VB.NET สอบถามเรื่อง datetimepicker ครับ แปลงจาก คศ >> พศ

Dim D1, D2, M1, M2, Y1, Y2, MDY1, MDY2 As String
        D1 = DateTimePicker1.Value.Day.ToString
        M1 = DateTimePicker1.Value.Month.ToString
        Y1 = DateTimePicker1.Value.Year.ToString
        MDY1 = M1 & "/" & D1 & "/" & Y1

        D2 = DateTimePicker2.Value.Day.ToString
        M2 = DateTimePicker2.Value.Month.ToString
        Y2 = DateTimePicker2.Value.Year.ToString
        MDY2 = M2 & "/" & D2 & "/" & Y2

        Dim sd As String = ""
        sd = "Select OrderDate,OrderID From Orders"
        sd &= " Where OrderDate between  '" & MDY1 & "' AND '" & MDY2 & "'"

Format(DateValue(CDate(txttime.Text).ToString(New System.Globalization.CultureInfo("en-GB", True))), "MM/dd/yyyy")