基本格式：
???????????????HttpClient client = new HttpClient(); ???????????????Uri uri = new Uri(url); ???????????????HttpResponseMessage response = await client.GetAsync(uri); ???????????????response.EnsureSuccessStatusCode(); ???????????????string str = await response.Content.ReadAsStringAsync();
若得到Json数据：
可以通过以下方法方便的转换到类中：
var jsonMessage = await response.Content.ReadAsStringAsync(); ???????????var serializer = new DataContractJsonSerializer(typeof(JsonClass));//在json2csharp中转换过来的类 ???????????var ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonMessage)); ???????????var result = (JsonClass)serializer.ReadObject(ms);
若得到Xml数据：
可以通过遍历节点将数据一个个手动存放到类中：
string xml = await response.Content.ReadAsStringAsync();if (xml != null){List<CNBlog> list_blogs = new List<CNBlog>();CNBlog cnblog;XmlDocument doc = new XmlDocument();doc.LoadXml(xml);XmlNode feed = doc.ChildNodes[1];foreach (XmlNode node in feed.ChildNodes){if (node.Name.Equals("entry")){cnblog = new CNBlog();foreach (XmlNode node2 in node.ChildNodes){if (node2.Name.Equals("id")){cnblog.ID = node2.InnerText;}if (node2.Name.Equals("title")){cnblog.Title = node2.InnerText;}if (node2.Name.Equals("summary")){cnblog.Summary = node2.InnerText + "...";}}list_blogs.Add(cnblog);}}}XML的数据如下：
?<?xml version="1.0" encoding="utf-8" ?> - <feed xmlns="http://www.w3.org/2005/Atom"> ?<title type="text">博客园</title> ??<id>uuid:09b99565-46b8-4767-ad8d-ea0283b7b1ac;id=41476</id> ??<updated>2016-05-22T03:01:05Z</updated> ??<link href="http://www.cnblogs.com/" /> - <entry>//一段的入口 ?<id>5516348</id> ??<title type="text">教你如何剖析源码</title> ??<summary type="text">有近千行代码。看着都崩溃了。。。</summary> ??<published>2016-05-22T11:00:00+08:00</published> ??<updated>2016-05-22T03:01:05Z</updated> - <author> ?<name>狼行博客园</name> ??<uri>http://www.cnblogs.com/lang5230/</uri> ??<avatar>http://pic.cnblogs.com/face/835234/20151119122152.png</avatar> ??</author> ?<link rel="alternate" href="http://www.cnblogs.com/lang5230/p/5516348.html" /> ??<blogapp>lang5230</blogapp> ??<diggs>0</diggs> ??<views>1</views> ??<comments>0</comments> ??</entry>
UWP-HttpClient
原文地址：http://www.cnblogs.com/lonelyxmas/p/7559687.html