HtmlTextArea.RenderAttributes Method (HtmlTextWriter)
.NET Framework (current version)
Renders the HtmlTextArea control's attributes to the specified HtmlTextWriter object.
Assembly: System.Web (in System.Web.dll)
Parameters
- writer
-
Type:
System.Web.UI.HtmlTextWriter
The HtmlTextWriter that receives the rendered content.
The RenderAttributes method renders the name attribute of the HtmlTextArea control directly to ensure that it has the same value as the Control.UniqueID property. After rendering the attribute, the RenderAttributes method calls the base class's RenderAttributes method.
The RenderAttributes method is used primarily by control developers extending the functionality of the HtmlTextArea control.
The following code example demonstrates how to override the RenderAttributes method in a custom server control so that specific title text is always displayed for the HtmlTextArea control.
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %> <%@ Page Language="VB" AutoEventWireup="True" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <script runat="server"> Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) HtmlTextArea1.Value = "Hello HTML Text Area World." End Sub </script> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>Custom HtmlTextArea RenderAttributes Example</title> </head> <body> <form id="Form1" method="post" runat="server"> <h3>Custom HtmlTextArea RenderAttributes Example</h3> <aspSample:CustomHtmlTextAreaRenderAttributes id="HtmlTextArea1" name="HtmlTextArea1" runat="server" rows="4" cols="50" /> </form> </body> </html>
Imports System.Web Imports System.Security.Permissions Namespace Samples.AspNet.VB.Controls <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _ Public NotInheritable Class CustomHtmlTextAreaRenderAttributes Inherits System.Web.UI.HtmlControls.HtmlTextArea Protected Overrides Sub RenderAttributes(ByVal writer As System.Web.UI.HtmlTextWriter) ' Write out the Title attribute. writer.Write(" Title=""Text from RenderAttributes.""") ' Call the base class's RenderAttributes method. MyBase.RenderAttributes(writer) End Sub End Class End Namespace
.NET Framework
Available since 1.1
Available since 1.1
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