances of each language and the syntactical differences between them. In addition to the IDE, VS.NET...

PrintPreviewDialog EventHandler

Sun, 25 Dec 2011 08:51:38 GMT

The PrintPreviewDialog component displays a dialog box that allows the user to view a document before printing it. Prior to showing the dialog box, the PrintPreviewDialog object must be loaded with information about the document to be printed. See Printing in Chapter 4 for details. The dialog box itself displays a preview of the printed version of the document, allowing the user to navigate through it. Figure 5-20 shows an example of the PrintPreviewDialog dialog box, although this example...

Customizing Your Installer Upgrading Visual Basic

Fri, 23 Dec 2011 07:17:42 GMT

In most cases, a standard installer with default options is not sufficient to meet the deployment requirements of an application. You may need to add dialog boxes, text, Help files, and more, to your setup program. In Visual Basic 6.0, this required you to either modify the setup script file or modify the Setup1.exe project template used by the wizard. In Visual Basic .NET, you can use the project's properties and the editors provided in Visual Studio .NET to make these changes. The editors are...

Root Elements WPF

Thu, 22 Dec 2011 09:17:50 GMT

Root elements are special derivations of panel elements. They serve as the fundamental containers for pages. Every page requires exactly one root element. In the next chapter, when we build an application with Visual Studio, you will notice that the default root element is Grid. It is not uncommon for other panel elements e.g., StackPanel, DockPanel, or Canvas, as well as Page and Window to serve as root elements. The root element must contain a reference to the namespace needed by the other...

Voice In The World Of Net SpecExplorer

Wed, 21 Dec 2011 19:04:31 GMT

.NETDeveloper's Journal is the leading independent monthly publication targeted at .NET developers, particularly advanced developers. It brings .NET developers everything they need to know in order to create great software. Published monthly, .NET Developer's Journal covers everything of interest to developers working with Microsoft .NET technologies - all from a completely independent and nonbiased perspective. Articles are carefully selected for their prime technical content - technical...

Create Content Management Systems

Tue, 20 Dec 2011 01:58:44 GMT

The account administration would be quite useless if you couldn't create a new account. Figure 12-5 shows the AdmAcntCreate Web page that is designed for this task. n Adjnhiiitrai amp rj . Uidliui Crcatt Tr'j i l- L -L-I K in n i. ' v.Li MI M I Figure 12-5 The AdmAcntCreate Web page Looking at Figure 12-5, you should spot something you haven't used before the multiselect list box. The list box stores all the possible roles in the system that a user can have. Listing 12-21 shows the design code...

D Njr SolutionArchitectures

Mon, 19 Dec 2011 22:18:55 GMT

8. Trevor is a junior programmer at a large, multi-national human resources consulting firm. Trevor has been asked to recommend a security model for the .NET-based application his project team is working on. The application's user IDs and passwords will be stored inside a SQL Server database. Which .NET Framework component can be used to enable an application to use its own user ID and password authentication system 9. Which of the following statements best describes the primary benefit of...

Using a Custom Proxy .NET Remoting

Mon, 19 Dec 2011 09:00:30 GMT

In the previous parts of this chapter, you read about the possible ways you can extend the .NET Remoting framework using additional custom message sinks. There is another option for changing the default behavior of the remoting system custom proxy objects. Figure 13-12 shows you the default proxy configuration. Figure 13-12. The default combination of proxy objects Figure 13-12. The default combination of proxy objects You can change this by replacing RemotingProxy with a custom proxy that...

Opening a child form Windows Forms Programming

Fri, 16 Dec 2011 10:55:58 GMT

The Open menu in the parent form should work much like the now hidden Open menu for the MainForm class. The handler for this menu should display an Open-FileDialog and create a new child window containing the selected album. To create the MainForm instance, we will create a new constructor that accepts an album file name with which to initialize the window. The code required here is nothing new to us, so let's get to it. IMPLEMENT HANDLER FOR OPEN MENU IN PARENT FORM Add a using statement for...

Building and Consuming a Multifile Assembly Visual Studio 2

Fri, 16 Dec 2011 09:01:13 GMT

Now that you have constructed and consumed a single-file assembly, let's examine the process of building a multifile assembly. Recall that a multifile assembly is simply a collection of related modules which has nothing to do with the Visual Basic 2008 Module keyword that are deployed and versioned as a single logical unit. At the time of this writing, Visual Studio 2008 does not support a VB 2008 multifile assembly project template. Therefore, you will need to make use of the command-line...

