WP7 HttpWebRequest无需缓存 [英] WP7 HttpWebRequest without caching

问题描述

似乎默认情况下启用了WP7中的HttpWebRequest缓存，如何关闭它？
添加一个随机的
参数url +？param = + RND.Next（10000）可以工作，但是这非常棘手，我不确定它是否可以在所有服务器上工作
。

It seems that HttpWebRequest caching in WP7 is enabled by default, how do I turn it off? Adding a random param url + "?param=" + RND.Next(10000) works, but it's quite tricky and I'm not sure if it will work with all servers.

推荐答案

供以后参考，这对我有用（由于项目要求，我无法使用其他查询参数）：

For future reference , this worked for me ( I could not use additional query parameter due to project requirements) :

        HttpWebRequest request = HttpWebRequest.CreateHttp(url);
        if (request.Headers == null)
        {
            request.Headers = new WebHeaderCollection();
        }
        request.Headers[HttpRequestHeader.IfModifiedSince] = DateTime.UtcNow.ToString();

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