Web Forms

Working with Forms

Well, now let's start working with ASP.NET. This site works with ASP.NET using VB. To open a new ASP.NET Web application, open Visual Studio .NET and from the main menu select File->New Project. From the New Project dialogue click on Visual Basic Projects under project types and ASP.NET Web Application under templates. It looks like the image below.

The page that opens looks like the image below.

The page is opened in grid layout mode. To change it to flow layout mode you need to set the pageLayout property to flow layout in the properties window. To view the properties window for the page select
View-> Properties Window from main menu or hold F4 key on your keyboard.

Your First ASP.NET Program

On to the Web Form drag a Label and a Button from the toolbox. Double-click the button to open it's event. Write the following code in the click event of the button.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As _ System.EventArgs) Handles Button1.Click Label1.Text = "Welcome to ASP.NET" End Sub

The above said code displays "Welcome to ASP.NET" on a label web server control. You can run the sample at the bottom of this page. As mentioned before, working with ASP.NET using VB is like working with VB itself. Everything you do here is what you do with a VB Windows application.

Initializing a Web Form

We use the Page_Load event to initialize a Web Form. The code you place in this event is executed first and all the code you write performs some function on the page when it is loaded. The Page_Load event looks like this in code:

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)_ Handles MyBase.Load 'Put user code to initialize the page here End Sub

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Live Code Demo

Label