Calculation in DataGridView column

Question

I have a DataGridView in which I want to sum up values from two different columns into a third column.

Example DataGridView:

A   B           


        

Answer 1

You could easily do this

But you should have a dataset or localdatabase connection like SQL I will assume that you got it and name it Totaldataset.

Easily done I know it's too late answer but maybe it help some new readers.

Datacolumn column = new Datacolumn (); 
column.Columnname = "Total"; 
Totaldataset.Tables[0].Columns.["Total"].Expression = "a+b";