服务器xxxx的SQL Server备份失败

Question

我试图通过c＃代码将本地SQL Server数据库备份到我的本地计算机，并且我得到服务器备份失败。

代码如下：

using (var con = new SqlConnection(conn)) 
      { 
       const string destination = "d:\\backups"+"/"; 
       var sqlServer = new Server(new ServerConnection(con)); 
       con.Open(); 
       var bkpDatabase = new Backup { Action = BackupActionType.Database, Database = name }; 
       var bkpDevice = new BackupDeviceItem(destination + name + ".bak", DeviceType.File); 

       bkpDatabase.Devices.Add(bkpDevice); 
       bkpDatabase.Checksum = true; 
       bkpDatabase.ContinueAfterError = true; 
       bkpDatabase.Incremental = false; 
       bkpDatabase.Initialize = true; 
       // Perform the backup 
       bkpDatabase.SqlBackup(sqlServer); 

       con.Close(); 
      } 

我已经使用了以下参考：

mircrosoft.sqlserver.smo; 
mircrosoft.sqlserver.smoextended; 
mircrosoft.sqlserver.management.sdk.sfc; 
mircrosoft.sqlserver.connectioninfo; 

内部异常：

Microsoft.SqlServer.Management.Smo.FailedOperationException was caught 
HelpLink=http://go.microsoft.com/fwlink?  ProdName=Microsoft+SQL+Server&ProdVer=10.50.2500.0+((KJ_PCU_Main).110617-   0026+)&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptio nText&EvtID=Backup+Server&LinkId=20476 
HResult=-2146233088 
Message=Backup failed for Server 'XXXXX'. 
Source=Microsoft.SqlServer.SmoExtended 
    Operation=Backup 
    StackTrace: 
    at Microsoft.SqlServer.Management.Smo.Backup.SqlBackup(Server srv) 
    at DatabaseCreation.Program.BackupDatabase(String name, String conn) in c:\Users\Documents\Visual Studio 2013\Projects\Databaseinstallation\DatabaseCreation\Program.cs:line 154 
    InnerException: System.NullReferenceException 
    HResult=-2147467261 
    Message=Object reference not set to an instance of an object. 
    Source=Microsoft.SqlServer.ConnectionInfo 
    StackTrace: 
     at Microsoft.SqlServer.Management.Common.ConnectionManager.get_IsOpen() 
     at Microsoft.SqlServer.Management.Common.ConnectionManager.Connect() 
     at Microsoft.SqlServer.Management.Common.ConnectionManager.PoolConnect() 
     at  Microsoft.SqlServer.Management.Common.ConnectionManager.get_DatabaseEngineType() 
     at Microsoft.SqlServer.Management.Smo.Server.GetExecutionManager() 
     at Microsoft.SqlServer.Management.Smo.Server.get_ExecutionManager() 
     at Microsoft.SqlServer.Management.Smo.SqlSmoObject.get_ServerVersion() 
     at Microsoft.SqlServer.Management.Smo.Backup.Script(Server targetServer) 
     at Microsoft.SqlServer.Management.Smo.Backup.SqlBackup(Server srv) 

Answer 1

也许你有逃脱\字符在您的目的地路径：

@"d:\backups" 

或

"d:\\backups" 

尝试以下操作：

using (var con = new SqlConnection(conn)) 
{ 
    const string destination = "c:\\backups"; 
    var fileName = Path.Combine(destination, String.Format("{0}.bak", name)); 
    if (!Directory.Exists(destination)) 
     Directory.CreateDirectory(destination); 
    var sqlServer = new Server(new ServerConnection(con)); 
    var bkpDatabase = new Backup 
    { 
     Action = BackupActionType.Database, 
     Database = name 
    }; 
    var bkpDevice = new BackupDeviceItem(fileName, DeviceType.File); 
    bkpDatabase.Devices.Add(bkpDevice); 
    bkpDatabase.Checksum = true; 
    bkpDatabase.ContinueAfterError = true; 
    bkpDatabase.Incremental = false; 
    bkpDatabase.Initialize = true; 
    bkpDatabase.SqlBackup(sqlServer); 
}