HtmlInputButton.OnPreRender Method

Raises the OnPreRender event and registers client script for generating postback.

Namespace: System.Web.UI.HtmlControls
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 OnPreRender method overrides the Control.OnPreRender method. OnPreRender is used primarily by control developers.

The following code example demonstrates how to override the OnPreRender method so that it always displays a custom HtmlInputButton control with bold text.

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 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">&nbsp;&nbsp;

      <div id="Div1" runat="server"
        style="DISPLAY: inline; WIDTH: 256px; HEIGHT: 15px" />
    </form>
  </body>
</html>

No code example is currently available or this language may not be supported.
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 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

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