using System;

​

using System.Globalization;

public class Program

{

    public static void Main()

    {

        Object dr = "2017-06-11T08:10:06.2212339 03:00";

        // this line below will throw FormatException, uncomment to show how exception being thrown

        // Console.WriteLine(Convert.ToDateTime(dr));

        String date = dr.ToString();

        date = date.Insert((date.Length - 5), "+");

        Console.WriteLine(date);

        DateTime? dateCreated = DateTime.ParseExact(date, "yyyy-MM-ddTHH:mm:ss.FFFFFFF zzzz", CultureInfo.InvariantCulture,

                                            DateTimeStyles.AdjustToUniversal);

        Console.WriteLine(dateCreated.Value);

        dateCreated = Convert.ToDateTime(date);

        Console.WriteLine(dateCreated.Value);

        dateCreated = Convert.ToDateTime(dr.ToString().Insert((date.Length - 6), "+"));

        Console.WriteLine(dateCreated.Value);

​

    }

}