Caps and Joins PropertyAccessibility

Thu, 15 Dec 2011 19:10:32 GMT

As the PenDashStyle program indicates, when lines start to get wide, they assume a graphical form of their own. You may like the square and rectangular appearance of the dots and dashes in styled lines, but you may prefer a more rounded appearance instead. This is the realm of line caps also known as ends and joins. The cap governs the appearance of the lines at their beginning and end, or the appearance of the dots and dashes. The join governs what happens at the meeting of two connected...

Creating and Using Controls DotNetApplications

Wed, 14 Dec 2011 21:12:40 GMT

In this exercise, you will begin by opening an existing Windows Forms application. You will add a ToolBar control to the main form of the application, add the appropriate number of buttons to the ToolBar control, and set values for each of the buttons. After the design for the toolbar is complete, you will develop the code that handles the ButtonClick event of the toolbar and responds appropriately for each of the different buttons. You will then develop the code statements required to create...

Nested framesets XML How to

Wed, 14 Dec 2011 04:04:53 GMT

You can use the frameset element to create more complex layouts in a framed Web site by nesting frameset areas as in Fig. 3.10. The first level of frameset tags is on lines 21 and 22 frameset cols 110, gt frame name navsrc nav.html gt The frameset and frame elements here are constructed in the same manner as in Fig. 3.9. We have one frame that extends over the first 110 pixels starting at the left edge. The second nested level of the frameset element covers only the remaining frame area that...

String CompareOrdinal Static Method PropertyAccessibility

Wed, 14 Dec 2011 02:35:34 GMT

int CompareOrdinal string str1, string str2 int CompareOrdinal string str1, int iStartIndex1, string str2, int iStartIndex2, int iCount The static Compare methods perform a lexical comparison String Compare Static Method int Compare string str1, string str2 int Compare string strl, string str2, bool blgnoreCase int Compare string strl, string str2, bool blgnoreCase, Culturelnfo ei int Compare string strl, int iStartlndexl, string str2, int iStartIndex2, int iCount int Compare string strl, int...

Detecting context switching DotnetMultithreading

Tue, 13 Dec 2011 23:01:37 GMT

The Performance Monitoring program perfmon.exe is useful in determining how many context switches are occurring per second. In Windows 2000 the Performance Monitoring program is located in the Administrative Tools group under Programs in the Start menu. Figure 1.4 shows the impact of executing the program in listing 1.9. The four bumps in the graph occurred during the time between when Created x Workers was written to the console and when Stopped x Workers was written to the console. Not...

The QuickWatch Dialog Box Learning Visual Basic

Tue, 13 Dec 2011 21:03:17 GMT

You use the QuickWatch dialog box to, as its name implies, quickly evaluate a variable or expression. Figure 12-20 shows a QuickWatch dialog box. Figure 12-20 The QuickWatch dialog box The QuickWatch dialog box is an alternative to the Watch window. The QuickWatch dialog box provides a quicker, simpler way of evaluating or editing a single variable or expression than does the Watch window. However, QuickWatch is a modal dialog box, so unlike the Watch window, you cannot leave the QuickWatch...

Adding a toggle button Windows Forms Programming

Tue, 13 Dec 2011 20:42:34 GMT

Our final toolbar button will illustrate the ToggleButton style to show and hide the pixel data dialog created in chapter 8. Toggle buttons, as you may recall from chapter 9, provide two different states one when the button is pressed in, and one when it is not. We will do something a little different here that seems appropriate for our example. If you are keeping track of the images available in our image list, you may realize there are two images left, while only one more button. We will use...

The Common Language Specification Framework Programming 2

Tue, 13 Dec 2011 20:33:55 GMT

COM allows objects created in different languages to communicate with one another. On the other hand, the CLR now integrates all languages and allows objects created in one language to be treated as equal citizens by code written in a completely different language. This integration is possible because of the CLR's standard set of types, self-describing type information metadata , and common execution environment. While this language integration is a fantastic goal, the truth of the matter is...

flifrafc I QpqjjSf lfr HcO Learning Visual Basic

Tue, 13 Dec 2011 18:23:02 GMT

Figure 4-1 Overflow error while project is running Since an Integer data type can represent any whole number that you can represent with a Byte data type, and has a far greater range, you could avoid, or at least minimize, overflow errors by always using the Integer data type instead of the Byte data type. However, there is a downside to this solution. While the Byte data type only requires 1 byte of memory, the Integer data type requires 4. The difference between 1 and 4 bytes might seem...

