Button.RenderContents(HtmlTextWriter) Methode

  • Referenz

Definition

Namespace:
System.Web.UI.WebControls
Assembly:
System.Web.dll

Rendert den Inhalt des Steuerelements im angegebenen Writer.

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)

Parameter

writer
HtmlTextWriter

Ein HtmlTextWriter-Objekt, das den Ausgabestream für das Rendering von HTML-Inhalten auf dem Client darstellt.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie Sie die RenderContents Methode in einem benutzerdefinierten Serversteuerelement außer Kraft setzen, sodass text immer nach einem benutzerdefinierten Button Serversteuerelement angezeigt wird.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.CS.Controls" Assembly="Samples.AspNet.CS" %>
<%@ Page language="c#" %>
<!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 Button - RenderContents - C# Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Button - RenderContents - C# Example</h3>

      <aspSample:CustomButtonRenderContents
        id="Button1"
        runat="server"
        Text="Button" />

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

<%@ 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 Button - RenderContents - VB.NET Example</title>
  </head>
  <body>
    <form id="Form1" method="post" runat="server">
      <h3>Custom Button - RenderContents - VB.NET Example</h3>
      <aspSample:CustomButtonRenderContents id="Button1" runat="server" Text="Button" />
    </form>
  </body>
</html>

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

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

      // Append some text after the button.
      writer.Write("<br>Click this button for more information.");
    }
  }
}

Imports System.Web
Imports System.Security.Permissions

Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
    Public NotInheritable Class CustomButtonRenderContents
        Inherits System.Web.UI.WebControls.Button

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

            ' Append some text after the button.
            writer.Write("<br>Click this button for more information.")
        End Sub
    End Class
End Namespace

Gilt für

Siehe auch