Question

How to check whether a dictionary contains a key and get the value in C#

Answer 1

using System;
using System.Collections.Generic;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, int> dictionary = new Dictionary<string, int>();

            dictionary.Add("c#", 11);
            dictionary.Add("java", 13);
            dictionary.Add("c++", 15);
            dictionary.Add("python", 9);
            dictionary.Add("php", 8);

            if (dictionary.ContainsKey("c#"))
            {
                int value = dictionary["c#"];
                Console.WriteLine(value);
            }
            else
                Console.WriteLine("not contain");
        }
    }
}


/*
run:

11

*/

 

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