Table.RenderContents(HtmlTextWriter) Method

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Renders the rows in the table control to the specified writer.

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)

Parameters

writer: HtmlTextWriter

An HtmlTextWriter that represents the output stream to render HTML content on the client.

Exceptions

HttpException

The table sections are not in order.

Examples

The following code example demonstrates how to override the RenderContents method in a custom server control so that it always inserts a header row for a custom Table server control.

ASP.NET (C#)

<%@ 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 Table - RenderContents - C# Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Table - RenderContents - C# Example</h3>
            
            <aspSample:CustomTableRenderContents 
              id="Table1" 
              runat="server" 
              GridLines="Both">
        <asp:TableRow>
          <asp:TableCell>Row 0, Col 0</asp:TableCell>
          <asp:TableCell>Row 0, Col 1</asp:TableCell>
        </asp:TableRow>
        <asp:TableRow>
          <asp:TableCell>Row 1, Col 0</asp:TableCell>
          <asp:TableCell>Row 1, Col 1</asp:TableCell>
        </asp:TableRow>
      </aspSample:CustomTableRenderContents>
        
        </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 Table - RenderContents - VB.NET Example</title>
    </head>
    <body>
        <form id="Form1" method="post" runat="server">
            <h3>Custom Table - RenderContents - VB.NET Example</h3>

            <aspSample:CustomTableRenderContents id="Table1" runat="server" GridLines="Both">
                <asp:TableRow>
                    <asp:TableCell>Row 0, Col 0</asp:TableCell>
                    <asp:TableCell>Row 0, Col 1</asp:TableCell>
                </asp:TableRow>
                <asp:TableRow>
                    <asp:TableCell>Row 1, Col 0</asp:TableCell>
                    <asp:TableCell>Row 1, Col 1</asp:TableCell>
                </asp:TableRow>
            </aspSample:CustomTableRenderContents>
        </form>
    </body>
</html>

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

namespace Samples.AspNet.CS.Controls
{
  [AspNetHostingPermission(SecurityAction.Demand, Level=AspNetHostingPermissionLevel.Minimal)]
  public sealed class CustomTableRenderContents : System.Web.UI.WebControls.Table
  {
    protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
    {
      // Insert a header row.
      writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Tr);
      writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Th);
      writer.Write("Col 0");
      writer.RenderEndTag();
      writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Th);
      writer.Write("Col 1");
      writer.RenderEndTag();
      writer.RenderEndTag();

      // 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 CustomTableRenderContents
        Inherits System.Web.UI.WebControls.Table

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

            ' Insert a header row.
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Tr)
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Th)
            writer.Write("Col 0")
            writer.RenderEndTag()
            writer.RenderBeginTag(System.Web.UI.HtmlTextWriterTag.Th)
            writer.Write("Col 1")
            writer.RenderEndTag()
            writer.RenderEndTag()

            ' Call the base RenderContents method.
            MyBase.RenderContents(writer)
        End Sub
    End Class
End Namespace

Remarks

This method is used primarily by control developers when deriving a custom class from a Table control.

The Table control implements the RenderContents to render the Rows of the table.

Applies to

Produkt	Verzie
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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