>I did what you specified and when I hit the delete key
>the following message came up:
>
> remove column and all contained objects
>
>I answered YES and the following error came up:
>
> member Column7 is a class member
>
>and the column remained.
>
>what to do now?

I think you may have a grid class. If that so, you would not be able to remove the column in design time, only in the run time.