public bool Remove(T item)
{
var arg = new ItemPropretyChangindEvenArgs <T>(item);
if (arg.Cancel)
{
OnPropretyChanging(arg);
}
OnPropretyChanged(new ItemPropretyChangindEvenArgs <T>(item));
return(_list.Remove(item));
}
public bool Contains(T item)
{
var arg = new ItemPropretyChangindEvenArgs <T>(item);
if (arg.Cancel)
{
OnPropretyChanging(arg);
return(false);
}
OnPropretyChanged(new ItemPropretyChangindEvenArgs <T>(item));
return(_list.Contains(item));
}
public void Add(T item)
{
var arg = new ItemPropretyChangindEvenArgs <T>(item);
if (arg.Cancel)
{
OnPropretyChanging(arg);
return;
}
OnPropretyChanged(new ItemPropretyChangindEvenArgs <T>(item));
_list.Add(item);
}
protected virtual void OnPropretyChanging(ItemPropretyChangindEvenArgs <T> e)
{
PropretyChanging?.Invoke(this, e);
}
