次の方法で共有


Button.RenderContents(HtmlTextWriter) メソッド

定義

コントロールの内容を指定したライターに出力します。

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)

パラメーター

writer
HtmlTextWriter

HTML コンテンツをクライアントに表示する出力ストリームを表す HtmlTextWriter オブジェクト。

次のコード例では、カスタム サーバー コントロールのメソッドを RenderContents オーバーライドして、カスタム サーバー コントロールの後に常にテキストを表示する方法を Button 示します。

<%@ 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

適用対象

こちらもご覧ください