c# 设置WebBrowser的UserAgent

  void SuppressScriptErrors(WebBrowser webBrowser, bool hide)
        {
            webBrowser.Navigating += (s, e) =>
            {
                var fiComWebBrowser = typeof(WebBrowser).GetField("_axIWebBrowser2", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
                if (fiComWebBrowser == null)
                    return;

                object objComWebBrowser = fiComWebBrowser.GetValue(webBrowser);
                if (objComWebBrowser == null)
                    return;

                objComWebBrowser.GetType().InvokeMember("Silent", System.Reflection.BindingFlags.SetProperty, null, objComWebBrowser, new object[] { hide });
            };
        }

//设置浏览器的UserAgent

  public class UserAgentHelper
        {

            [DllImport("urlmon.dll", CharSet = CharSet.Ansi)]
            private static extern int UrlMkSetSessionOption(int dwOption, string pBuffer, int dwBufferLength, int dwReserved);
            private static string deskUA = "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36 QIHU 360SE";
            public static void SetUserAgent(WebBrowser web,bool isDeskUserAgent=false)
            {                     //Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1
                                  //Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1
                string pBuffer = "Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1";
                if (isDeskUserAgent) 
                {
                    pBuffer = deskUA;
                }
                UrlMkSetSessionOption(0x10000001, pBuffer, pBuffer.Length, 0);
                // web.ScriptErrorsSuppressed = true; 

            }


        }
    

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来源： https://www.cnblogs.com/wgscd/p/16352911.html