/// 
/// Set the cell background colour to make the ups and downs more visible./// 
/// /// private void dgvData_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)    {    DataGridView dgv = sender as DataGridView;    if (dgv != null && e.RowIndex >= 0)        {        if (e.ColumnIndex > 0)            {            Color c;            if (e.Value != null && e.Value is Int32)                {                int value = (int) e.Value;                if (value > 0)                    {                    c = Color.LightGreen;                    }                else if (value < 0)                    {                    c = Color.Salmon;                    }                else                    {                    c = dgv.DefaultCellStyle.BackColor;                    }                e.CellStyle.BackColor = c;                }            }        }    }