Is it possible to make math calculations between 2 columns in datagridview?

I have upgraded to VS2005 (what a difference a day makes!!!!). When I have datatable info presented to the user in a datagridview, is it possible to make math calculations (such as addition and subtraction) between 2 columns in that same datagridview while in the datagridview?  When I enter a number in one column I want it to subtract it  (after coding a button) from another column within that same datagridview.

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I've haven't used datasets in VS.NET yet, but im guessing something like:

Dim dg As DataGrid
Dim intValue As Integer

'dg.Item(1, 0) = dg.item(rowindex,columnindex)
intValue = CType(dg.Item(1, 0), Integer) + CType(dg.Item(1, 1), Integer)

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grouchyfdAuthor Commented:
So I convert the datatype by CType and then specify (row index, column index) for each exact record in the column I want to add togetther? If this makes the chage in the datagridview, I can push the update into the database.
I would play with it and see if it gives you the result you expect. You should be able to push the change back to the DB.
grouchyfdAuthor Commented:
Thank you for your help.
No problem. Thanks for points and grade.
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