TableCell.RenderContents(HtmlTextWriter) 方法

  • 參考

定義

命名空間:
System.Web.UI.WebControls
組件:
System.Web.dll

呈現 TableCell 內容給指定的 HtmlTextWriter 物件。

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)

參數

writer
HtmlTextWriter

將 HTML 內容呈現給用戶端的輸出資料流。

範例

下列程式碼範例示範如何在自訂 TableCell 控制項中覆寫 RenderContents 方法，使其自訂文字插入儲存格的內容中。

<%@ 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

備註

TableCell如果控制項具有子控制項，或是在衍生類別中覆寫，則會呼叫基類的 RenderContents 方法;否則，屬性的值 Text 會寫入 HtmlTextWriter 物件。

方法 RenderContents 主要是由控制項開發人員用來擴充控制項的功能 TableCell 。

適用於

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