HtmlButton.RenderAttributes Method (HtmlTextWriter)
.NET Framework (current version)
Renders the HtmlButton 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 contains the output stream to render on the client.
The RenderAttributes method writes the onclick attribute of the rendered HtmlButton control, and then calls the base HtmlControl.RenderAttributes method.
The RenderAttributes method is used primarily by control developers extending the functionality of the HtmlButton control.
The following code example demonstrates how to override the RenderAttributes method in a custom server control so that a title is always displayed for the HtmlButton 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"> <html xmlns="http://www.w3.org/1999/xhtml" > <head> <title>Custom HtmlButton - RenderAttributes - Visual Basic Example</title> <script runat="server"> Sub Page_Load(sender As Object, e As EventArgs) HtmlButton1.Attributes.Add("onclick", "alert('Hello client-side world.');") End Sub Sub HtmlButton1_ServerClick(sender As Object, e As EventArgs) Div1.InnerHtml = "Hello server-side world." End Sub </script> </head> <body> <form id="Form1" method="post" runat="server"> <h3>Custom HtmlButton - RenderAttributes - Visual Basic Example</h3> <aspSample:CustomHtmlButtonRenderAttributes id="HtmlButton1" runat="server" type="button" onserverclick="HtmlButton1_ServerClick" name="HtmlButton1">Html Button</aspSample:CustomHtmlButtonRenderAttributes> <div id="Div1" runat="server" style="DISPLAY: inline; WIDTH: 256px; HEIGHT: 15px" /> </form> </body> </html>
Imports System.Web Imports System.Security.Permissions Namespace Samples.AspNet.VB.Controls <AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _ Public NotInheritable Class CustomHtmlButtonRenderAttributes Inherits System.Web.UI.HtmlControls.HtmlButton Protected Overrides Sub RenderAttributes(ByVal writer As System.Web.UI.HtmlTextWriter) ' Call the base class's RenderAttributes method. MyBase.RenderAttributes(writer) ' Write out the HtmlButton control's Title tag. writer.Write(" Title=""Text from RenderAttributes.""") End Sub End Class End Namespace
.NET Framework
Available since 1.1
Available since 1.1
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