Overview of the NET Mobile Architecture MobileInternet

Tue, 13 Dec 2011 18:04:55 GMT

The Mobile Internet Toolkit is built on the Microsoft ASP.NET Web Forms which we discuss in more detail in Chapter 3 . Just as the ASP.NET WebControls provide an improved level of cross browser platform independence in your applications, the Mobile Controls give you an improved level of cross-mobile, devie platform independence.The toolkit includes a set of Mobile Controls that is executed by the Mobile Internet Controls runtime during the execution phase. The key feature of the runtime is its...

CallContext Class .NET Remoting

Tue, 13 Dec 2011 17:06:06 GMT

The CallContext class allows you to carry additional properties within the message exchanged between the client and the server. Therefore, you can include some additional metadata that can be used either by the server or by the client. This metadata has nothing to do with the actual business logic but more with some infrastructural topics. Typical examples are things like security-related information as authentication method and encryption method. Another example is including some message IDs...

Description 1 EventHandler

Tue, 13 Dec 2011 16:27:41 GMT

Specifies whether the program element is CLS-compliant. The CLSCompliantAttribute class constructor is Public Sub New ByVal isCompliant As Boolean The isCompliant parameter indicates whether the program element is CLS-compliant. The CLSCompliantAttribute class has a single property Indicates whether the program element is CLS-compliant. The type is Boolean. See Chapter 3 for information on the CLS and on what it means for a program element to be CLS-compliant.

Info Reo DatabaseProgramming

Tue, 13 Dec 2011 15:13:44 GMT

SELECT ProductID, ProductName, SupplierID, CategoryID, QuantityPerUnit, UnitPrice, UnitsInStock, UnitsOnOrder, ReorderLevel, Discontinued FROM Products WHERE ProductID productId 5. Press Ctrl S to commit the stored procedure to the database. 6. To test the stored procedure, right-click on the code editor and select Run Stored Procedure. When prompted, enter 1 for the product ID 7. After pressing OK, the Output window should appear and the details of the product with a ProductID of 1 should be...

Using a StreamWriter to Save Control Values to a File EventProcedures

Tue, 13 Dec 2011 14:36:40 GMT

To get started with saving the Text values of controls, add two buttons to the form, called btnWriteControls and btnReadControls. Next, add a bunch of TextBoxes to the form. These will be used for writing and retrieving values. It really doesn't matter what they are called or what values they show initially, so you can accept the default names and values TextBox1, TextBox2, and so on . It also doesn't matter how many or few there are, because the StreamWriter object, using the code I'll show...

IDL Parameter Attributes .NET Interoperability

Tue, 13 Dec 2011 13:59:51 GMT

COM interface method parameters also take IDL attributes that are used to disambiguate how a given argument is to be marshaled across a given process boundary. You examine the exact details of IDL parameter attributes in greater detail in Chapter 4. For

Monitoring Performance Counters Web Based Clients

Tue, 13 Dec 2011 12:55:00 GMT

Once you create performance counter objects, you must provide data for these counters to be useful. First, you must add a PerformanceCounter object to your application. When developing a Windows Forms application, you can add a Performance-Counter object to a form using the Designer. However, when developing an ASP.NET Web form, you must add the PerformanceCounter object programmatically. The following code sample reads the ASP.NET Requests Queued performance counter and displays the value in...

Loading and Controlling Extensions DebuggingApplications

Tue, 13 Dec 2011 12:44:36 GMT

Before we start looking at individual extension commands, I need to talk about how you can see which extensions you've loaded, how to load your own, and how to get help from an extension. To see what extensions you have loaded, use the .chain List Debugger Extensions command. This command also shows you the search order for commands from the top of the display down to the bottom as well as the path that WinDBG searches for the extension DLLs. Under Windows 2000, the display looks like the...

Listing 81 DataGridView OnCellFormatting Method Override DataBinding

Tue, 13 Dec 2011 11:56:05 GMT

protected override void OnCellFormatting DataGridViewCellFormattingEventArgs args Call home to base base.OnCellFormatting args First row always displays if args.Rowlndex 0 return args.Value string.Empty args.FormattingApplied true private bool lsRepeatedCellValue int rowlndex, int collndex Rows rowlndex ,Cells collndex DataGridViewCell prevCell Rows rowlndex - 1 .Cells collndex if currCell.Value prevCell.Value currCell.Value null amp amp prevCell.Value null amp amp currCell.Value.ToString...

