HtmlInputButton.OnPreRender Method
.NET Framework 2.0
Raises the OnPreRender event and registers client script for generating postback.
Namespace: System.Web.UI.HtmlControls
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
The following code example demonstrates how to override the OnPreRender method so that it always displays a custom HtmlInputButton control with bold text.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<HTML>
<HEAD>
<title>Custom HtmlInputButton - OnPreRender - VJ# Example</title>
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
HtmlInputButton1.get_Attributes().Add("onclick",
"alert('Hello client-side world.');");
} //Page_Load
void HtmlInputButton1_ServerClick(Object sender, EventArgs e)
{
Div1.set_InnerHtml("Hello server-side world.");
} //HtmlInputButton1_ServerClick
</script>
</HEAD>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom HtmlInputButton - OnPreRender - VJ# Example</h3>
<aspSample:CustomHtmlInputButtonOnPreRender
id="HtmlInputButton1"
runat="server"
type="button"
onserverclick="HtmlInputButton1_ServerClick"
value="Html Input Button"
name="HtmlInputButton1">
<DIV id="Div1" runat="server"
style="DISPLAY: inline; WIDTH: 256px; HEIGHT: 15px"
ms_positioning="FlowLayout" />
</form>
</body>
</HTML>
package Samples.AspNet.JSL.Controls;
public class CustomHtmlInputButtonOnPreRender
extends System.Web.UI.HtmlControls.HtmlInputButton
{
protected void OnPreRender(System.EventArgs e)
{
// Call the base OnPreRender method.
super.OnPreRender(e);
// Always display the HtmlButton with bold text.
this.get_Style().Add("font-weight", "bold");
} //OnPreRender
} //CustomHtmlInputButtonOnPreRender
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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