How do I color a cell in my datagrid depending on it's value and another value in other column

[M.Sauve]

Hi

I want to compare 02 columns in my datagrid and for example if my column5 <
column6 I want to color my columns 5 and 6.
This is my code and I'm not able to get the value of column6 in my Paint
method

thank you for your help

public class DataGridColored TextBoxColumn : DataGridTextBox Column
{
protected override void Paint(System.Dr awing.Graphics g,
System.Drawing. Rectangle bounds, System.Windows. Forms.CurrencyM anager
source, int rowNum, System.Drawing. Brush backBrush, System.Drawing. Brush
foreBrush, bool alignToRight)
{
try
{
int col = this.DataGridTa bleStyle.GridCo lumnStyles.Inde xOf(this);
if (col == 5)
{
object Obj1 = this.GetColumnV alueAtRow(sourc e, rowNum);
int ID1 = Convert.ToInt32 (Obj1.ToString( ));

// Need help here
object Obj2 = ... Get object from column 6 how ?
int ID2 = Convert.ToInt32 (Obj2.ToString( ));

if (ID1 > ID2)
{
foreBrush = new SolidBrush(Colo r.Red);
}
}
}
finally
{
// color cell in col 5
base.Paint(g, bounds, source, rowNum, backBrush, foreBrush,
alignToRight);

// how to color the cell in color 6 ?
...
}
}
}