我如何检查彩带直播？

问题描述

我想制作一个程序来检查彩带是否直播。我试图自己做，但是出了点问题。 这是代码

static HttpClientHandler hcHandle = new HttpClientHandler();

    static async Task<bool> IsOnline(string channel)
    {
        using (var hc = new HttpClient(hcHandle,false))
        {
            hc.DefaultRequestHeaders.ExpectContinue = false;
            hc.DefaultRequestHeaders.Add("Client-ID","xn8q3fkcx5fh6mhkffn2md4to8c9m8");
            hc.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("usainsrht","oauth:c159s6yw4ok1ywu0kjkeyrucr2x1kz");
            hc.Timeout = TimeSpan.FromSeconds(15);
            using (var response = await hc.GetAsync($"https://api.twitch.tv/helix/streams?user_login={channel}"))
            {
                response.EnsureSuccessStatusCode();
                string jsonString = await response.Content.ReadAsStringAsync();
                var r = JsonConvert.DeserializeObject<RootObject>(jsonString);
                if (!(r == default(RootObject)))
                {

                }
                else
                {
                    return true;
                }
            }
        }
        return false;
    }
    public async void pictureBox2_Click(object sender,EventArgs e)
    {
        bool is_valid = await IsOnline("StreamerName");
            if (is_valid == false)
            {
                MessageBox.Show("stream is offline");
            }
            else
            {
                MessageBox.Show("stream is online");
            }
    }

单击图片框2时出现此错误 An exception of type 'System.Net.Http.HttpRequestException' occurred in mscorlib.dll but was not handled in user code

在事件标签Activated Event Time Duration Thread Exception: Exception thrown: 'System.Net.Http.HttpRequestException' in mscorlib.dll ("An error occured while sending the request."). Exception thrown: 'System.Net.Http.HttpRequestException' in mscorlib.dll ("An error occured while sending the request.") 3.14s [4128] <No Name>

解决方法

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