删除数据库SQL Server 2008 R2 Express Edition - 例外

时间:2013-10-10 08:11:51

标签: c# sql sql-server sql-server-2008

我正在研究C#中的一个解决方案,我可以在SQL Server 2008 R2 Express Edition中删除数据库。我搜索了WWW并找到了以下解决方案: Script to kill all connections to a database (More than RESTRICTED_USER ROLLBACK)

我还尝试从SQL Server创建脚本:

EXEC msdb.dbo.sp_delete_database_backuphistory @database_name = N'apm4reform'
GO
USE [master]
GO
ALTER DATABASE [apm4reform] SET  SINGLE_USER WITH ROLLBACK IMMEDIATE
GO
USE [master]
GO
/****** Object:  Database [apm4reform]    Script Date: 10/10/2013 00:58:06 ******/
DROP DATABASE [apm4reform]
GO

这是我使用的代码:

private static bool DropDatabase(SqlConnection tmpConn, string connectionString, string databaseName)
        {
            string sqlDropDBQuery;
            bool result = false;

            try
            {
                tmpConn.ConnectionString = connectionString;
                tmpConn.Open();
                SqlCommand thisCommand = new SqlCommand();
                thisCommand.Connection = tmpConn;
                sqlDropDBQuery = string.Format("EXEC msdb.dbo.sp_delete_database_backuphistory @database_name = N'{0}'\n GO\n USE [master]\n GO\n ALTER DATABASE [{0}] SET  SINGLE_USER WITH ROLLBACK IMMEDIATE GO\n USE [master]\n GO\n DROP DATABASE [{0}]\n GO\n", databaseName);
                thisCommand.CommandText = sqlDropDBQuery;

                thisCommand.ExecuteNonQuery();
                result = true;

            }
            catch (Exception ex)
            {
                result = false;
            }
            finally
            {
                tmpConn.Close();
            }

            return result;
        }

不幸的是,我总是得到一个例外:

  

'GO'附近的语法不正确。 'GO'附近的语法不正确。不正确   'GO'附近的语法。

我也试过没有逃脱\ n!

有什么建议吗?

谢谢, tro

2 个答案:

答案 0 :(得分:0)

GO只是一个语句分隔符,只能由Sql Server Management Studio取消 不能通过ExecuteNonQuery在C#代码的语句中使用。 只需删除它,并确保每个语句都以分号结束

sqlDropDBQuery = string.Format("EXEC msdb.dbo.sp_delete_database_backuphistory " + 
                 "@database_name = N'{0}';USE [master];" + 
                 "ALTER DATABASE [{0}] SET SINGLE_USER WITH ROLLBACK IMMEDIATE;" +
                 "USE [master];DROP DATABASE [{0}];", databaseName);

答案 1 :(得分:0)

你可以试试这个。一个

var s =string. Format( @"EXEC msdb.dbo.sp_delete_database_backuphistory @database_name = N'{0}';

    USE master;

    ALTER DATABASE {0} SET  SINGLE_USER WITH ROLLBACK IMMEDIATE




    DROP DATABASE {0}",yourdbname);