C# HttpClient post与get请求
using (var client = new HttpClient())
                {
                    var regInfo = await client.GetStringAsync("http://xxxxx/GetSoftRegModel?softName=帮派考勤记录器&mCode=" + mNum);
                    if (regInfo == "")
                    {
                        //插入
                        //MessageBox.Show("抱歉，您未注册，请联系开发者！");
                        var values = new List<KeyValuePair<string, string>>();
                        values.Add(new KeyValuePair<string, string>("softName", "帮派考勤记录器"));
                        values.Add(new KeyValuePair<string, string>("mCode", mNum));

                        var content = new FormUrlEncodedContent(values);
                        await client.PostAsync("http://xxxxxx/AddSoftReg", content);
                        MessageBox.Show("软件已自动注册成功，默认使用3天，请关闭重新打开！");                 
                    }
           }