c# - Is it possible to get a NullReferenceException with a null coalescing operator and a 'as'? -

i'm moniterring application , got a...

nullreferenceexception object reference not set instance of object.

the stack trace points accurately line of code :

 this.modelcontrol = this.modelcontrol creeretablissementmodel ?? new creeretablissementmodel(); 

is possible this.modelcontrol creeretablissementmodel throw exception before doing ?? ?

edit

by request... you'll need class member (it's inherited in case)

    private const string modelcontrol = "modelcontrol";     public object modelcontrol     {         { return (object)httpcontext.current.session[modelcontrol] ?? new object(); }         set { httpcontext.current.session[modelcontrol] = value; }     } 

no, not possible as in combination null coalescing operator throws nullreferenceexception.

the exception originates within property. either httpcontext.current or httpcontext.current.session null.

you can check setting break point in getter of property.