如何在具有GUID主键和默认newsequentialid()的表上使用SQLBulkCopy？

在具有GUID主键和默认newsequentialid()的表上使用SQLBulkCopy时

例如

CREATE TABLE [dbo].[MyTable](
[MyPrimaryKey] [uniqueidentifier] NOT NULL CONSTRAINT [MyConstraint]  DEFAULT (newsequentialid()),
[Status] [int] NULL,
[Priority] [int] NULL,
 CONSTRAINT [PK_MyTable] PRIMARY KEY NONCLUSTERED 
(
[MyPrimaryKey] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]

与C#代码

        tran = connection.BeginTransaction();
        SqlBulkCopy sqlCopy = new SqlBulkCopy(connection,SqlBulkCopyOptions.Default, tran);            

        sqlCopy.DestinationTableName = "MyTable";            
        sqlCopy.WriteToServer(dataTable);

给你一个错误......

列'MyPrimaryKey'不允许DBNull.Value

我试过摆弄SqlBulkCopyOptions.唯一有效的方法是将MyPrimaryKey字段设置为允许空值并删除主键.

任何人都知道这个问题是否有解决方法？或者您可以验证没有解决方法(除了更改表结构)？

您需要设置列映射.第一次打电话

sqlCopy.ColumnMappings.Clear();

然后打电话

sqlBulkCopy.ColumnMappings.Add("Status", "Status");
sqlBulkCopy.ColumnMappings.Add("Priority", "Priority");

这意味着批量复制将停止尝试插入MyPrimaryKey列,并且只会插入status和Priority列.