Eliminate Duplicates in Excel

[allurai_india ((Allu)Alluraiah Yallapragada)]

How do I group by one column in the datatable and take the sum?

@jamnanin I will suggest you one more way try like this. Let us take your excel stored in a datatable dta First group the datatable based on ID by using below Query and assign it to dt1 dt1=(From p In dta.Select() Group p by ID=p.Item(“ID”).ToString Into Group Select Group(0)).ToArray.CopyToDataTable() Now take only two columns by using below query dt1=dt1.DefaultView.ToTable(False,“ID”,“Name”) Now Add one datacolumn to dt1 by using add datacolumn activity and give name Amount to that c…