Shuffling a deck of cards

[vandel212]

I'm having an issue tyring to write a program that will shuffle multiple decks of cards like at a casino. I have assigned each card an ID in an array, so:
1 = 2 of dimonds
2 = 2 of hearts
3 = 2 of clubs
.
.
.
52 = Ace of spades

What I'm doing is generating a random number between 1 and 52 and filling an array with the random number which will be the card ID. I have it do a for each loop to search the array to see if the random number chosen is already in there. If it is, it breaks the loop and tries again.

There are no issues as far as errors are concerned, but it's incredibly inefficient. with 1 deck it doesn't long, but if there are 10 decks, the array size is 520 and it has to do the loop minimum 520 times. So it can take quite a bit of time to complete.

Is there a more efficient way of doing this?

Here is my code for shuffling:

private void ShuffleDeck()
        {
            CardOrder = new int[52];

            do
            {
                Random RandomNumber = new Random();
                int CardID = RandomNumber.Next(1, 53);
                bool UsedCard = true;

                foreach (int IDNumber in CardOrder)
                {
                    if (CardID == IDNumber)
                    {
                        UsedCard = true;
                        break;
                    }
                    else
                    {
                        UsedCard = false;
                    }
                }
                if (UsedCard == false)
                {
                    string cardcall = (CardListing[CardID - 1, 1]);
                    CardOrder[CardOrderIndex] = CardID;
                    listBox1.Items.Add((CardOrderIndex + 1).ToString() + ": " + CardListing[CardID - 1,1]);
                    CardOrderIndex++;
                }
            }
            while (CardOrderIndex < 52);
            CardOrderIndex = 0;
        }