Windows Phone 通用HTTP请求类，很好用！

现在的移动应用几乎没有只在本地进行操作的，或多或少会有一定的网络请求，不论是普通的HTTP请求返回XML或JSON还是利用Socket进行TCP/UDP通信，Windows Phone上提供了，HttpWebRequest、WebClient、Socket等基本的通信类，但每次在请求的时候需要写一系列的代码，有时候还容易出错，下面介绍一个我个人在开发过程中觉得很好用的一个类，支持基本的GET和POST方法。

public class UniRequest    {        public delegate void HandleResult(string result);        private HandleResult handle;        HttpWebRequest request;        HttpWebResponse response;        Dictionary<string, object> Params = new Dictionary<string, object>();        byte[] POSTBin;        string ResponseContent;        /// <summary>        /// 构造函数，获取URL、方法        /// </summary>        /// <param name="url">请求路径</param>        /// <param name="method">请求方法POST或GET</param>        public UniRequest(string url, string method = "GET")        {            try            {                request = (HttpWebRequest)HttpWebRequest.Create(url);            }            catch (Exception e)            {                Debug.WriteLine("Request Created Failed!" + e.Message);                return;            }            switch (method)            {                case "POST":                    request.Method = "POST";                    request.ContentType = "application/x-www-form-urlencoded";                    break;                case "GET": request.Method = "GET"; break;                default: request.Method = "GET"; break;            }        }        /// <summary>        /// 添加请求参数        /// </summary>        /// <param name="key">键</param>        /// <param name="value">值</param>        public void AddParams(string key, object value)        {            if (request.Method == "GET")            {                Debug.WriteLine("Method Error!");                return;            }            Params.Add(key, value);        }        /// <summary>        /// 开始请求        /// </summary>        /// <param name="handle">请求结果</param>        public void StartRequest(HandleResult handle)        {            this.handle = handle;            switch (request.Method)            {                default:                case "GET": request.BeginGetResponse(new AsyncCallback(GetResponse), request); break;                case "POST": request.BeginGetRequestStream(new AsyncCallback(UploadParam), request); break;            }        }        void UploadParam(IAsyncResult result)        {            HttpWebRequest request = (HttpWebRequest)result.AsyncState;            using (Stream stream = request.EndGetRequestStream(result))            {                string tmp = "";                for (int i = 0; i < Params.Count; i++)                {                    tmp += string.Format("{0}={1}", Params.ElementAtOrDefault(i).Key, Params.ElementAtOrDefault(i).Value);                    if (i + 1 != Params.Count)                    {                        tmp += "&";                    }                }                POSTBin = Encoding.UTF8.GetBytes(tmp);                stream.Write(POSTBin, 0, POSTBin.Length);            }            request.BeginGetResponse(new AsyncCallback(GetResponse), request);        }        void GetResponse(IAsyncResult result)        {            try            {                request = (HttpWebRequest)result.AsyncState;                response = (HttpWebResponse)request.EndGetResponse(result);                using (Stream stream = response.GetResponseStream())                {                    StreamReader reader = new StreamReader(stream);                    ResponseContent = reader.ReadToEnd();                }            }            catch (Exception e)            {                ResponseContent = "Request Error!";                Debug.WriteLine(e.InnerException.ToString());            }            Deployment.Current.Dispatcher.BeginInvoke(() => { handle(ResponseContent); });        }    }

每次在请求的时候，只需要实例化一个对象，然后添加参数，即可开始异步请求，就像这样

   UniRequest Request = new UniRequest("url", "POST");            Request.AddParams("Email", "Email"); //参数1            Request.AddParams("Name", "Name"); //参数2            Request.AddParams("Sex", "0"); //参数3            Request.AddParams("Password", "123456"); //参数4            Request.StartRequest(result =>                {                    MessageBox.Show(result);  //显示结果                });

非常的方便！