HtmlTextArea.OnPreRender Method

Raises the PreRender event.

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 object that contains the event data.

The OnPreRender method notifies the HtmlTextArea control to perform any necessary steps prior to saving the view state and rendering content.

The OnPreRender method is used primarily by control developers extending the functionality of the HtmlTextArea control.

Notes to Inheritors: When overriding the OnPreRender method in a derived class, be sure to call the base class's OnPreRender method so that the HtmlTextArea control is properly registered with the page.

The following code example demonstrates how to override the OnPreRender method to always display 5 rows and 75 columns in a custom HtmlTextArea server control.

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 HtmlTextArea - OnPreRender - VJ# Example</title>
    <script runat="server">
    void Page_Load(Object sender, EventArgs e) 
    {
        HtmlTextArea1.set_Value("Hello Html Text Area World.");
    } //Page_Load
    </script>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom HtmlTextArea - OnPreRender - VJ# Example</h3>

      <aspSample:CustomHtmlTextAreaOnPreRender 
        id="HtmlTextArea1" 
        name="HtmlTextArea1" 
        runat="server" 
        rows="4" 
        cols="50" />
        
        </form>
    </body>
</html>

No code example is currently available or this language may not be supported.
package Samples.AspNet.JSL.Controls;

public class CustomHtmlTextAreaOnPreRender
    extends System.Web.UI.HtmlControls.HtmlTextArea
{
    protected void OnPreRender(System.EventArgs e)
    {
        // Call the base's OnPreRender method.
        super.OnPreRender(e);
        // Always display this control with 5 rows and 75 columns
        this.set_Rows(5);
        this.set_Cols(75);
    } //OnPreRender
} //CustomHtmlTextAreaOnPreRender

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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