[Solved] ShowDialog - MVVM

[Tim]

I'm using MVVM design pattern and trying to access ShowDialog of the RadScheduleView.
I have the following set up:

<UserControl  xmlns:viewModels="clr-namespace:Scheduler.ViewModels">

<UserControl.Resources>
        <viewModels:MainPageViewModel x:Key="ViewModel" />
...
</UserControl.Resources>


<telerik:RadScheduleView telerik:StyleManager.Theme="Office_Silver"
   x:Name="radScheduleView"
   Grid.Column="1"
   Grid.Row="0"
   ShowDialog="RadScheduleView_ShowDialog">

I placed RadScheduleView_ShowDialog in MainPageViewModel.cs but it cannot find it.

What do I need to do to get this working?

[Yana]

Hi Tim,

ShowDialog is an event, not a command and cannot be handled in the ViewModel like this. I would suggest to check our Event To Command tutorial and choose one of the approaches explained there.

Regards,
Yana
the Telerik team

[Tim]

I found an example that uses the following namespaces

xmlns:ins="http://schemas.microsoft.com/expression/2010/interactions"
xmlns:iny="http://schemas.microsoft.com/expression/2010/interactivity"

instead of

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

Both use triggers but the example I found relies on creating the following in the ViewModel:

private ICommand showDialog;
private ICommand ShowDialog
{
     get
     {
          return this.showDialog;
     }
     set
     {
          this.showDialog = value;
     }
}



public void OnShowDialog(object sender, ShowDialogEventArgs e)
{
}

Which method is preferred? It works with this code but is not the same as the references you sent.

Thanks

[Yana]

Hi Tim,

Our tutorial is just an example how to handle events in the ViewModel, it is not the only way.  As your current solution is working, there is no reason to change it.

As to the namespaces - you can find more information about XAML namespaces here.

Greetings,
Yana
the Telerik team