TextBox.OnPreRender Method

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.WebControls
Assembly: System.Web (in system.web.dll)

protected public:
virtual void OnPreRender (
	EventArgs^ e
) override
protected void OnPreRender (
	EventArgs e
)
protected internal override function OnPreRender (
	e : EventArgs
)
Not applicable.

Parameters

e

An EventArgs that contains the event data.

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.

Security noteSecurity Note:

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview (Visual Studio).

No code example is currently available or this language may not be supported.
<%@ 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 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>

No code example is currently available or this language may not be supported.
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 Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

Community Additions

ADD
Show: