public void Insert(ref Phonebook pb, int index, string name, int number)
{
int i = 0;
foreach (Phonebook item in pb)
{
if (i == index)
{
item.name = name;
item.number = number;
return;
}
i++;
}
}
public void RemoveAt(ref Phonebook pb, int index)
{
int i = 0;
Phonebook _root = (Phonebook)pb.Clone();
foreach (Phonebook person in _root)
{
if (i == index)
{
pb = person.Next;
return;
}
pb = pb.Next;
i++;
}
}
public void Add(string name, int number)
{
if (Count == 0)
{
this.name = name;
this.number = number;
Count++;
_last = this;
}
else
{
_last.Next = new Phonebook {
name = name, number = number
};
_last = _last.Next;
Count++;
}
}
public Enumerator(Phonebook pb)
{
this.pb = pb;
}