.net - Assigning property of ViewModel to property of another ViewModel in C# WPF desktop app -

.net - Assigning property of ViewModel to property of another ViewModel in C# WPF desktop app -

i'm developing c# wpf mvvm app. i'm new to mvvm , not using toolkits/libraries, actioncommand class implements icommand interface , baseinpc class implements inotifypropertychanged (my viewmodels derive class).

my model has dataset class string inputpath property (the location of dataset file).

in mainview, have menu on top view of it's own (menuview), implemented using usercontrol has it's datacontext set it's corresponding menuviewmodel. each menu item bound actioncommand basic io operations, such openfiledialogs loading files etc. menuviewmodel has selectedpath property holding location of file.

my problem this: when select file using menuview (i.e. setting selectedpath property in menuviewmodel), want set dataset.inputpath selectedpath. dataset class instantiated in mainviewmodel, not menuviewmodel, pretty much i'm stuck.

is approach correct? if so, how can dataset.inputpath (in mainviewmodel) set selectedpath (of menuviewmodel)?

if insist on not using mvvm framework need write own message bus implementation...

otherwise, virtually mvvm frameworks utilize message bus type of inter-vm communication picking nice noob friendly mvvm framework (i'd recommend simple mvvm toolkit or mvvm light) , utilizing message bus instead of reinventing wheel , writing own mb way go.

c# .net wpf mvvm