using System; 

  using System.Collections.Generic;

public class TEST { 

   static public void Main(string[] args)

    {

        var test =  new Dictionary<int, string>();

        test.Add(1,"One");

        Console.WriteLine(test); //outputs test

        Console.WriteLine(TEST.TestMethod(test));  //outputs slab

    }

​

    static public string TestMethod(  dynamic obj)

    {

        foreach (KeyValuePair<int, string> item in obj)

{

    Console.WriteLine("Key: {0}, Value: {1}", item.Key, item.Value);

        return item.Value;

}

        return "";

    }

}