Question

I have a collection, That needs to be ordered in the order it is created.

But then at any time The User can change the order (ie move the 4th item to the first postion)

Is there any Collections with pre-built methods?

or should I use a SortedList.

Add(key++, Object);  //pseudo code

then to change item

SwapObject(int key, int SwapKey)
{
where key == value
   tempvalue = key;
   SwapKey = key;
   key = tempvalue;
}

Answer 1

You can use a generic List<> which has the Insert method, so you can insert an object in a given position any time.