Is there an alternative to Dictionary/SortedList that allows duplicates? [duplicate]

Answer 1

You still can use SortedList and try to make a unique key by combining your value and a Guid into a class. In this case, you must implement the IComparer for your new key, something like:

class MyKey
{
    public Guid Guid { get; set; }
    public float Value { get; set; }
}

class MyComparer : IComparer
{

    public int Compare(MyKey x, MyKey y)
    {
        if (x == null || y == null)
            throw new InvalidOperationException("both of parameters must be not null");
        if (x.Value < y.Value) return -1;
        if (x.Value > y.Value) return 1;
        return 0;
    }
}

and then

var mySortedList = new SortedList(new MyComparer());