TableCell.AddAttributesToRender(HtmlTextWriter) Metode
Definisi
Penting
Beberapa informasi terkait produk prarilis yang dapat diubah secara signifikan sebelum dirilis. Microsoft tidak memberikan jaminan, tersirat maupun tersurat, sehubungan dengan informasi yang diberikan di sini.
Menambahkan properti khusus untuk TableCell kontrol ke daftar atribut yang akan dirender.
protected:
override void AddAttributesToRender(System::Web::UI::HtmlTextWriter ^ writer);
protected override void AddAttributesToRender (System.Web.UI.HtmlTextWriter writer);
override this.AddAttributesToRender : System.Web.UI.HtmlTextWriter -> unit
Protected Overrides Sub AddAttributesToRender (writer As HtmlTextWriter)
Parameter
- writer
- HtmlTextWriter
Aliran output yang merender konten HTML ke klien.
Pengecualian
Sel yang tercantum sebagai sel header terkait tidak ditemukan.
Contoh
Contoh kode berikut menunjukkan cara mengambil AddAttributesToRender alih metode dalam kontrol server kustom sehingga atribut judul kustom dirender untuk setiap sel.
<%@ 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 - AddAttributesToRender - C# Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>Custom TableCell - AddAttributesToRender - C# Example</h3>
<asp:Table id="Table1" runat="server"
CellPadding="3" CellSpacing="2">
<asp:TableRow>
<aspSample:CustomTableCellAddAttributesToRender Text="(0,0)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(0,1)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(0,2)" />
</asp:TableRow>
<asp:TableRow>
<aspSample:CustomTableCellAddAttributesToRender Text="(1,0)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(1,1)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(1,2)" />
</asp:TableRow>
</asp:Table>
</div>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet.VB.Controls" Assembly="Samples.AspNet.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 - AddAttributesToRender - VB.NET Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h3>Custom TableCell - AddAttributesToRender - VB Example</h3>
<asp:Table id="Table1" runat="server"
CellPadding="3" CellSpacing="2">
<asp:TableRow>
<aspSample:CustomTableCellAddAttributesToRender Text="(0,0)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(0,1)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(0,2)" />
</asp:TableRow>
<asp:TableRow>
<aspSample:CustomTableCellAddAttributesToRender Text="(1,0)" />
<aspSample:CustomTableCellAddAttributesToRender Text="(1,1)" />
<aspSample:CustomTableCellAddAttributesToRender 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 CustomTableCellAddAttributesToRender : System.Web.UI.WebControls.TableCell
{
protected override void AddAttributesToRender(System.Web.UI.HtmlTextWriter writer)
{
// Write a Title attribute.
writer.AddAttribute("title", "CustomAddAttributesToRender");
// Call the base AddAttributesToRender method.
base.AddAttributesToRender(writer);
}
}
}
Imports System.Web
Imports System.Security.Permissions
Namespace Samples.AspNet.VB.Controls
<AspNetHostingPermission(SecurityAction.Demand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public NotInheritable Class CustomTableCellAddAttributesToRender
Inherits System.Web.UI.WebControls.TableCell
Protected Overrides Sub AddAttributesToRender(ByVal writer As System.Web.UI.HtmlTextWriter)
' Write a Title attribute.
writer.AddAttribute("title", "CustomAddAttributesToRender")
' Call the base AddAttributesToRender method.
MyBase.AddAttributesToRender(writer)
End Sub
End Class
End Namespace
Keterangan
Metode ini AddAttributesToRender mengambil alih metode kelas dasar dan pertama-tama AddAttributesToRender memanggil metode dasar dan kemudian menambahkan TableCell atribut yang sesuai dengan RowSpan properti , properti , ColumnSpan dan AssociatedHeaderCellID properti . AssociatedHeaderCellID Jika properti mengacu pada yang TableHeaderCell tidak dapat ditemukan, properti HttpException akan dilemparkan.
Metode AddAttributesToRender ini digunakan terutama oleh pengembang kontrol yang memperluas fungsionalitas TableCell kontrol.
Catatan Bagi Inheritor
Saat mengambil AddAttributesToRender(HtmlTextWriter) alih metode di kelas turunan, pastikan untuk memanggil AddAttributesToRender(HtmlTextWriter) metode kelas dasar sehingga TableCell atribut kontrol dirender dengan benar.