questions/47119821/net-system-datetime-tolocaltime-returns-invalid-local-time-value

CSharp · Console

/Program.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.Serialization.Formatters;
using System.IO;
using System.Data;
using System.ComponentModel.DataAnnotations;
using System.Globalization;
using System.Xml;

using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using Newtonsoft.Json.Converters;
using Newtonsoft.Json.Serialization;	

// https://stackoverflow.com/questions/47119821/net-system-datetime-tolocaltime-returns-invalid-local-time-value

	public class RootObject
	{
		public DateTime foo { get; set; }
	}

    class TestClass
    {
        public static void Test()
        {
            var json = GetJson();
            Console.WriteLine("Input JSON: ");
            Console.WriteLine(json);

            foreach (DateTimeZoneHandling handling in Enum.GetValues(typeof(DateTimeZoneHandling)))
            {
                Console.WriteLine("\nTesting DateTimeZoneHandling.{0}:", handling);

                var settings = new JsonSerializerSettings
                {
                    DateTimeZoneHandling = handling,
                };

                var root = JsonConvert.DeserializeObject<RootObject>(json, settings);

                Console.WriteLine("foo.Kind = {0}, Round-trip XML value = {1}, UTC XML value = {2}",
                                  root.foo.Kind,
                                  XmlConvert.ToString(root.foo, XmlDateTimeSerializationMode.RoundtripKind),
                                  XmlConvert.ToString(root.foo, XmlDateTimeSerializationMode.Utc));
                var newJson = JsonConvert.SerializeObject(root);
                Console.WriteLine(newJson);

            }

            Console.WriteLine("\nDone testing.");
        }
		
		static string GetJson()
		{
			var json = @"{
    ""foo"": ""2017-11-05T08:30:00""
}";
			return json;
		}
	}


	public class Program
	{
		public static void Main()
		{
			Console.WriteLine("Environment version: " + Environment.Version);
			Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);
			Console.WriteLine();

			try
			{
				TestClass.Test();
			}
			catch (Exception ex)
			{
				Console.WriteLine("Failed with unhandled exception: ");
				Console.WriteLine(ex);
				throw;
			}
		}
	}

    public class AssertionFailedException : System.Exception
    {
        public AssertionFailedException() : base() { }

        public AssertionFailedException(string s) : base(s) { }
    }

    public static class Assert
    {
        public static void IsTrue(bool value)
        {
            IsTrue(value, "failed");
        }

        public static void IsTrue(bool value, string message)
        {
            if (value == false)
                throw new AssertionFailedException(message ?? "failed");
        }
    }