Use byte[] as key in dictionary

Question

I need to use a byte[] as a key in a Dictionary. Since byte[] doesn\'t override the default GetHashCode method, two sepa

Answer 1

When you are retrieving the items from the Dictionary you are using new operator for the byte[]. This will look for a different (new) byte[] instance in the Dictionary which is not present.

Here is a solution that will work:

 var dict = new Dictionary();

            var b = new byte[] { 1,2,3};

            dict[b] = "my string";

            var value = dict[b]; 

            Console.WriteLine(value);