Dim streamReader As IO.StreamReader = New IO.StreamReader(_showcell)
'Reading CSV file content
While streamReader.Peek() <> -1
rowvalue = streamReader.ReadLine()
sb = rowvalue.Substring(1, 8) 'Error บรรทัดนี้หลังจากรันครับ
'cellvalue = rowvalue.Split(" ") 'check what is ur separator
DataGridView1.Rows.Add(New String() {sb})
End While