LinkButton.RenderContents(HtmlTextWriter) 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
将控件的内容呈现到指定的编写器中。
protected:
override void RenderContents(System::Web::UI::HtmlTextWriter ^ writer);protected public:
override void RenderContents(System::Web::UI::HtmlTextWriter ^ writer);protected override void RenderContents (System.Web.UI.HtmlTextWriter writer);protected internal override void RenderContents (System.Web.UI.HtmlTextWriter writer);override this.RenderContents : System.Web.UI.HtmlTextWriter -> unitProtected Overrides Sub RenderContents (writer As HtmlTextWriter)Protected Friend Overrides Sub RenderContents (writer As HtmlTextWriter)参数
- writer
- HtmlTextWriter
表示在客户端上呈现 HTML 内容的输出流的 HtmlTextWriter。
示例
下面的代码示例演示如何重写RenderContents自定义服务器控件中的 方法，以便将某些文本追加到 。LinkButton
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" 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 LinkButton - RenderContents - C# Example</title>
<script runat="server">
void LinkButton1_Command(Object sender, CommandEventArgs e)
{
// Redirect to the Microsoft home page.
Response.Redirect("http://www.microsoft.com/");
}
</script>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom LinkButton - RenderContents - C# Example</h3>
<aspSample:CustomLinkButtonRenderContents
id="LinkButton1"
runat="server"
OnCommand="LinkButton1_Command"
ToolTip="Microsoft Home">Microsoft Corp.
</aspSample:CustomLinkButtonRenderContents>
</form>
</body>
</html>
<%@ 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 LinkButton - RenderContents - VB.NET Example</title>
<script runat="server">
Sub LinkButton1_Command(sender As Object, e As CommandEventArgs)
' Redirect to the Microsoft home page.
Response.Redirect("http://www.microsoft.com/")
End Sub
</script>
</head>
<body>
<form id="Form1" method="post" runat="server">
<h3>Custom LinkButton - RenderContents - VB.NET Example</h3>
<aspSample:CustomLinkButtonRenderContents id="LinkButton1"
runat="server" OnCommand="LinkButton1_Command"
ToolTip="Microsoft Home">Microsoft Corp.</aspSample:CustomLinkButtonRenderContents>
</form>
</body>
</html>
using System.Web;
using System.Security.Permissions;
namespace Samples.AspNet.CS.Controls
{
[AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
public sealed class CustomLinkButtonRenderContents : System.Web.UI.WebControls.LinkButton
{
protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
{
// Call the base RenderContents method.
base.RenderContents(writer);
// Append some text to the LinkButton.
writer.Write(" Home Page");
}
}
}
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomLinkButtonRenderContents
Inherits System.Web.UI.WebControls.LinkButton
Protected Overrides Sub RenderContents(ByVal writer As System.Web.UI.HtmlTextWriter)
' Call the base RenderContents method.
MyBase.RenderContents(writer)
' Append some text to the LinkButton.
writer.Write(" Home Page")
End Sub
End Class
注解
此方法主要由控件开发人员使用。
