protected virtual void OnPropertyChanged <T>(Expression <Func <T> > expression, ref T oldValue, T newValue) where T : IComparable <T>
{
if (oldValue == null && newValue == null)
{
return;
}
if (oldValue != null && (oldValue.Equals(newValue) || oldValue.CompareTo(newValue) == 0))
{
return;
}
if (oldValue == null || oldValue.ToString() != newValue.ToString())
{
if (oldValue != null)
{
this.AddChangs(Propertyname.GetProperty(expression).Name, oldValue, newValue);
}
oldValue = newValue;
this.HasModelChanged = true;
this.OnPropertyChanged(Propertyname.GetProperty(expression).Name);
}
}
protected void OnPropertyChanged <T>(Expression <Func <T> > expression)
{
if (expression == null)
{
throw new ArgumentNullException(nameof(expression));
}
OnPropertyChanged(Propertyname.GetProperty(expression).Name);
}
protected void OnPropertyChanged <T>(Expression <Func <T> > expression)
{
this.OnPropertyChanged(Propertyname.GetProperty(expression).Name);
}