ObliterateFolders

using System;
using System.Collections.Generic;

namespace ObliterateFolders {
	class MainClass {
		public static void Main(string[] args) {
			TraverseTree(args[0]);

			Console.WriteLine("Press any key");
			Console.ReadKey();
		}

		public static void TraverseTree(string root) {

			Stack<string> dirs = new Stack<string>(20);

			if (!System.IO.Directory.Exists(root)) {
				throw new ArgumentException();
			}
			dirs.Push(root);

			while (dirs.Count > 0) {
				string currentDir = dirs.Pop();
				string[] subDirs;
				try {
					subDirs = System.IO.Directory.GetDirectories(currentDir);
				}
				catch (UnauthorizedAccessException e) {
					Console.WriteLine(e.Message);
					continue;
				} catch (System.IO.DirectoryNotFoundException e) {
					Console.WriteLine(e.Message);
					continue;
				}

				foreach (string str in subDirs) {
					if (str.EndsWith("obj", StringComparison.Ordinal)) {
						Console.WriteLine(str);
						System.IO.Directory.Delete(str, true);
					}
					if (str.EndsWith("bin", StringComparison.Ordinal)) {
						Console.WriteLine(str);
						System.IO.Directory.Delete(str, true);
					}
					dirs.Push(str);
				}
			}
		}
	}
}