在.net中修改Webbrowser控件的IE版本

根据32位、64位系统来分别修改对应的注册表路径的键值对，不需要重启程序。

        /// <summary>
        /// 修改Webbrowser控件模拟的IE版本
        /// </summary>
        /// <param name="ieMode">
        /// 7000: Pages containing standards-based <!DOCTYPE> directives aredisplayed in IE7 mode.
        /// 8000: Pages containing standards-based <!DOCTYPE> directives aredisplayed in IE8 mode
        /// 8888: Pages are always displayed in IE8mode, regardless of the <!DOCTYPE>directive. (This bypasses the exceptions listed earlier.)
        /// 9000: Use IE9 settings!
        /// 9999: Force IE9
        /// 10000: Use IE10 settings
        /// 11000: Use IE11 settings
        /// </param>
        public static void ChangeWebbrowserMode(int ieMode)
        {
            string appName = AppDomain.CurrentDomain.FriendlyName;
            string regPath = "";
            if (Is64BitOperatingSystem())
            {
                regPath = @"SOFTWARE\WOW6432Node\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION";
            }
            else
            {
                regPath = @"SOFTWARE\Microsoft\Internet Explorer\MAIN\FeatureControl\FEATURE_BROWSER_EMULATION";
            }
            using (RegistryKey ieMainKey = Registry.LocalMachine.OpenSubKey(
                 regPath, true))
            {
                var orignalMode = ieMainKey.GetValue(appName);
                if (orignalMode == null || (int)orignalMode != ieMode)
                {
                    ieMainKey.SetValue(appName, ieMode, RegistryValueKind.DWord);
                }
                //
            }
        }

        /// <summary>
        /// The function determines whether the current operating system is a
        /// 64-bit operating system.
        /// </summary>
        /// <returns>
        /// The function returns true if the operating system is 64-bit;
        /// otherwise, it returns false.
        /// </returns>
        public static bool Is64BitOperatingSystem()
        {
            if (IntPtr.Size == 8)  // 64-bit programs run only on Win64
            {
                return true;
            }
            else  // 32-bit programs run on both 32-bit and 64-bit Windows
            {
                // Detect whether the current process is a 32-bit process
                // running on a 64-bit system.
                bool flag;
                return ((DoesWin32MethodExist("kernel32.dll", "IsWow64Process") &&
                    IsWow64Process(GetCurrentProcess(), out flag)) && flag);
            }
        }

        /// <summary>
        /// The function determins whether a method exists in the export
        /// table of a certain module.
        /// </summary>
        /// <param name="moduleName">The name of the module</param>
        /// <param name="methodName">The name of the method</param>
        /// <returns>
        /// The function returns true if the method specified by methodName
        /// exists in the export table of the module specified by moduleName.
        /// </returns>
        static bool DoesWin32MethodExist(string moduleName, string methodName)
        {
            IntPtr moduleHandle = GetModuleHandle(moduleName);
            if (moduleHandle == IntPtr.Zero)
            {
                return false;
            }
            return (GetProcAddress(moduleHandle, methodName) != IntPtr.Zero);
        }

        [DllImport("kernel32.dll")]
        static extern IntPtr GetCurrentProcess();

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        static extern IntPtr GetModuleHandle(string moduleName);

        [DllImport("kernel32", CharSet = CharSet.Auto, SetLastError = true)]
        static extern IntPtr GetProcAddress(IntPtr hModule,
            [MarshalAs(UnmanagedType.LPStr)]string procName);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool IsWow64Process(IntPtr hProcess, out bool wow64Process);