Windows. Web. Http. HttpClient. GetStringAsync always returns the same result, system. web. http

Windows. Web. Http. HttpClient. GetStringAsync always returns the same result, system. web. http

Today, when I tested the WP8.1 client of blog news, I found that the news on my computer has been updated. However, the mobile phone has not been updated, so it must have been a bug. So I created a Web test project and found that only the first request was sent. At first, I thought it was an MVVM problem. Later I found out that it was a problem with the HttpClient class.

HttpClient caches Get requests with the same Uri locally.

Solution:

1. Add a timestamp to querystring.

2. Add a Filter when creating HttpClient.

1 var filter = new HttpBaseProtocolFilter (); 2 filter. cacheControl. readBehavior = HttpCacheReadBehavior. mostRecent; 3 using (var client = new HttpClient (filter) 4 {5 var html = await client. getStringAsync (); 6}