Entity screens are set to as ‘Ask Ticket Type’
With selecting entity:
Without selecting entity:
Exception:
Top-level Exception
Type: System.Reflection.TargetInvocationException
Message: Exception has been thrown by the target of an invocation.
Source: mscorlib
Stack Trace: at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
Inner Exception 1
Type: System.NullReferenceException
Message: Object reference not set to an instance of an object.
Source: Samba.Presentation.ClientLibrary
Stack Trace: at Samba.Presentation.ClientLibrary.Modules.PosModule.PosViewModel.OnEntitySelectedForTicket(EventParameters`1 eventParameters) in C:\Users\Vehbi\Documents\Source\Repos\sambapos-v5-pro\Samba.Presentation.ClientLibrary\Modules\PosModule\PosViewModel.cs:line 298
at Microsoft.Practices.Prism.Events.EventSubscription`1.InvokeAction(Action`1 action, TPayload argument)
at Microsoft.Practices.Prism.Events.EventSubscription`1.<>c__DisplayClass2.<GetExecutionStrategy>b__0(Object[] arguments)
at Microsoft.Practices.Prism.Events.EventBase.InternalPublish(Object[] arguments)
at Microsoft.Practices.Prism.Events.CompositePresentationEvent`1.Publish(TPayload payload)
at Samba.Presentation.Services.Common.ExtensionMethods.Publish[TEventsubject](TEventsubject eventArgs, String eventTopic, Action expectedAction)