Select x random elements from a weighted list in C# (without replacement)

Question

Update: my problem has been solved, I updated the code source in my question to match with Jason\'s answer. Note that rikitikitik answer is solving the issu

Answer 1

You could do this:

Card GetCard(List cards)
{
  int total = 0;
  foreach (Card c in cards)
  {
    total += AttributionRate;
  }

  int index = Random.Next(0, total - 1);
  foreach(Card c in cards)
  {
    index -= c.AttributionRate;
    if (index < 0)
    {
      return c;
    }
  }
}

Card PopCard(List cards)
{
  Card c = GetCard(cards);
  cards.Remove(c);
}

In theory this should work.