‫آشنایی با Refactoring - قسمت 6

using System.ComponentModel;

namespace Refactoring.Day6.ExtractSuperclass.Before
{
    public class User : INotifyPropertyChanged
    {
        string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                if (_name == value) return;
                _name = value;
                raisePropertyChanged("Name");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
        void raisePropertyChanged(string propertyName)
        {
            var handler = PropertyChanged;
            if (handler == null) return;
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

using System.ComponentModel;

namespace Refactoring.Day6.ExtractSuperclass.After
{
    public class ViewModelBase : INotifyPropertyChanged
    {
        public event PropertyChangedEventHandler PropertyChanged;
        protected void RaisePropertyChanged(string propertyName)
        {
            var handler = PropertyChanged;
            if (handler == null) return;
            handler(this, new PropertyChangedEventArgs(propertyName));
        }
    }
}

namespace Refactoring.Day6.ExtractSuperclass.After
{
    public class User : ViewModelBase
    {
        string _name;
        public string Name
        {
            get { return _name; }
            set
            {
                if (_name == value) return;
                _name = value;
                RaisePropertyChanged("Name");
            }
        }
    }
}