設置IE瀏覽器的版本方式

winform使用自帶的瀏覽器控件，有時候展示的頁面顯示的不好看，需要設置IE版本。忘記從哪找的了，記錄在這

public static class SetWebBrowserVersion
    {
        public static void SetWebBrowserFeatures(int ieVersion)
        {
            if (LicenseManager.UsageMode != LicenseUsageMode.Runtime)
                return;
            //獲取程序及名稱  
            var appName = Path.GetFileName(Process.GetCurrentProcess().MainModule.FileName);
            //得到瀏覽器的模式的值  
            UInt32 ieMode = GeoEmulationModee(ieVersion);
            var featureControlRegKey = @"HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\";
            //設置瀏覽器對應用程序（appName）以什麼模式（ieMode）運行  
            Registry.SetValue(featureControlRegKey + "FEATURE_BROWSER_EMULATION",
                appName, ieMode, RegistryValueKind.DWord);
            // enable the features which are "On" for the full Internet Explorer browser  
            //不曉得設置有什麼用  
            Registry.SetValue(featureControlRegKey + "FEATURE_ENABLE_CLIPCHILDREN_OPTIMIZATION",
                appName, 1, RegistryValueKind.DWord);
        }
        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;
        }
    }