2012-08-08 136 views
4

我正在通过smo进行恢复过程。经过成功恢复,我启用了我的数据库 currentDb.SetOnline();关闭主线程

问题是数据库实例在此之后无法工作。该实例无法连接。所以我想我不会关闭我的应用程序。

Application.Exit(); 

但是编写上面的代码并不存在我的应用程序,而是我得到了异常。详情

enter code here System.NullReferenceException了未处理

Message="Object reference not set to an instance of an object." 
    Source="VitoProject" 
    StackTrace: 
     at VitoProject.backAndRestore.restoreDatabase_Click(Object sender, EventArgs e) in C:\WorkSpace\VitoProject\VitoProject\backAndRestore.cs:line 176 
     at System.Windows.Forms.Control.OnClick(EventArgs e) 
     at System.Windows.Forms.Button.OnClick(EventArgs e) 
     at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) 
     at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) 
     at System.Windows.Forms.Control.WndProc(Message& m) 
     at System.Windows.Forms.ButtonBase.WndProc(Message& m) 
     at System.Windows.Forms.Button.WndProc(Message& m) 
     at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) 
     at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) 
     at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) 
     at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) 
     at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) 
     at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) 
     at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) 
     at System.Windows.Forms.Application.Run(Form mainForm) 
     at VitoProject.Program.Main() in C:\WorkSpace\VitoProject\VitoProject\Program.cs:line 18 
     at System.AppDomain.nExecuteAssembly(Assembly assembly, String[] args) 
     at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) 
     at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() 
     at System.Threading.ThreadHelper.ThreadStart_Context(Object state) 
     at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 
     at System.Threading.ThreadHelper.ThreadStart() 

回答

1

这可能不是最好的解决方案,但如果你想退出你的应用程序和东西越来越红,你可能想尝试;

Environment.Exit(1); 
+0

Thanx ..正确的目标 – greatmajestics 2012-08-08 08:32:07

+0

注意:刚刚发现传递1是如果你期待错误。一个更清洁的方法是传递0。 – 2012-08-16 11:06:11