Initializing the SoapClient Object Sender 2

Tue, 13 Dec 2011 11:13:29 GMT

Initialization lets the SOAPClient read the Web Service's WSDL file so that it can create and parse the SOAP wrappers required to access the service. To initialize the SOAPClient, you specify the location of the Web Service by calling the soapClient.mssoapinit method. The method takes four arguments. The first required argument is the URL of the WSDL file for the Web Service you want to use. The other three arguments are optional and you may not know any of them immediately The public Web...

Understanding Leases .NET Remoting

Tue, 13 Dec 2011 10:11:07 GMT

A lease holds the time-to-live information for a given object. It is therefore directly associated with a certain MarshalByRefObject's instance. At the creation of a lease, the following information is set all of the following are of type TimeSpan The initial TTL after an object's creation. The grace time for a method call that is placed on the object. Mind, though, that these times are not additive for instance, calling a method a thousand times will not result in a TTL of 2,000 minutes, but...

MDI Layout VisualStudio

Tue, 13 Dec 2011 10:04:53 GMT

If you want to add the support for tiling and cascading windows, you'll probably also add these options to this menu. Every MDI container supports a LayoutMdi method that accepts a value from the MdiLayout enumeration, and arranges the windows automatically. For example, here's the code to tile windows horizontally in response to a menu click in the Parent form private void mnuTileH_Click object sender, System.EventArgs e Of course, it's just as easy to create your own custom layout logic....

Example 2210 Using PInvoke to call a Win32 API method NamespaceProgramming

Tue, 13 Dec 2011 09:54:12 GMT

using System.Runtime.InteropServices declare the WinAPI method you wish to P Invoke DllImport kernel32.dll, EntryPoint MoveFile, ExactSpelling false, CharSet CharSet.Unicode, SetLastError true static extern bool MoveFile string sourceFile, string destinationFile make an instance and run it Tester t new Tester string theDirectory c test media DirectoryInfo dir new DirectoryInfo theDirectory t.ExploreDirectory dir Set it running with a directory name private void ExploreDirectory DirectoryInfo...

Info Ddp DevelopmentTools

Tue, 13 Dec 2011 08:13:26 GMT

flag, and imageURL in this example . The content's unique ID ItemID in this example within the module. The ID of the user that created the content CreatedBy in this example . The date the content was made available to the search engine CreatedDate

Virtual Functions ManagedCode

Mon, 12 Dec 2011 21:50:08 GMT

Extending a base class with virtual functions can problems are in the nature of public inheritance for virtual functions leaves room for ambiguities. exists in C code cause even more problems. Some of these other problems exist because the C syntax The following code shows an ambiguity that If you see just this class declaration, you cannot say whether the function f is a virtual function or not. If Base defines or inherits a virtual function f with the same and signature as Derived f, then...

A Simple Glow Button VisualStudio

Mon, 12 Dec 2011 21:08:43 GMT

The first example you'll see demonstrates how easy it is to extend the AnimatedButtonBase class. The SimpleGlowButton creates a couple of drawing objects in its constructor, and simply overrides the four paint methods to paint a button with a different background color. Here's the complete code public class SimpleGlowButton AnimatedButtonBase private Pen penOutline private StringFormat textFormat In a more sophisticated details, these hard-coded details would be mapped to properties. penOutline...

Reviewing the Application Stored Procedures 2

Mon, 12 Dec 2011 20:43:42 GMT

In this exercise, you will review a complete solution to this lab so that you clearly understand how it works. This solution will show how the application loads data into the disconnected application. Then you will review a starter solution that will be the starting point for the application you will complete in the other exercises of Labs 6.1 and 6.2. Scenario The On The Road Windows application is used by Northwind Traders sales people to track customer orders while the user is on the road,...

Application Data CrystalReports

Mon, 12 Dec 2011 19:38:23 GMT

Most applications today are developed on an underlying database or other data source, and Crystal Reports .NET can use this application data as the source for your reports, as we saw in the last chapter. Probably the most compelling reason to use application data is that the logic from the application can be reused in your report. For example, if you have a data-bound grid that displays a number of orders together with calculated fields for order totals, sales tax, shipping, and so on, you...

Overview of XDR Schemas XMLProgramming

Mon, 12 Dec 2011 16:03:38 GMT

The example XML document data_dtd.xml used to demonstrate DTDs contains information about the modules in which a given class is articulated. The following listing shows the XDR schema that provides a full description of the class lt xml version 1.0 gt lt AttributeType name title dt type string gt lt AttributeType name company dt type string gt lt AttributeType name author dt type string gt lt AttributeType name total dt type int gt lt AttributeType name expandable dt type enumeration dt values...

