C# 读写Josn文件

Nuget安装Newtonsoft后，引入命名空间：
using Newtonsoft.Json;

/// <summary>
/// 读取Josn文件为Model对象
/// </summary>
/// <typeparam name="T">Model对象类型</typeparam>
/// <param name="jspath">Josn文件路径(含【文件名】与【扩展名】)</param>
/// <param name="dm">Model对象</param>
/// <returns>true：读取成功；false：读取失败</returns>
public static bool ReadJson<T>(string jspath, out T dm)
{
    if (File.Exists(jspath))
    {
        string jstr = File.ReadAllText(jspath);
        dm = JsonConvert.DeserializeObject<T>(jstr);
        return true;
    }
    else
    {
        dm = default;
        return false;
    }
}
/// <summary>
/// 将Model对象写出为Josn文件
/// </summary>
/// <typeparam name="T">Model对象类型</typeparam>
/// <param name="dm">Model对象</param>
/// <param name="jspath">Josn文件路径(含【文件名】与【扩展名】)</param>
/// <returns>true：写出成功；false：写出失败</returns>
public static bool WriteJson<T>(T dm, string jspath)
{
    if (Directory.Exists(Path.GetDirectoryName(jspath)))
    {
        string jstr = JsonConvert.SerializeObject(dm);
        File.WriteAllText(jspath, jstr);
        return true;
    }
    else return false;
}