لدي مشكله في تعديل بيانات DataGridview

For i As Integer = 0 To DataGridView1.Rows.Count - 1

                    Operationscmd = New OleDbCommand(" Update Operations SET buyDiscound=" & DataGridView1(9, DataGridView1.Rows(i).Index).Value & ", BuyEarn =" & DataGridView1(11, DataGridView1.Rows(i).Index).Value & ", BuyNotes ='" & DataGridView1(12, DataGridView1.Rows(i).Index).Value & "', BuyQty = " & DataGridView1(7, DataGridView1.Rows(i).Index).Value & ",BuyUnitePirce = " & DataGridView1(3, DataGridView1.Rows(i).Index).Value & ",OperItemExp =  #" & DataGridView1(5, DataGridView1.Rows(i).Index).Value & "#,TotalB =" & DataGridView1(10, DataGridView1.Rows(i).Index).Value & ",TotalG = " & DataGridView1(8, DataGridView1.Rows(i).Index).Value & ") Where Operations.OperID= " & DataGridView1(0, DataGridView1.Rows(i).Index).Value & "", con)