Just add the following to support the empty text in the GridView.

protected override void RenderContents(HtmlTextWriter writer)
{
	if (Extender.AdapterEnabled)
	{
		GridView gridView = Control as GridView;
		if (gridView != null)
		{
			if ((gridView.Rows.Count == 0) && !String.IsNullOrEmpty(gridView.EmptyDataText))
			{
				writer.WriteLine();
				writer.WriteBeginTag("div");
				writer.WriteAttribute("class", "AspNet-GridView-Empty");
				writer.Write(HtmlTextWriter.TagRightChar);
				writer.WriteLine();
				writer.WriteLine(gridView.EmptyDataText);
				writer.WriteEndTag("div");
				return;
			}

Example of tag to be added to the css

 
.NiceGridView .AspNet-GridView div.AspNet-GridView-Empty
{
	border-width: 1px;
	border-style: solid;
	border-color: #aaaaaa;
	padding: 2px;
}
 Cheers
 Joakim E. 

Thank you for posting this solution.  I found it helpful and have used it.  The only thing I would add is that you can?t necessarily use the ?EmptyDataTemplate.?  You have to configure the ?EmptyDataText? property for the gridview.  Obvious ? I know, but I hope pointing it out saves others some time if needed.

Also, here?s the VB version:

                                    If (gridView.Rows.Count = 0) And Not String.IsNullOrEmpty(gridView.EmptyDataText) Then

                                                writer.WriteLine()

                                                writer.WriteBeginTag("div")

                                                writer.WriteAttribute("class", "AspNet-GridView-Empty")

                                                writer.Write(HtmlTextWriter.TagRightChar)

                                                writer.WriteLine()

                                                writer.WriteLine(gridView.EmptyDataText)

                                                writer.WriteEndTag("div")

                                                Return

                                    End If

I think I've got a fix for the EmptyDataTemplate issue:

 Add the following to RenderContents in GridViewAdapter.cs right before the ///// BODY //// section

/////////////// EmptyDataTemplate ///////////////////////
if (gridView.Rows.Count == 0) {
	//Control[0].Control[0] s/b the EmptyDataTemplate.
	if (gridView.HasControls()) {
		if (gridView.Controls[0].HasControls()) {
			if (gridView.Controls[0].Controls[0] is GridViewRow) {
				rows.Clear();
				rows.Add(gridView.Controls[0].Controls[0]);
				gvrc = new GridViewRowCollection(rows);
				WriteRows(writer, gridView, gvrc, "tfoot");
			}
		}
	}
}					

Add the following to GetRowClass right before return className.Trim();

//// EmptyDataTemplate
if ((row.RowType & DataControlRowType.EmptyDataRow) == DataControlRowType.EmptyDataRow) {
className += " AspNet-GridView-Empty ";
}

.AspNet-GridView table tfoot tr.AspNet-GridView-Empty td
{
    color: #F7F6F3;
    background: #5D7B9D;
    font-weight: bold;
    border-bottom: solid 1px #CCCCCC;
    border-right: solid 1px #CCCCCC;
    padding: 2px;
}

Hope this helps

why am I getting the following:

Error 6 'CompSoft.RenderContents(System.Web.UI.HtmlTextWriter)': no suitable method found to override I:\WebApps\ComputerLogging\CompSoft.aspx.cs 25 29 I:\WebApps\ComputerLogging\

Stelly