一,场景

    通过单击按钮执行ViewModel中的Command来关闭窗体，项目引用Prism4架构及使用MVVM进行UI层的开发。

二, 实现代码(方式应该有很多种，现介绍两种我所想过的方式)

     (1).通过发布订阅事件来关闭窗体

     1.CodeBahind中的代码

1   public partial class ApproveLoginView : Window 2  3     {         4  5           [ImportingConstructor]          6  7           public ApproveLoginView()       8  9          {          10 11                   InitializeComponent();           12 13                   ServicesHelper.EventAggregator.GetEvent
      
          ().Subscribe(CloseView);     14 15          }16 17         private void CloseView(object o)       18 19         {          20 21              if(o == DataContext)        22 23                     Close();           24 25         }     26 27 }
      

     2.ViewModel部分代码

1 public class ApproveLoginViewModel : NotificationObject,  2     { 3         4         private IEventAggregator _eventAggregator; 5  6         [ImportingConstructor] 7         public ApproveLoginViewModel(IEventAggregator eventAggregator) 8         { 9             _eventAggregator = eventAggregator;10         }11 12         #region Command13 14         private ICommand _okCommand;15         public ICommand OkCommand16         {17             get18             {19                 if (_okCommand == null)20                 {21                     _okCommand = new RelayCommand(Ok);22                 }23                 return _okCommand;24             }25             private set { }26         }27 28        29         private void Ok()30         {31             _eventAggregator.GetEvent
      
       ().Publish(this);32         }33 34         35         #endregion36     }
      

     （2).通过Prism的interactionRequest来实现

       1.Window中的Xaml部分代码

1 
      
        8     
       
         9          
        
         10               
         11         
        12     
       13     
       
        14             
        15     
       16 
      

       2.ViewModel中的部分代码

 

1  public class MainWindowViewModel : NotificationObject 2     { 3         public MainWindowViewModel() 4         { 5             this.CloseCommand = new DelegateCommand(new Action(Close)); 6             this.CloseRequest = new InteractionRequest
      
       (); 7         } 8  9         public DelegateCommand CloseCommand { get; set; }10 11         private void Close()12         {13             this.CloseRequest.Raise(new Notification() );14         }15 16         public InteractionRequest
       
         CloseRequest { get; set; }17     }
       
      

好了，就说到这了，因为自己在通过ViewModel来关闭view碰到些问题，上网找了些资料后找到这些解决方法的，希望对有需要的朋友能有帮助。