comparing values in a datarow VB

I want to compare Values in two datarows row and row1. but this code is Generating an Error

 For Each row As DataRow In dt.Rows

                For Each row1 As DataRow In tmpdt.Rows
                    If row["STATE"].Tostring() = row1["STATE"].Tostring()


                    End If
                Next

            Next

Error are value of 'System.data.datarow' cannot be converted to 'Boolean' and Expression expected.