Is this the best way to do it?

[PaulHarman]

    Private Sub checkReturnedDate()

        Dim rownumber As Integer = "0"
        For Each row In DataGridView1.Rows

            If Not DataGridView1.Item("Datereturned", rownumber).Value() = "" Then
                Dim DateReturned As Date = DataGridView1.Item("Datereturned", rownumber).Value()
                Dim twoweeksago As Date = Date.Today.AddDays(-14)
                If DateReturned < twoweeksago Then
                    Console.Write(DateReturned)
                End If
            End If
            rownumber = rownumber + 1
        Next

    End Sub

Basically, the field may be blank, or it is in the format 19-08-2010. I want to find any dates which are over 2 weeks from today. It seems to work ok, but just wanted to see if this was the best way to do it.

Thanks