TableCell.RenderContents(HtmlTextWriter) メソッド

定義

指定した TableCell オブジェクトに、HtmlTextWriter の内容を表示します。Renders the TableCell contents to the specified HtmlTextWriter object.

protected public:
 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 Friend Overrides Sub RenderContents (writer As HtmlTextWriter)

パラメーター

writer
HtmlTextWriter

クライアントに HTML のコンテンツを表示する出力ストリーム。The output stream that renders HTML content to the client.

次のコード例は、カスタムRenderContents TableCellコントロールのメソッドをオーバーライドして、カスタムテキストがセルの内容に挿入されるようにする方法を示しています。The following code example demonstrates how to override the RenderContents method in a custom TableCell control so that it custom text is inserted in the cell's contents.

<%@ 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

注釈

コントロールに子コントロールがある場合、または派生クラスでオーバーライドされたRenderContents場合、基本クラスのメソッドが呼び出されますText 。それ以外の場合HtmlTextWriterは、プロパティの値がオブジェクトに書き込まれます。 TableCellIf the TableCell control has child controls or is overridden in a derived class the base class's RenderContents method is called; otherwise, the value of the Text property is written to the HtmlTextWriter object.

このメソッドは、主にコントロールTableCellの機能を拡張するコントロールの開発者によって使用されます。 RenderContentsThe RenderContents method is used primarily by control developers extending the functionality of the TableCell control.

適用対象

こちらもご覧ください