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WPF ICommand vs RoutedCommand

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问题 Let's have a button Command property bound to a custom command. When should I implement ICommand and when derive from RoutedCommand ? I see that RoutedCommand implements ICommand . In which case could I need to iplement an ICommand ? What about MVVM model? Which one suits better for this purpose? 回答1: As you have noticed the RoutedCommand class is an implementation of the ICommand interface, its main distinction if that its function is similar to that of a RoutedEvent : The Execute and

WPF: Routing usercontrol command to Mainwindow

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问题 I must confess I have problems understanding the way wpf works. I have a usercontrol BottomControl nested in my Mainwindow . If a Button in BottomControl is clicked I want certain changes in my Mainwindow (changing content of a textbox for example) to occur. The easy thing to do is obviously to just call a public procedure in the Click_Event but this is not quite elegant. I got so far as to use RoutedCommands. public static readonly RoutedCommand BottomGridReSize = new RoutedCommand(); In

Setting Command Target in XAML

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问题 I am having a hard time understanding the CommandTarget property for a RoutedCommand. Basically, I have some static commands that have implementations in a user control (not the window). I create a commandbinding in the user control. If I declare the button in the usercontrol, then I am able to use my routed event. However, when the button is outside of the usercontrol, then I cannot use my routed event. I think the command target will solve my issue. So how do I set the commandtarget for the

WPF ICommand vs RoutedCommand

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Let's have a button Command property bound to a custom command. When should I implement ICommand and when derive from RoutedCommand ? I see that RoutedCommand implements ICommand . In which case could I need to iplement an ICommand ? What about MVVM model? Which one suits better for this purpose? Richard McGuire As you have noticed the RoutedCommand class is an implementation of the ICommand interface, its main distinction if that its function is similar to that of a RoutedEvent : The Execute and CanExecute methods on a RoutedCommand do not contain the application logic for the command as is

MVVM Routed and Relay Command

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What is the Difference between the RoutedCommand and RelayCommand ? When to use RoutedCommand and when to use RelayCommand in MVVM pattern ? wekempf RoutedCommand is part of WPF, while RelayCommand was created by a WPF Disciple, Josh Smith ;). Seriously, though, RS Conley described some of the differences. The key difference is that RoutedCommand is an ICommand implementation that uses a RoutedEvent to route through the tree until a CommandBinding for the command is found, while RelayCommand does no routing and instead directly executes some delegate. In a M-V-VM scenario a RelayCommand

MVVM Routed and Relay Command

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问题 What is the Difference between the RoutedCommand and RelayCommand ? When to use RoutedCommand and when to use RelayCommand in MVVM pattern ? 回答1: RoutedCommand is part of WPF, while RelayCommand was created by a WPF Disciple, Josh Smith ;). Seriously, though, RS Conley described some of the differences. The key difference is that RoutedCommand is an ICommand implementation that uses a RoutedEvent to route through the tree until a CommandBinding for the command is found, while RelayCommand