troubleshooting Question

Access autonumber field problem

Avatar of Moe DeShong
Moe DeShongFlag for United States of America asked on
Visual Basic.NET
2 Comments1 Solution353 ViewsLast Modified:
I am trying to add a row to a datatable then retrieve the autonumber value.  I use this code to add the row to the datatable

Dim NewRow As DataRow = dtItems.NewRow
         ItemAdapter.InsertCommand = New OleDbCommand("INSERT INTO Items (txtItemNumber, txtItemtype) Values(?, '" & Me.cboItemType.Text & "')", cnnData)
         ItemAdapter.InsertCommand.CommandType = CommandType.Text
         ItemAdapter.InsertCommand.Parameters.Add("@txtItemNumber", OleDbType.Char, 15, "txtItemNumber")

         AddHandler ItemAdapter.RowUpdated, New OleDbRowUpdatedEventHandler(AddressOf OnRowUpdated)
         Catch ex As Exception
            MsgBox("Update failed")
         End Try
When I get to the dtItems.rows.add(NewRow) I get an error message the the field "txtItemNumber" does not allow DBNull.  Thats obvious because its the autonumber field.  What am I doing wrong.

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