using System.Collections.Generic;
static Dictionary<int, int> something = new Dictionary<int, int>();
public static void Main()
for (int i = 0; i < 10; i++)
for (int j = 0; j < 10; j++)
foreach (var item in something)
Console.WriteLine(string.Format("{0}: {1}", item.Key, item.Value));
static void AddToDictionary(int id)
if (something.ContainsKey(id))
Console.WriteLine(string.Format("{0} already exists, incrementing count...", id));
something[id] = ++something[id];
Console.WriteLine(string.Format("{0} doesn't exist, adding it...", id));