Sharing session data Websphere

Mon, 12 Dec 2011 13:40:57 GMT

In this section, we explore the following mechanisms for sharing session data in a heterogeneous environment Messaging publish subscribe Once again, when reading this section, it is important to keep in mind that while the solutions can be implemented, one has to consider whether it is desirable to do so, since the alternative is often to eliminate interoperability issues altogether by carrying out a migration from one technology stack to the other. In this scenario, illustrated in Figure 9-10,...

Appendix A FiftyTwo Tips for ErrorFree Win32 API Access DataStructure

Mon, 12 Dec 2011 13:20:57 GMT

We all like the little bits of information that say a lot in a short space, especially when working with complex ideas or concepts. These tips are especially worthwhile because they often represent hours of work. They will help you create a better environment in which to access the Win32 API. Many of them are significant and show the hours of work required for discovery others are subtle suggestions exposed in a moment of clear thinking. A few of the tips simply consist of good-to-know...

ListView Visualization VisualStudio

Mon, 12 Dec 2011 09:51:19 GMT

One limitation of the ListView is that, like all Windows controls, it stores all its ListView items in memory. That means if you want to create a ListView that shows tens of thousands of data-heavy records, you're left with an unavoidable footprint in memory. In .NET 2.0, the ListView adds support for virtualization, which allows it to support large sets of data. With virtualization, the ListView loads only the data that's currently being displayed. As the user scrolls to a new place in the...

Class EmployeeSite Implements ISite ReflectionThreading

Mon, 12 Dec 2011 09:10:17 GMT

' A site object associates a container with a component Private mTheContainer As IContainer Private mTheComponent As IComponent ' A site object uses a unique site name for each component in a ' container. Because we're in the EmployeeSite class, we'll use the ' employee's ID as the site name. Private mEmpID As String ' Constructor, to associate a container with a component Public Sub New ByVal TheContainer As IContainer, _ ByVal TheComponent As IComponent mTheContainer TheContainer...

Using the XmlDataDocument Class XMLGuide

Mon, 12 Dec 2011 08:34:05 GMT

The XmlDataDocument class is an extension of the XmlDocument class, and more or less behaves the same way the XmlDocument does. The most fascinating feature of an XmlDataDocument object is that it provides two alternative views of the same data, the XML view and the relational view. The XmlDataDocument has a property named DataSet. It is through this property that XmlDataDocument exposes its data as one or more related or unrelated DataTables. A DataTable is actually an imaginary table view of...

Defining the Initial Class Type Visual Studio 2

Mon, 12 Dec 2011 08:20:34 GMT

Open the AutoLotDAL project in Visual Studio 2008, insert a new class type named InventoryDALDisLayer using the Project gt - Add New Item menu option, and ensure you have a public class type in your new code file, wrapped in a new namespace named AutoLotDisconnectedLayer. Unlike the connection-centric InventoryDAL type, this new class will not need to provide custom open close methods, as the data adapter will handle the details automatically. To begin, add a custom constructor that sets a...

The DataRow Error Programming Interface XMLProgramming

Mon, 12 Dec 2011 07:44:06 GMT

The tables in this section provide a quick overview of the properties and methods available in the DataRow class for setting and getting error messages. These messages are then tracked in the lt diffgr errors gt section of the DiffGram. Table 10-5 lists the error-related properties of the DataRow class. Table 10-5 Error-Related DataRow Properties Table 10-5 Error-Related DataRow Properties Indicates whether the row contains errors Gets or sets a custom error description for the row The...

Calling a Types Method FrameworkProgramming

Mon, 12 Dec 2011 07:15:29 GMT

The easiest way to call a method is to use Type's lnvokeMember method. This method is quite powerful in that it lets you do lots of stuff. There are several overloaded versions of lnvokeMember. I'll discuss the one that has the most parameters the other overloads simply pick defaults for certain parameters, making them easier to call. BindingFlags invokeAttr, How to look up members Binder binder, How to match members and arguments Object target, Object args, CultureInfo culture When you call...

How Web Forms Work ServerObjects

Mon, 12 Dec 2011 07:08:03 GMT

Web Forms live in the same realm as the HTML page. When you create an ASP.NET Web Form, you make it available for use by placing it within the directory structure of an IIS Web server. It's important to note that only an ASP.NET-aware Web server, such as IIS 5 running on Windows 2000, is capable of processing and serving ASP.NET applications. This is because, unlike HTML Web pages, an ASP.NET Web Form must be processed before the results can be sent to the requesting browser. You can think of...