HyperLink.RenderContents(HtmlTextWriter) 方法

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

在页上显示 HyperLink 控件。

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 -> unit
Protected Overrides Sub RenderContents (writer As HtmlTextWriter)
Protected Friend Overrides Sub RenderContents (writer As HtmlTextWriter)

参数

writer
HtmlTextWriter

要在客户端呈现的输出流。

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，以便将一些文本追加到控件中 HyperLink 。

<%@ 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 HyperLink - RenderContents - C# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom HyperLink - RenderContents - C# Example</h3>
            
            <aspSample:CustomHyperLinkRenderContents 
              id="HyperLink1" runat="server" Target="_blank"
              NavigateUrl="http://www.microsoft.com/"  
              ToolTip="Microsoft Web Site">www.microsoft.com
            </aspSample:CustomHyperLinkRenderContents>

        </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 HyperLink - RenderContents - VB.NET Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom HyperLink - RenderContents - VB.NET Example</h3>
            
            <aspSample:CustomHyperLinkRenderContents 
             id="HyperLink1" runat="server" Target="_blank"
             NavigateUrl="http://www.microsoft.com/"  
             ToolTip="Microsoft Web Site">www.microsoft.com
            </aspSample:CustomHyperLinkRenderContents>

        </form>
    </body>
</html>

using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomHyperLinkRenderContents : System.Web.UI.WebControls.HyperLink
  {
    protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
    {
      // Call the base RenderContents method.
      base.RenderContents(writer);

      // Append some text to the HyperLink.
      writer.Write(" Home Page");
    }
  }
}

<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomHyperLinkRenderContents
    Inherits System.Web.UI.WebControls.HyperLink

    Protected Overrides Sub RenderContents(ByVal writer As System.Web.UI.HtmlTextWriter)

        ' Call the base RenderContents method.
        MyBase.RenderContents(writer)

        ' Append some text to the HyperLink.
        writer.Write(" Home Page")
    End Sub
End Class

适用于

另请参阅