using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        List<Dictionary<string, object>> list = new List<Dictionary<string, object>>();

        Dictionary<string, object> dictionary = new Dictionary<string, object>();

        dictionary.Add("INVOICE_DATE", "2/29/2016");

        Dictionary<string, object> dictionary1 = new Dictionary<string, object>();

        dictionary1.Add("INVOICE_DATE", "2/13/2016");

        list.Add(dictionary);

                list.Add(dictionary1);

​

        foreach (var item in list)

        {

            foreach (var key in item.Keys)

            {

                var culture = System.Globalization.CultureInfo.CurrentUICulture;

                DateTime dt = Convert.ToDateTime(item[key].ToString());

                Console.WriteLine(dt.ToString("dd/MM/yyyy"));

            }

        }

    //string date = "01/26/16";

    }

}