主要是經過一個WindowManager管理類,在window後臺代碼中經過WindowManager註冊須要彈出的窗體類型,在ViewModel經過WindowManager的Show方法,顯示出來。git
WindowManager代碼以下:this
public static class WindowManager { private static Hashtable _RegisterWindow = new Hashtable(); public static void Regiter<T>(string key) { _RegisterWindow.Add(key, typeof(T)); } public static void Regiter(string key, Type t) { if (!_RegisterWindow.ContainsKey(key)) _RegisterWindow.Add(key, t); } public static void Remove(string key) { if (_RegisterWindow.ContainsKey(key)) _RegisterWindow.Remove(key); } public static void ShowDialog(string key, object VM) { if (!_RegisterWindow.ContainsKey(key)) { throw (new Exception("沒有註冊此鍵!")); } var win = (Window)Activator.CreateInstance((Type)_RegisterWindow[key]); win.DataContext = VM; win.ShowDialog(); } }
作一個擴展方法,將子窗體註冊方法擴展到Window類型的對象上。spa
public static class WindowRegister { public static void Register(this Window win, string key) { WindowManager.Regiter(key, win.GetType()); } public static void Register(this Window win,string key,Type t) { WindowManager.Regiter(key,t); } public static void Register<T>(this Window win, string key) { WindowManager.Regiter<T>(key); } }
添加一個窗體,並註冊子窗體, this.Register<Window1>("Window1");對象
public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); this.DataContext = new MainWindowViewModel(); this.Register<Window1>("Effects"); } }
添加ViewModel,繼承自ViewModelBase,並在對應的命令中彈出子窗體Window1blog
private DelegateCommand<Window> _effectCommand = null; public DelegateCommand<Window> EffectCommand { set { _effectCommand = value; } get { if (_effectCommand == null) { _effectCommand = new DelegateCommand<Window>(Effect); } return _effectCommand; } } void Effect(Window window) { WindowManager.ShowDialog("Effects", this); }