的WebView - 每个请求定义的User-Agent [英] WebView - Define User-Agent on every request

问题描述

目前，我设置的请求消息的User-Agent如下：

Currently, I am setting the User-Agent of a request message as follows:

var rm = new HttpRequestMessage(HttpMethod.Post, new Uri("http://example.com"));       
rm.Headers.Add("User-Agent", "UserAgentString");
webView.NavigateWithHttpRequestMessage(rm);

一切正常。

，当我导航到另一个页面时，通过单击网站上的链接，例如，用户代理重置为 WebView 的默认值。

But, when I am navigating to an another page, by clicking a link on the site for example, the User-Agent resets to the default of the WebView.

是否有任何方法可以永久设置用户代理或在每个请求时更改用户代理？

Is there any way of setting the User-Agent permanently or changing it on every request made?

感谢您，
乔治

Thanks, George

推荐答案

NavigationStarting 发生在webview导航到新内容之前。您可以取消该操作，获取 args.Uri ，然后使用 HttpRequestMessage 进行导航。还有 FrameNavigationStarting 。

NavigationStarting occurs before the webview navigates to new content. You can cancel that operation get the args.Uri and navigate with HttpRequestMessage. There is also FrameNavigationStarting.

WebView wb = new WebView();
wb.NavigationStarting += A_NavigationStarting;

private void A_NavigationStarting(WebView sender, WebViewNavigationStartingEventArgs args)
{
    //this will throw `StackOverflowException` so you have to add a condition here
    if(handled)
    {
        args.Cancel = true;
        var rm = new HttpRequestMessage(HttpMethod.Post, args.Uri);

        rm.Headers.Add("User-Agent", "UserAgentString");
        sender.NavigateWithHttpRequestMessage(rm);
    }
}

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