I have a datatable with 4 columns A, B, C and D such that a particular combination of values for column A, B and C is unique in the datatable.
Objective:
Dim dr As DataRow() dr = dt.Select("A="& a & "and B="& b & "and C=" & c,"A",DataViewRowState.CurrentRows)
Where A,B,C are the column names where second parameter is for sort expression