Match items from multiple DataTables

[circuits2]

I want to find the instance of each item from one DataTable in another. There will not be duplicates.

Ordinarily I would just use For loops like this:

For Each aRow As DataRow In myDataSet.Tables("Table1").Rows

     For Each bRow As DataRow In myDataSet.Tables("Table2").Rows

          If bRow.Item(0) = aRow.Item(0) Then
               ' Found Matching Items
          End If

     Next bRow

Next aRow

I know that this is supremely innefficient and that there must be a better way. Can someone show me a faster method?