Deserializes/serializes objects to output files as JSON. Built on top of C# 6, requires Json.NET

ObjectFileResourceController.cs

using Newtonsoft.Json;
using System.IO;
using System.Text;

// TODO: Namespace

/// <summary>
/// De- or serializes objects to output files as JSON. 
/// </summary>
/// <typeparam name="T">Object type to save or load</typeparam>
public static class ObjectFileResourceController<T>
{
    public static void SaveObjectToFile(T obj, string filePathName)
    {
        FileInfo ensureInfo = new FileInfo(filePathName);
        EnsureFileSystemSetup(ensureInfo.Directory.FullName);
        using (var writer = new StreamWriter(new FileStream(filePathName, FileMode.Create), Encoding.Unicode))
        {
            writer.Write(JsonConvert.SerializeObject(obj));
        }
    }

    public static T LoadObjectFromFile(string filePathName)
    {
        FileInfo ensureInfo = new FileInfo(filePathName);
        EnsureFileSystemSetup(ensureInfo.Directory.FullName, ensureInfo.Name);
        using (var reader = new StreamReader(new FileStream(filePathName, FileMode.Open)))
        {
            return JsonConvert.DeserializeObject<T>(reader.ReadToEnd());
        }
    }

    public static void EnsureFileSystemSetup(string filePath, string fileName = "")
    {
        bool isFileNameSpecified = !string.IsNullOrEmpty(fileName);
        if (isFileNameSpecified)
            fileName = @"\" + fileName;

        FileInfo info = new FileInfo($"{filePath}{fileName}");
        if (!Directory.Exists(info.Directory.FullName))
            Directory.CreateDirectory(info.Directory.FullName);

        if (isFileNameSpecified)
        {
            if (!File.Exists(info.FullName))
                File.WriteAllText(info.FullName, "");
        }
    }
}