Windows Phone 16, HttpClient

HttpClient objects can also implement network requests

HttpClient operations are simpler and more powerful than HttpWebRequest objects

HttpClient provides a series of simpler APIs to implement basic requests

Supports both authentication and asynchronous operations

Note that there are two HttpClient types in the Windows Runtime platform, which are called almost the same way, and the following uses the HttpClient in Windows.Web.Http

Send data Format

Httpformurlencodedcontent

Httpmultipartcontent

Httpmultipartformdatacontent

Httpbuffercontent

Httpstreamcontent

Httpstringcontent

Set Cookies:client. Defaultrequestheaders.add ("Cookie", "cookie_key1=cookievalue1; cookie_key2=cookievalue2; ");

 1  <  grid  >  2   x:name  = "Txturl"  />  3  <  button  content  = "Down"   Click  = "Button_Click"  />  Span style= "color: #008080;" >4  </ grid  >  

1         protected Async Override voidonnavigatedto (NavigationEventArgs e)2         {3HttpClient client =NewHttpClient ();4Client. Defaultrequestheaders.authorization =NewWindows.Web.Http.Headers.HttpCredentialsHeaderValue ("Basic","111:222");5             //GET Request6             varresult =awaitClient. Getstringasync (NewUri ("http://localhost:7080/index.ashx"));7 8             varDict =Newdictionary<string,string>();9Dict. ADD ("Ke1","Val1");TenDict. ADD ("Ke2","Val2"); One             //await the client. Postasync (The New Uri ("http://localhost: 7080/index.ashx "), New Httpformurlencodedcontent (Dict)); A             //await the client. Postasync (The New Uri ("http://localhost: 7080/index.ashx "), New Httpstringcontent (" abc ")); -  -             varFile =awaitApplicationData.Current.LocalCacheFolder.CreateFileAsync ("1.txt", creationcollisionoption.replaceexisting); the             awaitFileio.appendtextasync (file,"abcdefghijklmnopqrstuvwxyz"); -             varFileStream =awaitfile. OpenAsync (fileaccessmode.read); -             awaitClient. Postasync (NewUri ("http://localhost:7080/index.ashx"),Newhttpstreamcontent (FileStream)); -         } +  -         Private Async voidButton_Click (Objectsender, RoutedEventArgs e) +         { A             //define request URI at             varRequestUri =NewUri (txturl.text); -             //Create an HTTP request client HttpClient -             varClient =NewHttpClient (); -             //To create a periodic watch object -iprogressNewProgress -             { in                 //here the parameter p, you can get information about the progress -System.Diagnostics.Debug.WriteLine (p.bytesreceived +"/"+p.totalbytestoreceive); to             }); +             //adding progress monitoring to an asynchronous task -Httpresponsemessage response =awaitclient. Getasync (RequestUri). AsTask (progress); the}

Windows Phone 16, HttpClient