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Difference between lambda syntax and VB.NET address

I recently entered the joyous world of VB.NET, but for the life of me, I don't seem to figure out why the following isn't working.

When I write this code here, everything is fine:

MyNavigationCommand = New RelayCommand(AddressOf Navigate)

Private Sub Navigate()
    Navigator.NavigateTo(NavigationRoutes.DetailScreen)
End Sub

However, when I try to do the same using the lambda syntax, my code inside the lambda doesn't get hit when I click the button that runs the command.

The following line doesn't work:

MyNavigationCommand = New RelayCommand(Sub() Navigator.NavigateTo(NavigationRoutes.DetailScreen))

This should work exactly the same as my previous approach, right? Or am I missing something?

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1 answer


I'm not sure what is wrong for you. This is my code I wrote to test this:

Sub Main

    Dim MyNavigationCommand = New RelayCommand(AddressOf Navigate)
    Dim MyNavigationCommand2 = New RelayCommand(Sub() Console.WriteLine("!"))

    Navigate
    MyNavigationCommand
    MyNavigationCommand2

End Sub

Public Delegate Sub RelayCommand

Public Sub Navigate()
    Console.WriteLine("!")
End Sub


Running this code produces three lines !

.

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