Using telerikInput:RadDataForm with PRISM MVVM

[UMP]

hi good days to all,

i go through example source code here  https://github.com/telerik/telerik-xamarin-forms-samples/blob/master/QSF/QSF/Examples/DataFormControl/ReservationsExample/DataFormView.xaml.cs

validation is done through code behind :

private void DoneButton_Clicked(object sender, EventArgs e)
        {
            this.dataForm.FormValidationCompleted += DataForm_FormValidationCompleted;
            this.dataForm.ValidateAll();
        }

I'm using command binding in button to call delegate command in mvvm.  Is it  possible to call ValidateAll() from within mvvm or specific method to achieve this ? 

[UMP]

   
private async void DataFormValidationCompleted(object sender, FormValidationCompletedEventArgs e)
        {
            if (e.IsValid)
            {
               
             // call method DCSubmit to submit data for backend using Refit.    
             var ctx =  (PrismDeathCompensationPageViewModel)this.BindingContext;
                ctx.DCSubmit();
            }
            
            
        }

i'm callling viewmodel method from codebehind and its working now.  prism:ViewModelLocator.AutowireViewModel="True"