protected virtual void OnPropertyChanging(PropChangingEventArgs e)
{
if (PropertyChanging != null)
{
PropertyChanging(this, e);
}
}
protected override void SetPropertyField <T>(string propertyName, ref T field, T newValue)
{
if (!EqualityComparer <T> .Default.Equals(field, newValue))
{
var ff = new PropChangingEventArgs(propertyName, field, newValue);
OnPropertyChanging(ff);
if (!ff.cancel)
{
newValue = (T)ff.NewValue;
if (!EqualityComparer <T> .Default.Equals(field, newValue))
{
field = newValue;
DoPropChange(propertyName);
}
}
}
}