未处理 System.ArgumentNullException
  Message="值不能为空。\r\n参数名: activationContext"
  Source="mscorlib"
  ParamName="activationContext"
  StackTrace:
       在 System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext, String[] activationCustomData)
       在 System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext activationContext)
       在 Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
       在 System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       在 System.Threading.ThreadHelper.ThreadStart()
这个是调试运行的时候抛出的异常 ,怎么解决啊 ?
不解决我程序都不能调试啊