public void setNoDataFound(Object sender,DataGridItemEventArgs e)
{
	if(m_DataExists == false)
	{
		for (int i = 0;i < e.Item.Cells.Count;i++)
		{
			e.Item.Cells[i].Visible = false;
		}
		TableCell c = new TableCell();
		c.Text = "No Data Found";
		e.Item.Cells.Add(c);   
		dg.Width = System.Web.UI.WebControls.Unit.Percentage(100);
	}	
	else
	{
		try
			{
				if(prev_CategoryId != Convert.ToInt32(e.Item.Cells[0].Text) && prev_CustomerId!=Convert.ToInt32(e.Item.Cells[1].Text))
				{
					prev_CategoryId = Convert.ToInt32(e.Item.Cells[0].Text);
					prev_CustomerId=Convert.ToInt32(e.Item.Cells[1].Text);
					int rspan;
					rspan = ds.Tables[0].Select("CustomerCategoryID=" +  prev_CategoryId).Length ;
					e.Item.Cells[0].RowSpan = rspan;
					e.Item.Cells[1].RowSpan = rspan;
					e.Item.Cells[2].RowSpan = rspan;
				}
				else
				{
					e.Item.Cells[0].Visible = false;
				}
		}
		catch
		{
	
		}
		dg.Width = System.Web.UI.WebControls.Unit.Percentage(100);
	}
}