Adding an empty data template to the repeater control

Hi, i was looking around for an article on how to extend the repeater control to add an empty data template similar to the GridView control.  Here is a link to the the article i found.  However i discovered that it rendered the header and footer, so i set about creating my own one and come up with the following:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace ControlLibrary
{
  public class Repeater : System.Web.UI.WebControls.Repeater
  {
  private ITemplate _emptyDataTemplate;[Browsable(false)]
  [PersistenceMode(PersistenceMode.InnerProperty)]
  public ITemplate EmptyDataTemplate
  {
  get { return _emptyDataTemplate; }
  set { _emptyDataTemplate = value; }
  }protected override void Render(HtmlTextWriter output)
  {
  // If there is no data then we don't wish to render anything (including the header and the footer)
  if (this.Items.Count == 0)
  {
  // If an empty data template has been provided then display it
  if (this.EmptyDataTemplate != null)
  {
  PlaceHolder phdTemplate = new PlaceHolder();
  this.EmptyDataTemplate.InstantiateIn(phdTemplate);
  phdTemplate.RenderControl(output);
  }
  }
  else
  base.Render(output);
  }
  }
}

Now all you have to do is say:


<%@ Register TagPrefix=”Flixon” Namespace=”ControlLibrary” Assembly=”ControlLibrary” %>
<Flixon:Repeater>
    <ItemTemplate>
          <%# Container.DataItem %>
    </ItemTemplate>
    <EmptyDataTemplate>
         No data returned!
    </EmptyDataTemplate>
</Flixon:Repeater>


on your page and you’re done.

I hope this helps.

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This entry was posted on Wednesday, September 26th, 2007 at 8:33 am and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.