NGRESS Figure 415 XmlNodeList Example
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...
Using the XmlDataDocument Class
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...
Figure 841 The webconfig File
lt add key ConnectionString User ID Admin Password gt lt add key XmlConfigFile gt lt appSettings gt Okay, now what exactly does that mean Your lt appSettings gt are custom settings you create and have access to in your application. We are creating two custom settings, which are added using the lt add gt tag.The key attribute is the name of the settings, and the value attribute is obviously the value. Here we are adding two keys, ConnectionString and XmlConfigFile. ConnectionString is what you...
Creating a New Permission Set
Suppose you decide that none of the seven built-in permissions sets satisfy your need for granting permissions.Therefore, you want to make a named permission set that does suit you.You have a few options Create a permission from scratch. Create a new permission set based on an existing one. Create a new permission from an XML-coded permission set. To get a better understanding of the working of the security policy and to get some hands-on experience with the tool, we discuss the different...
NGRESS Figure 414 XmlElement and XmlAttribute Example
namespace XmlAttributeElementProject XmlDocument myDoc new XmlDocument XmlElement myRoot myDoc.AppendChild myRoot XmlElement myElement myRoot.AppendChild myElement XmlAttribute myAttribute myAttribute.Value this is my attribute value this is my second attribute value Console.WriteLine myDoc.OuterXml Console.Write Press enter to finish Console.ReadLine The first step in the code is to create an XmlDocument and add a root element to it. Next, two additional XmlElements are created, subElement and...
Creating the User Functions
Registered Users Members get a special set of functions they can access, such as creating threads and posts, editing their profile, and editing the messages they've posted. A Guest that is, an unregistered user is limited to a very small set of functionalities specifically, viewing the threads and messages Figure 8.58 . The next step in building our application's user interface is to allow a registered user to modify his or her member profile. This includes first name, last name, password, and...
Converting Binary Data Using Base64
In the previous section, you learned how the client application accesses the database residing on the server for processing data, and also about the role of ADO.NET as a bridge between the client application and the server. The data retrieved from the server by the client application was in the simplest form, being just plain text accompanied by some integer values. In addition, while submitting data back to the server, the client application was not allowed to send arbitrary data such as...
Locating an Assembly
Once the assembly is created, finished, and deployed, its scope is basically private in other words, the assembly will not in any way, shape, or form interfere with any other assemblies, DLL files, or settings that are not declared in the assembly's manifest. It's all part of CLR's automation it used to be that only VB coders had protection from memory leaks or other types of problems by inadvertently creating a program that went too far out of its area, but now, the CLR handles all that. Now,...
Introduction Axb
XML is quickly becoming the universal protocol for transferring information from site to site via HTTP. Whereas the HTML will continue to be the language for displaying documents on the Internet, developers will start using the power of XML to transmit, exchange, and manipulate data using XML. XML offers a very simple solution to a complex problem. It offers a standard format for structuring data or information in a self-defined document format. This way, the data are kept independent of the...
Using XPathDocument and XPathNavigator Objects
In this section we will use the XPathDocument and XPathNavigator objects to load a list box from our Bank2.xml file as shown in Figure 6.24 .We will load a list box with the names of customers who are from Ohio. Figure 6.25 shows the output of this application. Figure 6.26 shows the complete code for this applica-tion.The code is also available in the XPathDocl.aspx file on the companion Solutions Web site for the book www.syngress.com solutions . Figure 6.25 Using the XPathDocument Object...
Using XPathDocument and XPathNavigator Objects for Document Navigation
This section will illustrate how to search an XPathDocument using a value of an attribute, and using a value of an element.We will use the Bank3.xml to illustrate these. Figure 6.27 shows a partial listing of the Bank3.xml.The complete code is available on the companion Solutions Web Site for the book www.syngress.com solutions . lt Account AccountNo A1112 gt lt Name gt Pepsi Beagle lt Name gt lt Balance gt 12 00.8 9 lt Balance gt lt State gt OH lt State gt lt Account gt The Account element of...
Generating an XML Document Using XmlTextWriter
In this section, we will collect user-given data via an .aspx page, and write the information in an XML file. Figure 6.5 shows the runtime view of the application. On the click event of the Create XML File, the application will create the XML file in the disk and display it back in the browser as shown in Figure 6.6. Figure 6.5 Output of XmlTextReader2.aspx Figure 6.5 Output of XmlTextReader2.aspx We have included the necessary code in the click event of the command button. Our objective is to...
Add Record Form
The form in Figure 9.12 allows you to add new records in the table.This form has two buttons, Save and Close, which handle the tasks of adding a new record and closing down the form, respectively.While entering the new record, ensure that the Employee Code field is not left blank. If it is and you click the Save button, a message will make an entry for the Employee Code field. A new record can be added only after entering a value for the Employee Code field.