TableCell.RenderContents(HtmlTextWriter) Methode

  • Referenz

Definition

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

Gibt die Inhalte der TableCell in das angegebene HtmlTextWriter-Objekt wieder.

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

Der Ausgabestream, der HTML-Inhalt für den Client rendert.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die RenderContents Methode in einem benutzerdefinierten TableCell Steuerelement überschrieben wird, sodass benutzerdefinierter Text in den Inhalt der Zelle eingefügt wird.

<%@ Page Language="C#" %>
<%@ Register TagPrefix="aspSample" 
    Namespace="Samples.AspNet.CS.Controls" 
    Assembly="Samples.AspNet.CS" %>
<!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 id="Head2" runat="server">
    <title>Custom TableCell - RenderContents - C# Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom TableCell - RenderContents - C# Example</h3>

    <asp:Table id="Table1" runat="server" CellPadding="3" CellSpacing="2">
      <asp:TableRow>
        <aspSample:CustomTableCellRenderContents Text="(0,0)" />
        <aspSample:CustomTableCellRenderContents Text="(0,1)" />
        <aspSample:CustomTableCellRenderContents Text="(0,2)" />
      </asp:TableRow>
      <asp:TableRow>
        <aspSample:CustomTableCellRenderContents Text="(1,0)" />
        <aspSample:CustomTableCellRenderContents Text="(1,1)" />
        <aspSample:CustomTableCellRenderContents Text="(1,2)" />
      </asp:TableRow>
    </asp:Table>

    </div>
    </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 id="Head2" runat="server">
    <title>Custom TableCell - RenderContents - VB.NET Example</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

    <h3>Custom TableCell - RenderContents - VB.NET Example</h3>

    <asp:Table id="Table1" runat="server" CellPadding="3" CellSpacing="2">
      <asp:TableRow>
        <aspSample:CustomTableCellRenderContents Text="(0,0)" />
        <aspSample:CustomTableCellRenderContents Text="(0,1)" />
        <aspSample:CustomTableCellRenderContents Text="(0,2)" />
      </asp:TableRow>
      <asp:TableRow>
        <aspSample:CustomTableCellRenderContents Text="(1,0)" />
        <aspSample:CustomTableCellRenderContents Text="(1,1)" />
        <aspSample:CustomTableCellRenderContents Text="(1,2)" />
      </asp:TableRow>
    </asp:Table>

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

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

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomTableCellRenderContents : System.Web.UI.WebControls.TableCell
  {
    protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
    {
      // Insert text into each TableCell.
      writer.Write("TableCell: ");

      // Call the base RenderContents method.
      base.RenderContents(writer);
    }
  }
}

Imports System.Web
Imports System.Security.Permissions

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

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

            ' Insert text into each TableCell.
            writer.Write("TableCell: ")

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

        End Sub

    End Class

End Namespace

Hinweise

Wenn das TableCell Steuerelement über untergeordnete Steuerelemente verfügt oder in einer abgeleiteten Klasse überschrieben wird, wird die -Methode der Basisklasse RenderContents aufgerufen. Andernfalls wird der Wert der Text -Eigenschaft in das HtmlTextWriter -Objekt geschrieben.

Die RenderContents -Methode wird in erster Linie von Steuerelemententwicklern verwendet, die die Funktionalität des Steuerelements TableCell erweitern.

Gilt für:

Weitere Informationen