Json.NET未序列化到文件

Question

Even using an example from the Documentation , I still can't find a way to successfully serialize to a file.

Code:

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
using System.IO;
using System.Threading;

namespace TestProject
{
    class Program
    {
        static void Main(string[] args)
        {
            Item i = new Item
            {
                Username = "user",
                Email = "user@user.com",
                Password = "password"
            };


            File.WriteAllText(@"C:\users\user1.json", JsonConvert.SerializeObject(i));

            using (StreamWriter file = File.CreateText(@"C:\users\user1.json"))
            {
                JsonSerializer serializer = new JsonSerializer();
                serializer.Serialize(file, i);
            }

        }
    }
}

Item.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace TestProject
{
    public class Item
    {
        public string Email { get; set; }
        public string Password { get; set; }
        public string Username { get; set; }
    }
}

When I run Program.cs, it shows no errors, but the JSON does not show in the file.

Answer 1

When I run your code I get a an exception writing to the users folder. Changing to my home folder works fine. I suspect this is your problem.

Addtionally, you're writing the file twice. The first time is showing an example of using the SerializeObject method to get a string back which is used with WriteAllText. The second block of code is using a StreamWriter. For your purposes, both are equivalent and you only need to use one or the other.

Answer 2

        using (StreamWriter file = File.CreateText(@"C:\users\user1.json"))
        {
            var jsonResult = JsonConvert.SerializeObject(i);
            file.WriteLine(jsonResult);
        }