ok, I've enabled the filtering on my grid and put the default Filter for each column to StartsWith like this
colTxt.Filter = new ColumnFilterData(GridKnownFunction.StartsWith);
Now when i enter some text in the filter area the filter does not occur and when i erase the filter string the grid throws an execption stating that the object is not defined (Null)...
Could you put me on your payrole please :)