GridView - using CSS-Friendly Control Adapters removes EmptyDataTemplate and EmptyDataText

Question

As pointed out in the question:

• EmptyDataTemplate and EmptyDataText not working in GridView

  using CSS-Friendly Control Adapters removes the data that

Answer 1

If you look at the source for the CSS-Friendly adapter for GridView, provided in your link, you will see the following (note the missing else):

private void WriteRows(HtmlTextWriter writer, GridView gridView, GridViewRowCollection rows, string tableSection)
{
    if (rows.Count > 0)
    {

Basically the adapter makes no mention of EmptyDataTemplate or EmptyDataText - it's a simple oversight. Patching it is straightforward though. All you have to do is take the source provided, look at how the original GridView renders it, combine the concepts, and rebuild the original adapter:

case DataControlRowType.EmptyDataRow:
                if (this._emptyDataTemplate == null)
                {
                    container = new TableCell();
                    string emptyDataText = this.EmptyDataText;
                    if (emptyDataText.Length > 0)
                    {
                        container.Text = emptyDataText;
                    }
                    break;
                }
                container = new TableCell();
                template = this._emptyDataTemplate;
                break;
        }
        if (container != null)
        {
            if (columnSpan > 1)
            {
                container.ColumnSpan = columnSpan;
            }
            if (template != null)
            {
                template.InstantiateIn(container);
            }
            row.Cells.Add(container);
        }

Answer 2

Build cssfriendly from source instead of using the download link. Currently the latest is http://cssfriendly.codeplex.com/SourceControl/changeset/changes/24242 and EmptyDataText is working fine for me when I use that source.

Answer 3

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");
            }
        }
    }
}   

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

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

Finally, if you want to override the standard tfoot style, add a CSS section

.AspNet-GridView table tfoot tr.AspNet-GridView-Empty td
{

}