我在下面尝试这 2 个调用,但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。它是唯一一个在我的数据库表上定义的不可为空的。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