INotifyPropertyChanged for model and viewmodel

Question

I am currently away from home (and will be for a few more weeks) and only have a tablet - therefore, I have no access to Visual Studio to test what I\'m trying to learn - the

Answer 1

No, they don't have to share anything. However the implementation of INotifyPropertyChanged is some lines of code, so we usually made a base class for models - like BaseModel or BaseViewModel which implemented INotifyPropertyChanged.

The implementations are generally specific to the version of C# language you use (the older ones works in the newer version of language).

Look here: http://jesseliberty.com/2012/06/28/c-5making-inotifypropertychanged-easier/

but instead of having the Employee class to implement the INotifyPropertyChanged, you can implement it in a base class

public class BaseViewModel : INotifyPropertyChanged
{

    public event PropertyChangedEventHandler PropertyChanged;
    protected void RaisePropertyChanged([CallerMemberName] string caller = "")
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(caller));
        }
    }
}

and then the Employee class from the blog should look like this

public class Employee : BaseViewModel
{
    private string _name;
    public string Name
    {
        get { return _name; }
        set
        {
            _name = value;
            RaisePropertyChanged();
        }
    }
}

this is for C# 5 (the .Net 4.5 - the one which does not run on Windows XP)