C# : how to accept two generic parameters

我有一个函数，我想将下面的 Ping 和 Pong 转换为通用类型。是否可以？

private Pong ReadDataFromApi(string url, Ping data)
{
    string url = "URL_TO_HIT";

    WebResponse response = Util.SendWebRequest<Ping>(url, data, 30000);

    var res = new Pong();
    if (response != null)
    {
        using (var reader = new StreamReader(response.GetResponseStream()))
        {
            var objText = reader.ReadToEnd();
            res = JsonConvert.DeserializeObject<Pong>(objText);
        }
    }
    return res;
}

我可以转换为以下内容:

private T ReadDataFromApi(string url, T data)  T : class
{
    string url = "URL_TO_HIT";

    WebResponse response = Util.SendWebRequest<T>(url, data, 30000);

    var res = new Pong();
    if (response != null)
    {
        using (var reader = new StreamReader(response.GetResponseStream()))
        {
            var objText = reader.ReadToEnd();
            res = JsonConvert.DeserializeObject<Pong>(objText);
        }
    }
    return res;
}

不确定如何接受 Pong 作为通用参数。

最佳答案

这样的事情应该工作:

private TPong ReadDataFromApi<TPing, TPong>(string url, TPing data)
    where TPing : class
    where TPong : class,new() //You need to create instances of TPong
{
    WebResponse response = Util.SendWebRequest<TPing>(url, data, 30000);

    var res = new TPong(); //Create instance of TPong
    if (response != null)
    {
        using (var reader = new StreamReader(response.GetResponseStream()))
        {
            var objText = reader.ReadToEnd();
            res = JsonConvert.DeserializeObject<TPong>(objText);
        }
    }

    return res;
}

关于C# : how to accept two generic parameters，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/37348271/