Use the ContainsKey() method to check if mySortedList contains a key : Generic SortedList : Generic C# Examples

    
using  System;
using  System.Collections;

class  MainClass
{

    public  static  void  Main()
    {
        SortedList  mySortedList  =  new  SortedList();

        mySortedList.Add("NY",  "New  York");
        mySortedList.Add("FL",  "Florida");
        mySortedList.Add("AL",  "Alabama");
        mySortedList.Add("WY",  "Wyoming");
        mySortedList.Add("CA",  "California");

        foreach  (string  myKey  in  mySortedList.Keys)
        {
            Console.WriteLine("myKey  =  "  +  myKey);
        }

        foreach(string  myValue  in  mySortedList.Values)
        {
            Console.WriteLine("myValue  =  "  +  myValue);
        }
        
        if  (mySortedList.ContainsKey("FL"))
        {
            Console.WriteLine("mySortedList  contains  the  key  FL");
        }
    }
}