TextBox.OnPreRender Method
.NET Framework 2.0
This method supports the .NET Framework infrastructure and is not intended to be used directly from your code.
Registers client script for generating postback events prior to rendering on the client, if AutoPostBack is true.
Namespace: System.Web.UI.WebControlsAssembly: System.Web (in system.web.dll)
The following code example demonstrates how to override the OnPreRender method so that it always displays a one-point border in a custom TextBox server control.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<HTML>
<HEAD>
<title>Custom TextBox - OnPreRender - VJ# Example</title>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom TextBox - OnPreRender - VJ# Example</h3>
<aspSample:CustomTextBoxOnPreRender
id="TextBox1"
runat="server"
text="Hello World!">
</aspSample:CustomTextBoxOnPreRender>
</form>
</body>
</HTML>
package Samples.AspNet.JSL.Controls;
public class CustomTextBoxOnPreRender
extends System.Web.UI.WebControls.TextBox
{
protected void OnPreRender(System.EventArgs e)
{
// Run the OnPreRender method on the base class.
super.OnPreRender(e);
// Display the TextBox with a 1 point border.
this.set_BorderWidth(System.Web.UI.WebControls.Unit.Point(1));
} //OnPreRender
} //CustomTextBoxOnPreRender
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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