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DataList.RenderContents Method

Renders the list items in the DataList control.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

protected internal override void RenderContents (
	HtmlTextWriter writer
)
protected void RenderContents (
	HtmlTextWriter writer
)
protected internal override function RenderContents (
	writer : HtmlTextWriter
)

Parameters

writer

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

The RenderContents method is used primarily by control developers, when deriving a custom control from the DataList control.

The RenderContents method renders the inner content of the DataList control, including the contained DataListItem controls.

The following code example demonstrates how to override the RenderContents method in a custom server control so that some text precedes the DataList object.

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet" Assembly="Samples.AspNet.CS" %>
<%@ Page Language="C#" AutoEventWireup="True" %>
<HTML>
	<HEAD>
		<title>Custom DataList - RenderContents - C# Example</title>
		<script runat=server>
		  private void Page_Load(object sender, System.EventArgs e)
		  {
        // Create sample data for the DataList control.
        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.Columns.Add(new System.Data.DataColumn("Column1", typeof(String)));
        
        dr = dt.NewRow();
        dr[0] = "Hello";
        dt.Rows.Add(dr);
        
        dr = dt.NewRow();
        dr[0] = "DataList";
        dt.Rows.Add(dr);
        
        dr = dt.NewRow();
        dr[0] = "World";
        dt.Rows.Add(dr);

        // Show the DataTable values in the DataList.
			  DataList1.DataSource = dt;
        DataList1.DataBind();
		}		
		</script>
	</HEAD>
	<body>
		<form id="Form1" method="post" runat="server">
			<h3>Custom DataList - RenderContents - C# Example</h3>

			<aspSample:CustomDataListRenderContents id="DataList1" runat="server" 
			    BorderColor="#999999" BorderStyle="None" BackColor="White" CellPadding="3" 
			    GridLines="Vertical" BorderWidth="1px" Width="100px">
		
          <HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#000084" />
          <HeaderTemplate>
              <asp:Label id="Label1" runat="server">Column1</asp:Label>
          </HeaderTemplate>

          <ItemStyle ForeColor="Black" BackColor="#EEEEEE" />
          <ItemTemplate>
              <asp:Label id="Label2" runat="server"><%# DataBinder.Eval(Container.DataItem, "Column1") %></asp:Label>
          </ItemTemplate>

          <AlternatingItemStyle BackColor="#DCDCDC" />
          <AlternatingItemTemplate>
              <asp:Label id="Label3" runat="server"><%# DataBinder.Eval(Container.DataItem, "Column1") %></asp:Label>
          </AlternatingItemTemplate>
          
      </aspSample:CustomDataListRenderContents>
		</form>
	</body>
</HTML>
...using System.Web;
using System.Security.Permissions;

namespace Samples.AspNet
{
    [AspNetHostingPermission(SecurityAction.Demand, Level = AspNetHostingPermissionLevel.Minimal)]
    public sealed class CustomDataListRenderContents : System.Web.UI.WebControls.DataList
    {
        protected override void RenderContents(System.Web.UI.HtmlTextWriter writer)
        {
            // Place some text before the DataList.
            writer.Write("Here is some text from the RenderContent method.<br>");

            // Call the base RenderContents method.
            base.RenderContents(writer);
        }
    }
}

<%@ Register TagPrefix="aspSample" Namespace="Samples.AspNet" Assembly="Samples.AspNet.JSL" %>
<%@ Page Language="VJ#" AutoEventWireup="True" %>
<HTML>
	<HEAD>
		<title>Custom DataList - RenderContents - VJ# Example</title>
		<script runat=server>
		    
    private void Page_Load(Object sender, System.EventArgs e)
    {
        // Create sample data for the DataList control.
        System.Data.DataTable dt = new System.Data.DataTable();
        System.Data.DataRow dr;
        dt.get_Columns().Add(new System.Data.DataColumn("Column1",
            String.class.ToType()));

        dr = dt.NewRow();
        dr.set_Item(0, "Hello");
        dt.get_Rows().Add(dr);

        dr = dt.NewRow();
        dr.set_Item(0, "DataList");
        dt.get_Rows().Add(dr);

        dr = dt.NewRow();
        dr.set_Item(0, "World");
        dt.get_Rows().Add(dr);

        // Show the DataTable values in the DataList.
        DataList1.set_DataSource(dt);
        DataList1.DataBind();
    } //Page_Load
		</script>
	</HEAD>
	<body>
		<form id="Form1" method="post" runat="server">
			<h3>Custom DataList - RenderContents - VJ# Example</h3>

			<aspSample:CustomDataListRenderContents id="DataList1" runat="server" 
			    BorderColor="#999999" BorderStyle="None" BackColor="White" CellPadding="3" 
			    GridLines="Vertical" BorderWidth="1px" Width="100px">
		
          <HeaderStyle Font-Bold="True" ForeColor="White" BackColor="#000084" />
          <HeaderTemplate>
              <asp:Label id="Label1" runat="server">Column1</asp:Label>
          </HeaderTemplate>

          <ItemStyle ForeColor="Black" BackColor="#EEEEEE" />
          <ItemTemplate>
              <asp:Label id="Label2" runat="server"><%# DataBinder.Eval(Container.get_DataItem(), "Column1") %></asp:Label>
          </ItemTemplate>

          <AlternatingItemStyle BackColor="#DCDCDC" />
          <AlternatingItemTemplate>
              <asp:Label id="Label3" runat="server"><%# DataBinder.Eval(Container.get_DataItem(), "Column1") %></asp:Label>
          </AlternatingItemTemplate>
          
      </aspSample:CustomDataListRenderContents>
		</form>
	</body>
</HTML>
...package Samples.AspNet;

public class CustomDataListRenderContents
    extends System.Web.UI.WebControls.DataList
{
    protected void RenderContents(System.Web.UI.HtmlTextWriter writer)
    {
        // Place some text before the DataList.
        writer.Write("Here is some text from the RenderContent method.<br>");
        // Call the base RenderContents method.
        super.RenderContents(writer);
    } //RenderContents
} //CustomDataListRenderContents

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

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