CODEWITHSUNDEEP
wpfmvvm
pchajer
pchajer

Reputation: 1584

Delegate Command and Routed Command

What is the Difference between the Delegate Command and Routed Command?

I read some article that says use Delegate Command on MVVM instead of Routed Command.

So What are the advantages of Delegate Command over Routed Command when we use MVVM?

Upvotes: 10

Views: 5330

Answers (2)

Josh Smith
Josh Smith

Reputation: 884

Some advantages of using a DelegateCommand (a.k.a. RelayCommand) are:

1) Requires less XAML/code to support them (don't need CommandBindings)

2) Command implementation code can easily be written in ViewModel classes

3) They do not take a dependency on the UI element tree to work properly, which also helps improve performance

Since a lot of third-party UI controls use routed commands, most developers end up using routed commands when taking a dependency on those controls.

If you end up needing to use routed commands, check out my Using RoutedCommands with a ViewModel in WPF article to see a way to simplify things.

Upvotes: 11

brunnerh
brunnerh

Reputation: 184516

RoutedCommands are as the name says, routed, that means they travel the VisualTree either up or down and check if there are CommandBindings for them. See the Routed Events Overview and Commanding Overview.

Also see the references for the respective classes:

DelegateCommand<T>
RoutedCommand

Upvotes: 3

Related Questions