LinkButton.OnPreRender Method
.NET Framework 3.0
Raises the PreRender event.
Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
The OnPreRender method notifies the LinkButton control to perform any necessary prerendering steps prior to saving view state and rendering content to the client.
The following code example demonstrates how to override the OnPreRender method so that a border is never displayed in a custom LinkButton control.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Custom LinkButton - OnPreRender - VJ# Example</title>
<script runat="server">
void LinkButton1_Command(Object sender, CommandEventArgs e)
{
// Redirect to the Microsoft home page.
get_Response().Redirect("http://www.microsoft.com/");
} //LinkButton1_Command
</script>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom LinkButton - OnPreRender - VJ# Example</h3>
<aspSample:CustomLinkButtonOnPreRender
id="LinkButton1"
runat="server"
OnCommand="LinkButton1_Command"
ToolTip="Microsoft Home">Microsoft Corp.
</aspSample:CustomLinkButtonOnPreRender>
</form>
</body>
</html>
...
package Samples.AspNet.JSL.Controls;
public class CustomLinkButtonOnPreRender
extends System.Web.UI.WebControls.LinkButton
{
protected void OnPreRender(System.EventArgs e)
{
// Run the OnPreRender method on the base class.
super.OnPreRender(e);
// Always display the LinkButton without a border.
this.set_BorderWidth(System.Web.UI.WebControls.Unit.Point(0));
} //OnPreRender
} //CustomLinkButtonOnPreRender
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