修改bug

VIZ.Package.Module/Main/ViewModel/MainTopViewModel.cs

@@ -285,9 +285,9 @@ namespace VIZ.Package.Module
             //调用关闭消息
             ProjectCloseMessage closemsg = new ProjectCloseMessage();
             ApplicationDomainEx.MessageManager.Send(closemsg);
-
             this.UpdateCommandStatus();
 
+            ApplicationDomainEx.ProjectDbContext?.Dispose();
 
 
             SaveProjectWindowModel vm = window.DataContext as SaveProjectWindowModel;