Select distinct rows and sum columns in DataTable VB.Net 2005 -

i have datatable contains:

id pocount pototal
       1              10
       2              20
b        4              10

i want result of new data table bellow:
id pocount pototal
       3              30
b        4              10

how can using datatable? project in vb.net 2005 , cannot use linq method. best way this?

i found link kinda near want. skip rows instead of summing columns when id similar. http://www.dotnetfunda.com/forums/show/2603/how-to-remove-duplicate-records-from-a-datatable

linq better - upgrade later vs express - free!

here 1 approach using class , dictionery

public class posummary     public property id string     public property count integer     public property total integer     sub new(poid string, pocount integer, pototal integer)         id = poid         count = pocount         total = pototal     end sub end class private sub button12_click(sender object, e eventargs) handles button12.click     dim pos new list(of posummary)     dim po new posummary("a", 1, 10)     pos.add(po)     po = new posummary("a", 2, 20)     pos.add(po)     po = new posummary("b", 4, 10)     pos.add(po)      debug.print("--data--")     each p posummary in pos         debug.print(p.id & " " & p.count & " " & p.total)     next      dim pd new dictionary(of string, posummary)      each p posummary in pos         if not pd.containskey(p.id)             pd.add(p.id, p)         else             pd(p.id).count += p.count             pd(p.id).total += p.total         end if     next     debug.print("--totals--")     each kvp keyvaluepair(of string, posummary) in pd         po = kvp.value         debug.print(po.id & " " & po.count & " " & po.total)     next     stop end sub