我正在尝试下面这两个调用但是它们都返回一个异常Customer_ID不允许DBNull.Value.但是当我调试时,我看到我的所有记录都分配了Customer_ID.它是我的数据库表中唯一一个不可为空的定义.是什么导致了这个错误?
- bulkCopy.WriteToServer(myBookingDataTable)
- bulkCopy.WriteToServer(myBookingss.ToArray())
这是我的整个代码.
- Using myConnection As sqlConnection = _
- New sqlConnection(connectionString)
- myConnection.Open()
- Using bulkCopy As sqlBulkCopy = _
- New sqlBulkCopy(My.Settings.ConnectionString(),sqlBulkCopyOptions.Default)
- bulkCopy.DestinationTableName = "dbo.Booking"
- Try
- ' Write from the source to the destination.
- bulkCopy.WriteToServer(myBookingDataTable)
- 'bulkCopy.WriteToServer(myBookingss.ToArray())
- Catch ex As Exception
- Console.WriteLine(ex.Message)
- Finally
- bulkCopy.Close()
- End Try
- End Using
确保源和目标中字段的顺序相同.