Esempi in C# (CSharp) per CanExecuteEvent

Esempio n. 1

 static RoutedCommand()
 {
     CanExecuteEvent.AddClassHandler <IRoutedCommandBindable>(CanExecuteEventHandler);
     ExecutedEvent.AddClassHandler <IRoutedCommandBindable>(ExecutedEventHandler);
 }

Esempio n. 2

 protected override bool CanExecuteCore(object parameter)
 {
     // 没有事件则默认为可执行
     // 无try-catch的强转性能比is和as好
     return(CanExecuteEvent?.Invoke((T)this, parameter) ?? true);
 }

Esempio n. 3

File: EventCommand.cs Progetto: sanec38/MathCore.WPF

 /// <inheritdoc />
 public override bool CanExecute(object parameter) => base.CanExecute(parameter) && (CanExecuteEvent?.Invoke(parameter) ?? CanExecuteIfEventNotDefined);