C#通用函数返回类型

/// <summary>
/// 通用函数返回类型
/// </summary>
/// <typeparam name="T"></typeparam>
public class TodoResult<T> where T : class
{
    /// <summary>
    /// 结果(布尔型)
    /// </summary>
    public bool Result { get; set; }
    /// <summary>
    /// 结果(整型)
    /// </summary>
    public int Status { get; set; }
    /// <summary>
    /// 说明
    /// </summary>
    public string Message { get; set; }
    /// <summary>
    /// 返回数据
    /// </summary>
    public T Data { get; set; }

    /// <summary>
    /// 构造函数
    /// </summary>
    public TodoResult()
    {
        SetFail("");
    }

    /// <summary>
    /// 成功
    /// </summary>
    public void SetSuccess()
    {
        SetSuccess(null);
    }

    /// <summary>
    /// 成功
    /// </summary>
    /// <param name="obj"></param>
    public void SetSuccess(T obj)
    {
        Result = true;
        Status = 1;
        Message = "";
        Data = obj;
    }

    /// <summary>
    /// 失败
    /// </summary>
    /// <param name="err"></param>
    public void SetFail(string err)
    {
        SetFail(-1, err);
    }

    /// <summary>
    /// 失败
    /// </summary>
    /// <param name="stat"></param>
    /// <param name="err"></param>
    public void SetFail(int stat, string err)
    {
        Result = false;
        Status = stat;
        Message = err;
        Data = null;
    }
}