public void add(CObject o)
{
if (count != 0)
{
CContainerItem c = new CContainerItem(o);
c.prev = last;
c.next = first;
first.prev = c;
last.next = c;
last=c;
current = last;
count = count + 1;
}
else
{
first = new CContainerItem(o);
last = first;
first.next = last;
first.prev = last;
last.next = first;
last.prev = first;
current = last;
count = count + 1;
}
}
public CContainer()
{
current = null;
first = null;
last = null;
count = 0;
}
public CContainerItem(CObject c)
{
prev = null;
next = null;
obj=c;
}
public void ShiftPrev()
{
current = current.prev;
}
public void ShiftNext()
{
current = current.next;
}
public void SaveContainer()
{
stream = new FileStream("file.txt",FileMode.Truncate,FileAccess.Write);
StreamWriter sw = new StreamWriter(stream);
current = first;
int ct = count;
sw.WriteLine(count);
sw.Flush();
while (ct != 0)
{
current.obj.SaveObject(stream);
ShiftNext();
ct = ct - 1;
}
stream.Close();
}
public void Remove()
{
if (count != 0)
{
if (current == first)
{
if (count == 1)
{
first = null;
current = null;
last = first;
count = 0;
}
else
{
first = first.next;
first.prev = last;
count = count - 1;
}
}
else
{
if (current == last)
{
if (count == 1)
{
first = null;
current = null;
last = first;
count = 0;
}
else
{
last = last.prev;
current = last;
last.next = first;
count = count - 1;
}
}
else
{
CContainerItem temp;
temp = current;
current = current.prev;
current.next = temp.next;
current = temp.next;
current.prev = temp.prev;
count = count - 1;
}
}
}
}