Hey Guys!

I'm trying to add objects from a class I created using data from an excel worksheet to a list using a for loop

Code:
Dim someParts As New List(Of Parts)
Dim excel As New Excel.Application()
Dim wb As Excel.Workbook = excel.Workbooks.Open(OpenFileDialog1.FileName())
Dim ws As Excel.Worksheet = TryCast(excel.ActiveSheet, Excel.Worksheet)
Dim range As Excel.Range

range = ws.UsedRange

For row = 2 To range.Rows.Count
        someParts.Add(New Parts(ws.Cells(row, 3).Value2.ToString,
                                ws.Cells(row, 2).Value2.ToString,
                                Split(ws.Cells(row, 6).Value2.ToString, "<>"),
                                ws.Cells(row, 4).Value2))
Next
When I run it I receive "System.NullReferenceException was unhandled by user code Message=Object reference not set to an instance of an object." Any help or suggestions would be great!