CompareValidator.AddAttributesToRender Method (HtmlTextWriter)
.NET Framework (current version)
This API supports the product 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.
Assembly: System.Web (in System.Web.dll)
Parameters
- writer
-
Type:
System.Web.UI.HtmlTextWriter
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
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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. |
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.VB" %> <%@ Page language="VB" %> <!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 - VB.NET Example</title> </head> <body> <form id="Form1" method="post" runat="server"> <h3>Custom CompareValidator - AddAttributesToRender - C# Example</h3> <asp:TextBox id="TextBox1" runat="server">123</asp:TextBox><br /> <asp:TextBox id="TextBox2" runat="server">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>
Imports System.Web Imports System.Security.Permissions Namespace Samples.AspNet.VB.Controls <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _ Public NotInheritable Class CustomCompareValidatorAddAttributesToRender Inherits System.Web.UI.WebControls.CompareValidator Protected Overrides Sub AddAttributesToRender(ByVal writer As System.Web.UI.HtmlTextWriter) ' Show the CompareValidator's error message as bold. writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight, "bold") ' Call the Base's AddAttributesToRender method. MyBase.AddAttributesToRender(writer) End Sub End Class End Namespace
.NET Framework
Available since 1.1
Available since 1.1
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