pass parameter listview relaycommand

Question

Hello,

I get a cast error when trying to send my selected listviewitem with RelayCommand. I'm using the galasoft mvvm RelayCommand.

Error.

System.InvalidCastException: Unable to cast object of type 'Windows.UI.Xaml.Controls.ItemClickEventArgs' to type 'utmaningen.Models.CatModel'.
   at GalaSoft.MvvmLight.Command.RelayCommand`1.Execute(Object parameter)
   at Microsoft.Xaml.Interactions.Core.InvokeCommandAction.Execute(Object sender, Object parameter)
   at Microsoft.Xaml.Interactivity.Interaction.ExecuteActions(Object sender, ActionCollection actions, Object parameter)
   at Microsoft.Xaml.Interactions.Core.EventTriggerBehavior.OnEven

MainPage.xaml

<Core:InvokeCommandAction Command="{Binding RelayCmd}"
                                              CommandParameter="{Binding ElementName=CatsListview, Path=SelectedCat}"/>

CatsViewModel.cs

private RelayCommand<CatModel> _executeRelayCmd;
        public RelayCommand<CatModel> RelayCmd
        {
            get
            {
                return _executeRelayCmd?? (_executeRelayCmd= new RelayCommand<CatModel>(ExecuteCatCommand));
            }
        }

public void ExecuteCatCommand(CatModel _executeRelayCmd)
        {

//Want to get my listview selection info.

}

Answer 1

I would advise asking the Galasoft people about this.

---

Matt Small - Microsoft Escalation Engineer - Forum Moderator
If my reply answers your question, please mark this post as answered.

NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.

Answer 2

Thanks,

I solved this by getting the itemclick event args instead.