How to have Multiple unique instances of ViewModel using MVVM Light?

Question

I am fairly new to following the MVVM pattern. I am using MVVMLight. I am wondering how have multiple unique instances of the ViewModel with MVVM Light. For exmaple I have an application that can open n number of windows. Each uses the same Viewmodel. I am curious in MVVM whats the best practive to give them there own instance.

If I follow the MVVM Light example the ViewModeLocator will have only a static instance which each window will end up using.

Thanks in advance.

Answer 1

Easy:

public EndingViewModel EndingViewModel
{
    get 
    { 
      return ServiceLocator.Current.GetInstance<EndingViewModel>(Guid.NewGuid().ToString()); 
    }
}

When resolving from the ServiceLocator make sure the call to GetInstance passes in a unique value to the method. In the above example I pass in a guid.

I really wouldn't build your objects manually as this defeats the point of having the Dependency Injection container in MVVM Light.