i appreciate your effort. I certainly believe that this is a bug of datagrid control. I never encountered this with other controls and as i have said, it only happens during the first launch of the program.

I haven't heard of Greentee's Grid Control but I had tried the evaluation copy of VSFlexgrid. I don't have the licensed copy of the control yet since our company opted not to buy for some strange reasons, one of which is the price. That's the reason why I use datagrid control.

just one thing, can you give me the URL of the greentee's grid control so that i can evaluate it?

Thanks