ObjectBase

public abstract class ObjectBase : INotifyPropertyChanged
   2:      {
   3:          public event PropertyChangedEventHandler PropertyChanged;
   4:   
   5:          protected internal void OnPropertyChanged(string propertyName)
   6:          {
   7:              if (this.PropertyChanged != null)
   8:                  this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
   9:          }
  10:   
  11:          protected virtual void OnPropertyChanged<T>(Expression<Func<T>> propertyExpression)
  12:          {
  13:              var propertyName = ExtractPropertyName(propertyExpression);
  14:              OnPropertyChanged(propertyName);
  15:          }
  16:   
  17:          static string ExtractPropertyName<T>(Expression<Func<T>> propertyExpression)
  18:          {
  19:              if (propertyExpression == null)
  20:              {
  21:                  throw new ArgumentNullException("propertyExpression");
  22:              }
  23:   
  24:              var memberExpression = propertyExpression.Body as MemberExpression;
  25:              if (memberExpression == null)
  26:                  throw new Exception();
  27:   
  28:              var property = memberExpression.Member as PropertyInfo;
  29:              if (property == null)
  30:                  if (memberExpression == null)
  31:                      throw new Exception();
  32:   
  33:              var getMethod = property.GetGetMethod(true);
  34:              if (getMethod.IsStatic)
  35:                  if (memberExpression == null)
  36:                      throw new Exception();
  37:   
  38:              return memberExpression.Member.Name;
  39:          }
  40:      }