Check if a SortedList object contains a specific key in CSharp

using System;//  ww w.  j a  v a 2 s .  c  o  m
using System.Collections;

public class SamplesSortedList  {

   public static void Main()  {
      SortedList mySL = new SortedList();
      mySL.Add( 2, "two" );
      mySL.Add( 4, "four" );
      mySL.Add( 1, "one" );
      mySL.Add( 3, "three" );
      mySL.Add( 0, "zero" );

      int myKey = 2;
      Console.WriteLine(mySL.ContainsKey( myKey ));
   }
}