gistfile1.txt

[Test]
		public void Foo()
		{
			var initialList = new List<int>();
			var list1 = new List<int>();
			var list2 = new List<int>();

			for(var i = 0; i < 100000; i++)
			{
				initialList.Add(i);
			}

			var sw1 = Stopwatch.StartNew();
			foreach(var item in initialList)
			{
				list1.Add(item);
			}
			sw1.Stop();
			Console.WriteLine(sw1.Elapsed.ToString());

			var sw2 = Stopwatch.StartNew();
			list2.AddRange(initialList);
			sw2.Stop();
			Console.WriteLine(sw2.Elapsed.ToString());
		}