Asp.net mvc 4中出现的web api是用来实现REST.

关于什么是REST，可以看这里

 

通过ajax等访问 web api非常方便，但是如何在Winform, Silverlight等访问web api呢?

通过搜索，发现了已经有人做过这个东西了，就是RestSharp.

 RestSharp不只是访问web api, 访问其他平台的Rest API也是一样。

看看介绍的使用，无论是post数据，文件，格式化返回数据，异步请求都非常方便：

 

var client = new RestClient("http://example.com");// client.Authenticator = new HttpBasicAuthenticator(username, password);var request = new RestRequest("resource/{id}", Method.POST);request.AddParameter("name", "value"); // adds to POST or URL querystring based on Methodrequest.AddUrlSegment("id", 123); // replaces matching token in request.Resource// add parameters for all properties on an objectrequest.AddObject(object);// or just whitelisted propertiesrequest.AddObject(object, "PersonId", "Name", ...);// easily add HTTP Headersrequest.AddHeader("header", "value");// add files to upload (works with compatible verbs)request.AddFile(path);// execute the requestRestResponse response = client.Execute(request);var content = response.Content; // raw content as string// or automatically deserialize result// return content type is sniffed but can be explicitly set via RestClient.AddHandler();RestResponse
     
       response2 = client.Execute
      
       (request);var name = response2.Data.Name;// or download and save file to diskclient.DownloadData(request).SaveAs(path);// easy async supportclient.ExecuteAsync(request, response => {    Console.WriteLine(response.Content);});// async with deserializationvar asyncHandle = client.ExecuteAsync
       
        (request, response => {    Console.WriteLine(response.Data.Name);});// abort the request on demandasyncHandle.Abort();