没啥用，更换注册表信息使webbrower选择适合的版本

 /// <summary>    
        /// 修改注册表信息来兼容当前程序    
        ///     
        /// </summary>    
        static void SetWebBrowserFeatures(int ieVersion)
        {
            if (LicenseManager.UsageMode != LicenseUsageMode.Runtime)
                return;
            //获取程序及名称    
            var appName = System.IO.Path.GetFileName(System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName);
            //得到浏览器的模式的值    
            UInt32 ieMode = GeoEmulationModee(ieVersion);
            var featureControlRegKey = @"HKEY_CURRENT_USERSoftwareMicrosoftInternet ExplorerMainFeatureControl";
            //设置浏览器对应用程序（appName）以什么模式（ieMode）运行    
            Registry.SetValue(featureControlRegKey + "FEATURE_BROWSER_EMULATION",
                appName, ieMode, RegistryValueKind.DWord);
            //不晓得设置有什么用    
            Registry.SetValue(featureControlRegKey + "FEATURE_ENABLE_CLIPCHILDREN_OPTIMIZATION",
                appName, 1, RegistryValueKind.DWord);
        }
        /// <summary>    
        /// 获取浏览器的版本    
        /// </summary>    
        /// <returns></returns>    
        static int GetBrowserVersion()
        {
            int browserVersion = 0;
            using (var ieKey = Registry.LocalMachine.OpenSubKey(@"SOFTWAREMicrosoftInternet Explorer",
                RegistryKeyPermissionCheck.ReadSubTree,
                System.Security.AccessControl.RegistryRights.QueryValues))
            {
                var version = ieKey.GetValue("svcVersion");
                if (null == version)
                {
                    version = ieKey.GetValue("Version");
                    if (null == version)
                        throw new ApplicationException("Microsoft Internet Explorer is required!");
                }
                int.TryParse(version.ToString().Split('.')[0], out browserVersion);
            }
            //如果小于7    
            if (browserVersion < 7)
            {
                throw new ApplicationException("不支持的浏览器版本!");
            }
            return browserVersion;
        }
        /// <summary>    
        /// 通过版本得到浏览器模式的值    
        /// </summary>    
        /// <param name="browserVersion"></param>    
        /// <returns></returns>    
        static UInt32 GeoEmulationModee(int browserVersion)
        {
            UInt32 mode = 11000; // Internet Explorer 11. Webpages containing standards-based !DOCTYPE directives are displayed in IE11 Standards mode.     
            switch (browserVersion)
            {
                case 7:
                    mode = 7000; // Webpages containing standards-based !DOCTYPE directives are displayed in IE7 Standards mode.     
                    break;
                case 8:
                    mode = 8000; // Webpages containing standards-based !DOCTYPE directives are displayed in IE8 mode.     
                    break;
                case 9:
                    mode = 9000; // Internet Explorer 9. Webpages containing standards-based !DOCTYPE directives are displayed in IE9 mode.                        
                    break;
                case 10:
                    mode = 10000; // Internet Explorer 10.    
                    break;
                case 11:
                    mode = 11000; // Internet Explorer 11    
                    break;
            }
            return mode;
        }