>>>>Base the grids on a common parent class?
>>>
>>>If I add a class to the same project as my form, how can I then add this grid visually to my form?
>>>
>>>Thanks again.
>>
>>Is this WinForms?
>>If so you can use 'Choose Items' on the relevant toolbox section. Browse to select the relevant DLL/EXE. The Grid should show up in the list. Just check it to add it to the Toolbox. But it's probably safer to put the class in a different project - VS can get a bit confused when it's in the same module....
>
>Should I pick the Control Library or Class Library project?

Don't think it makes much difference - just the default class that's created that you can get rid of anyway?