>Renato,
>
>Subclass the grid and write whatever code you want.

Ok thanks you're right,
but when you specific ColumnCount in a grid class, the develpoers cannot use this grid whit less columns of the class (control in a class cannot be remove at design time) so what I've to do ? If I create a grid class with few columns developers have to rewrite the method of new columns and we return to the start point, or maybe have I to create differents versions of the grid class with 2,3,4 ... 10,11,12 columns ? I think my library will be very fat and heavy

Any other suggestions ?