HtmlTable.RenderChildren(HtmlTextWriter) Metode

Definisi

Ruang nama:
System.Web.UI.HtmlControls
Rakitan:
System.Web.dll

Merender HtmlTable kontrol turunan kontrol ke objek yang ditentukan HtmlTextWriter .

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

Parameter

writer
HtmlTextWriter

HtmlTextWriter yang menerima konten yang dirender.

Contoh

Contoh kode berikut menunjukkan cara mengambil alih RenderChildren metode dalam kontrol server kustom sehingga baris tabel baru ditambahkan ke HtmlTable kontrol.

<%@ 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 HtmlTable - RenderChildren Example</title>
    </head>
    <body>
        <form id="Form1" 
          method="post" 
          runat="server">
            <h3>Custom HtmlTable - RenderChildren Example</h3>
      
      <aspSample:CustomHtmlTableRenderChildren 
        id="HtmlTable1" 
        name="HtmlTable1" 
        runat="server" 
        border="1"
        cellSpacing="0" 
        cellPadding="5">
        <tr>
          <td>1,1</td>
          <td>1,2</td>
          <td>1,3</td>
        </tr>
        <tr>
          <td>2,1</td>
          <td>2,2</td>
          <td>2,3</td>
        </tr>
        <tr>
          <td>3,1</td>
          <td>3,2</td>
          <td>3,3</td>
        </tr>
      </aspSample:CustomHtmlTableRenderChildren>

        </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 HtmlTable - RenderChildren Example</title>
    </head>
    <body>
        <form id="Form1" 
          method="post" 
          runat="server">
            <h3>Custom HtmlTable - RenderChildren Example</h3>
      
      <aspSample:CustomHtmlTableRenderChildren 
        id="HtmlTable1" 
        name="HtmlTable1" 
        runat="server" 
        border="1"
        cellSpacing="0" 
        cellPadding="5">
        <tr>
          <td>1,1</td>
          <td>1,2</td>
          <td>1,3</td>
        </tr>
        <tr>
          <td>2,1</td>
          <td>2,2</td>
          <td>2,3</td>
        </tr>
        <tr>
          <td>3,1</td>
          <td>3,2</td>
          <td>3,3</td>
        </tr>
      </aspSample:CustomHtmlTableRenderChildren>

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

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

namespace Samples.AspNet.CS.Controls
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomHtmlTableRenderChildren : System.Web.UI.HtmlControls.HtmlTable
    {
        protected override void RenderChildren(System.Web.UI.HtmlTextWriter writer)
        {
            // Call the base class's RenderChildren method.
            base.RenderChildren(writer);
            
            // Write out a new table row.
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Tr);
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Td);
            writer.Write("4,1");
            writer.RenderEndTag();
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Td);
            writer.Write("4,2");
            writer.RenderEndTag();
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Td);
            writer.Write("4,3");
            writer.RenderEndTag();
            writer.RenderEndTag();
        }
    }
}

Imports System.Web
Imports System.Security.Permissions

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

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

            ' Call the base class's RenderChildren method.
            MyBase.RenderChildren(writer)

            ' Write out a new table row.
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Tr)
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Td)
            writer.Write("4,1")
            writer.RenderEndTag()
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Td)
            writer.Write("4,2")
            writer.RenderEndTag()
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Td)
            writer.Write("4,3")
            writer.RenderEndTag()
            writer.RenderEndTag()
        End Sub
    End Class
End Namespace

Keterangan

Metode ini RenderChildren menyediakan pemformatan tambahan sebelum dan sesudah memanggil metode kelas Control.RenderChildren dasar. Pemformatan tambahan membuat HTML kontrol yang HtmlTable dirender lebih mudah dibaca dengan menyisipkan pengembalian baris dan inden sebelum merender kontrol turunan HtmlTable kontrol.

Metode RenderChildren ini digunakan terutama oleh pengembang kontrol yang memperluas fungsionalitas HtmlTable kontrol.

Berlaku untuk

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