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Panel.AddAttributesToRender(HtmlTextWriter) Methode

Definition

Fügt der Liste der darzustellenden Attribute Informationen über das Hintergrundbild, die Ausrichtung, den Umbruch und die Richtung hinzu.

protected:
 override void AddAttributesToRender(System::Web::UI::HtmlTextWriter ^ writer);
protected override void AddAttributesToRender (System.Web.UI.HtmlTextWriter writer);
override this.AddAttributesToRender : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub AddAttributesToRender (writer As HtmlTextWriter)

Parameter

writer
HtmlTextWriter

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

Ausnahmen

Die DefaultButton-Eigenschaft des Panel-Steuerelements muss die ID eines Steuerelements vom Typ IButtonControl sein.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie sie die AddAttributesToRender Methode in einem benutzerdefinierten Serversteuerelement außer Kraft setzen, damit der Panel Text immer fett formatiert angezeigt wird.

<%@ 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 Panel - AddAttributesToRender - C# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Panel - AddAttributesToRender - C# Example</h3>
            
            <aspSample:CustomPanelAddAttributesToRender 
              id="Panel1" 
              runat="server" 
              BorderWidth="1px" 
              BorderStyle="Solid">
          <asp:Label id="Label1" runat="server">Label1</asp:Label>
      </aspSample:CustomPanelAddAttributesToRender>

        </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 Panel - AddAttributesToRender - VB.NET Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Panel - AddAttributesToRender - VB.NET Example</h3>
            
            <aspSample:CustomPanelAddAttributesToRender id="Panel1" runat="server" 
             BorderWidth="1px" BorderStyle="Solid">
                    <asp:Label id="Label1" runat="server">Label1</asp:Label>
            </aspSample:CustomPanelAddAttributesToRender>
        </form>
    </body>
</html>
using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomPanelAddAttributesToRender : System.Web.UI.WebControls.Panel
  {
    protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
    {
      // Show the Panel text as Bold 
      writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight, "bold");

      // Call the Base's AddAttributesToRender method.
      base.AddAttributesToRender(writer);
    }
  }
}
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomPanelAddAttributesToRender
    Inherits System.Web.UI.WebControls.Panel

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

        ' Show the Panel text as Bold 
        writer.AddStyleAttribute(System.Web.UI.HtmlTextWriterStyle.FontWeight, "bold")

        ' Call the Base's AddAttributesToRender method.
        MyBase.AddAttributesToRender(writer)
    End Sub
End Class

Hinweise

Die AddAttributesToRender Methode wird hauptsächlich von Steuerelemententwicklern verwendet.

Gilt für