How to handle formview and gridview when underlying table is empty?

objectdatasource is used here.

   private bool LoadDataEmpty
    {
        get { return (bool)(ViewState["LoadDataEmpty"] ?? false); }
        set { ViewState["LoadDataEmpty"] = value; }
    }

    protected void ObjectDataSource1_Selected(object sender, ObjectDataSourceStatusEventArgs e)
    {
        //  bubble exceptions before we touch e.ReturnValue
        if (e.Exception != null)
        {
            throw e.Exception;
        }
        // get the DataTable from the ODS select mothod
        DataTable dataTable = (DataTable)((DataSet)e.ReturnValue).Tables[0];

        // if rows=0 then add a dummy (null) row and set the LoadDataEmpty flag.
        if (dataTable.Rows.Count == 0)
        {
            DataRow row = dataTable.NewRow();
            row[0] = 1;
            row[1] = "";
            row[2] = "";
            row[3] = "";
            row[4] = "";
            row[5] = DateTime.Now.ToString();
            dataTable.Rows.Add(row);
            LoadDataEmpty = true;
        }
        else
        {
            LoadDataEmpty = false;
        }

    }
    protected void EditGrid_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (LoadDataEmpty && e.Row.RowType == DataControlRowType.DataRow)
        {
            e.Row.Visible = false;
            e.Row.Controls.Clear();
        }
    }