INotifyPropertyChangedを極力隠蔽する実験の産物。

ViewModelBase.cs

using System;
using System.ComponentModel;
using System.Collections;

namespace SampleProject
{
    public class ViewModelBase : INotifyPropertyChanged
    {
        private Hashtable properties;
        public event PropertyChangedEventHandler PropertyChanged;

        protected ViewModelBase()
        {
            this.properties = new Hashtable();
        }

        protected void SetProperty<T>(T value, [CallerMemberName] string propertyName = "")
        {
            properties[propertyName] = value;
        }

        protected T GetProperty<T>([CallerMemberName] string propertyName = "", RequireClass<T> require = null) where T : class
        {
            return properties[propertyName] as T;
        }

        protected T GetProperty<T>([CallerMemberName] string propertyName = "", RequireStruct<T> require = null) where T : struct
        {
            var property = properties[propertyName];
            try
            {
                return (T)property;
            }
            catch
            {
                return default(T);
            }
        }

        protected void OnPropertyChanged([CallerMemberName] string name = "")
        {
            PropertyChanged.Invoke(this, new PropertyChangedEventArgs(name));
        }
    }

    //Genericsでstructとclassでオーバーロードするためのハック
    public class RequireStruct<T> where T : struct { }
    public class RequireClass<T> where T : class { }
    
    //使用サンプル
    public class SampleVM : ViewModelBase
    {
        string Title
        {
            get { return GetProperty<string>(); } //型指定が必要なのがつらい
            set { SetProperty(value); }
        }
    }
}