CompareValidator.AddAttributesToRender Method
.NET Framework 3.0
This method supports the .NET Framework infrastructure and is not intended to be used directly from your code.
Adds the attributes of this control to the output stream for rendering on the client.
Namespace: System.Web.UI.WebControlsAssembly: System.Web (in system.web.dll)
protected void AddAttributesToRender ( HtmlTextWriter writer )
protected override function AddAttributesToRender ( writer : HtmlTextWriter )
Not applicable.
Parameters
- writer
A System.Web.UI.HtmlTextWriter that contains the output stream for rendering on the client.
The following code example demonstrates how to override the AddAttributesToRender method in a custom server control so that the CompareValidator error message always appears in bold.
Security 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). |
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.JSL.Controls" Assembly="Samples.AspNet.JSL" %>
<%@ Page language="VJ#" %>
<!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 CompareValidator - AddAttributesToRender - VJ# Example</title>
<script runat="server">
void Page_Load(Object sender, EventArgs e)
{
// Run the Page Validate method in order to force
// the CompareValidate to show it's error message.
get_Page().Validate();
} //Page_Load
</script>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom CompareValidator - AddAttributesToRender - VJ# Example</h3>
<asp:TextBox id="TextBox1" runat="server" Text="123"></asp:TextBox><br />
<asp:TextBox id="TextBox2" runat="server" Text="456"></asp:TextBox>
<aspSample:CustomCompareValidatorAddAttributesToRender
id="CompareValidator1"
runat="server"
ErrorMessage="Value in TextBox2 does not match value in TextBox1."
Display="Dynamic"
ControlToCompare="TextBox2"
ControlToValidate="TextBox1" /><br />
<asp:Button id="Button1" runat="server" Text="Button" />
</form>
</body>
</html>
...
package Samples.AspNet.JSL.Controls;
public class CustomCompareValidatorAddAttributesToRender
extends System.Web.UI.WebControls.CompareValidator
{
protected void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
{
// Show the CompareValidator's error message as bold.
writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight,
"bold");
// Call the Base's AddAttributesToRender method.
super.AddAttributesToRender(writer);
} //AddAttributesToRender
} //CustomCompareValidatorAddAttributesToRender
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