Empty Grid View with Header & Footer

protected override int CreateChildControls(System.Collections.IEnumerable dataSource, bool dataBinding)
{
    int rows = base.CreateChildControls(dataSource, dataBinding);
    
    //  no data rows created, create empty table if enabled
    if (rows == 0 && (this.ShowFooterWhenEmpty || this.ShowHeaderWhenEmpty))
    {
        //  create the table
        Table table = this.CreateChildTable();

        DataControlField[] fields;
        if (this.AutoGenerateColumns)
        {
            PagedDataSource source = new PagedDataSource();
            source.DataSource = dataSource;

            System.Collections.ICollection autoGeneratedColumns = this.CreateColumns(source, true);
            fields = new DataControlField[autoGeneratedColumns.Count];
            autoGeneratedColumns.CopyTo(fields, 0);
        }
        else
        {
            fields = new DataControlField[this.Columns.Count];
            this.Columns.CopyTo(fields, 0);
        }

        if (this.ShowHeaderWhenEmpty)
        {
            //  create a new header row
            GridViewRow headerRow = base.CreateRow(-1, -1, DataControlRowType.Header, DataControlRowState.Normal);
            this.InitializeRow(headerRow, fields);

            //  add the header row to the table
            table.Rows.Add(headerRow);
        }

        //  create the empty row
        GridViewRow emptyRow = new GridViewRow(-1, -1, DataControlRowType.EmptyDataRow, DataControlRowState.Normal);
        TableCell cell = new TableCell();
        cell.ColumnSpan = fields.Length;
        cell.Width = Unit.Percentage(100);

        //  respect the precedence order if both EmptyDataTemplate
        //  and EmptyDataText are both supplied ...
        if (this.EmptyDataTemplate != null)
        {
            this.EmptyDataTemplate.InstantiateIn(cell);
        }
        else if (!string.IsNullOrEmpty(this.EmptyDataText))
        {
            cell.Controls.Add(new LiteralControl(EmptyDataText));
        }

        emptyRow.Cells.Add(cell);
        table.Rows.Add(emptyRow);

        if (this.ShowFooterWhenEmpty)
        {
            //  create footer row
            GridViewRow footerRow = base.CreateRow(-1, -1, DataControlRowType.Footer, DataControlRowState.Normal);
            this.InitializeRow(footerRow, fields);

            //  add the footer to the table
            table.Rows.Add(footerRow);
        }

        this.Controls.Clear();
        this.Controls.Add(table);
    }

    return rows;
}

[Category("Behavior")]
[Themeable(true)]
[Bindable(BindableSupport.No)]
public bool ShowHeaderWhenEmpty
{
    get
    {
        if (this.ViewState["ShowHeaderWhenEmpty"] == null)
        {
            this.ViewState["ShowHeaderWhenEmpty"] = false;
        }

        return (bool)this.ViewState["ShowHeaderWhenEmpty"];
    }
    set
    {
        this.ViewState["ShowHeaderWhenEmpty"] = value;
    }
}

[Category("Behavior")]
[Themeable(true)]
[Bindable(BindableSupport.No)]
public bool ShowFooterWhenEmpty
{
    get
    {
        if (this.ViewState["ShowFooterWhenEmpty"] == null)
        {
            this.ViewState["ShowFooterWhenEmpty"] = false;
        }

        return (bool)this.ViewState["ShowFooterWhenEmpty"];
    }
    set
    {
        this.ViewState["ShowFooterWhenEmpty"] = value;
    }
}