Button.Click Event
.NET Framework 2.0
Occurs when the Button control is clicked.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
The Click event is raised when the Button control is clicked. This event is commonly used when no command name is associated with the Button control (for instance, with a Submit button).
For more information about handling events, see Consuming Events.
| Topic | Location |
|---|---|
| How to: Connect Multiple Events to a Single Event Handler in ASP.NET Web Pages | Building ASP .NET Web Applications |
| How to: Implement Simple Forms Authentication | Building ASP .NET Web Applications |
| How to: Connect Multiple Events to a Single Event Handler in ASP.NET Web Pages | Building ASP .NET Web Applications |
| How to: Implement Simple Forms Authentication | Building ASP .NET Web Applications |
| Walkthrough: Validating User Input in a Web Forms Page | Building ASP .NET Web Applications in Visual Studio |
| Walkthrough: Creating a Basic Web Page with Code Separation in Visual Web Developer | Building ASP .NET Web Applications in Visual Studio |
The following code example demonstrates how to specify and code an event handler for the Click event in order to display a message on the Web page when the Button control is clicked.
<%@ Page Language="C#" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> void Page_Load(Object sender, EventArgs e) { // Manually register the event-handling method for // the Click event of the Button control. Button1.Click += new EventHandler(this.GreetingBtn_Click); } void GreetingBtn_Click(Object sender, EventArgs e) { // When the button is clicked, // change the button text, and disable it. Button clickedButton = (Button)sender; clickedButton.Text = "...button clicked..."; clickedButton.Enabled = false; // Display the greeting label text. GreetingLabel.Visible = true; } </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Untitled Page</title> </head> <body> <form id="form1" runat="server"> <div> <h3>Simple Button Example</h3> <asp:Button id="Button1" Text="Click here for greeting..." OnClick="GreetingBtn_Click" runat="server"/> <br /> <br /> <asp:Label ID="GreetingLabel" runat="server" Visible=false Text="Hello World!" /> </div> </form> </body> </html>
Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.
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