namespace ViewModel { public class BaseViewModel : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; public const string UINameSapce = "KibaFramework"; public string UIElementName = ""; public FrameworkElement UIElement { get; set; } public Window WindowMain { get; set; } //主窗体 public EventHandler CloseCallBack = null; //窗体/页面/控件 关闭委托 public BaseViewModel() { WindowMain = Application.Current.MainWindow; SetUIElement(); } #region 通过反射创建对应的UI元素 public void SetUIElement() { Type childType = this.GetType();//获取子类的类型 string name = this.GetType().Name; UIElementName = name.Replace("VM_", ""); UIElementName = UIElementName.Replace("`1", "");//应对泛型实体 if (name.Contains("Window")) { UIElement = GetElement<Window>(); (UIElement as Window).Closing += (s, e) => { if (CloseCallBack != null) { CloseCallBack(s, e); } }; } else if (name.Contains("Page")) { UIElement = GetElement<Page>(); (UIElement as Page).Unloaded += (s, e) => { if (CloseCallBack != null) { CloseCallBack(s, e); } }; } else if (name.Contains("UC")) { UIElement = GetElement<UserControl>(); (UIElement as UserControl).Unloaded += (s, e) => { if (CloseCallBack != null) { CloseCallBack(s, e); } }; } else { throw new Exception("元素名不规范"); } } public E GetElement<E>() { Type type = GetFormType(UINameSapce + "." + UIElementName); E element = (E)Activator.CreateInstance(type); return element; } public static Type GetFormType(string fullName) { Assembly assembly = Assembly.Load(UINameSapce); Type type = assembly.GetType(fullName, true, false); return type; } #endregion #region 窗体操作 public void Show() { if (UIElement is Window) { (UIElement as Window).Show(); } else { throw new Exception("元素类型不正确"); } } public void ShowDialog() { if (UIElement is Window) { (UIElement as Window).ShowDialog(); } else { throw new Exception("元素类型不正确"); } } public void Close() { if (UIElement is Window) { (UIElement as Window).Close(); } else { throw new Exception("元素类型不正确"); } } public void Hide() { if (UIElement is Window) { (UIElement as Window).Hide(); } else { throw new Exception("元素类型不正确"); } } #endregion #region Message public void MessageBox(Window owner, string msg) { DispatcherHelper.GetUIDispatcher().Invoke(new Action(() => { if (owner != null) { System.Windows.MessageBox.Show(owner, msg, "提示信息"); } else { System.Windows.MessageBox.Show(WindowMain, msg, "提示信息"); } })); } public void MessageBox(string msg) { DispatcherHelper.GetUIDispatcher().Invoke(new Action(() => { System.Windows.MessageBox.Show(WindowMain, msg, "提示信息"); })); } public void MessageBox(string msg, string strTitle) { DispatcherHelper.GetUIDispatcher().Invoke(new Action(() => { System.Windows.MessageBox.Show(WindowMain, msg, "提示信息"); })); } public void MessageBox(string msg, Action<bool> callback) { MessageBox("系统提示", msg, callback); } public void MessageBox(string title, string msg, Action<bool> callback) { DispatcherHelper.GetUIDispatcher().Invoke(new Action(() => { if (System.Windows.MessageBox.Show(WindowMain, msg, title, MessageBoxButton.YesNo) == MessageBoxResult.Yes) { callback(true); } else { callback(false); } })); } #endregion #region 异步线程 public void AsyncLoad(Action action) { IAsyncResult result = action.BeginInvoke((iar) => { }, null); } public void AsyncLoad(Action action, Action callback) { IAsyncResult result = action.BeginInvoke((iar) => { this.DoMenthodByDispatcher(callback); }, null); } public void AsyncLoad<T>(Action<T> action, T para, Action callback) { IAsyncResult result = action.BeginInvoke(para, (iar) => { this.DoMenthodByDispatcher(callback); }, null); } public void AsyncLoad<T, R>(Func<T, R> action, T para, Action<R> callback) { IAsyncResult result = action.BeginInvoke(para, (iar) => { var res = action.EndInvoke(iar); this.DoMenthodByDispatcher<R>(callback, res); }, null); } public void AsyncLoad<R>(Func<R> action, Action<R> callback) { IAsyncResult result = action.BeginInvoke((iar) => { var res = action.EndInvoke(iar); this.DoMenthodByDispatcher<R>(callback, res); }, null); } public void DoMenthodByDispatcher<T>(Action<T> action, T obj) { DispatcherHelper.GetUIDispatcher().BeginInvoke(new Action(() => { action(obj); }), DispatcherPriority.Normal); } public void DoMenthodByDispatcher(Action action) { DispatcherHelper.GetUIDispatcher().BeginInvoke(new Action(() => { action(); }), DispatcherPriority.Normal); } #endregion protected void OnPropertyChanged([CallerMemberName]string propertyName = "") { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } } }