Fastest way to compare two datatables?

[cPubis]

Here's my code:

Dim myCON As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\myDB.mdb;Jet OLEDB:Database Password=xxxxxxxxxx"

DT1TableAdapter.Connection.ConnectionString = myCON
DT1TableAdapter.Connection.Open()
DT2TableAdapter.Connection.ConnectionString = myCON
DT2TableAdapter.Connection.Open()

DT1TableAdapter.Fill(DataSet1.DT1)
DT2TableAdapter.Fill(DataSet1.DT2)

DT1BindingSource.MoveFirst()
DT2BindingSource.MoveFirst()

For i = 0 To DT1BindingSource.Count – 1

    C_ID1 = DT1BindingSource.Current("ID")                
    C_AC1 = DT1BindingSource.Current("AC")

    DT2BindingSource.Filter = "ID=" & "'" & C_ID1 & "'"

    C_AC2 = DT2BindingSource.Current("AC")

    If C_AC1 <> C_AC2 Then
       Dim DRV As DataRow = DirectCast(DT1BindingSource.Item(i), DataRowView).Row
       DataSet1.TempDT.Rows.Add(DRV.ItemArray)
    End If
    DT1BindingSource.MoveNext()
Next
End If
… load the report (TempDT as datasource)

Please note that I use 'AC' column as a comparison factor because if it is different then all other columns are different as this column represents the total of all other columns' calculations. Also, please note that I need to print all the columns in the report and that's why I load them all with the TableAdapter.Fill

Thanks