/// <summary>
        /// 定义IE版本的枚举
        /// </summary>
        private enum IeVersion
        {
            强制ie10,//10001 (0x2711) Internet Explorer 10。网页以IE 10的标准模式展现，页面!DOCTYPE无效
            标准ie10,//10000 (0x02710) Internet Explorer 10。在IE 10标准模式中按照网页上!DOCTYPE指令来显示网页。Internet Explorer 10 默认值。
            强制ie9,//9999 (0x270F) Windows Internet Explorer 9. 强制IE9显示，忽略!DOCTYPE指令
            标准ie9,//9000 (0x2328) Internet Explorer 9. Internet Explorer 9默认值，在IE9标准模式中按照网页上!DOCTYPE指令来显示网页。
            强制ie8,//8888 (0x22B8) Internet Explorer 8，强制IE8标准模式显示，忽略!DOCTYPE指令
            标准ie8,//8000 (0x1F40) Internet Explorer 8默认设置，在IE8标准模式中按照网页上!DOCTYPE指令展示网页
            标准ie7//7000 (0x1B58) 使用WebBrowser Control控件的应用程序所使用的默认值，在IE7标准模式中按照网页上!DOCTYPE指令来展示网页
        }

        /// <summary>
        /// 设置WebBrowser的默认版本
        /// </summary>
        /// <param name="ver">IE版本</param>
        private void SetIE(IeVersion ver)
        {
            string productName = AppDomain.CurrentDomain.SetupInformation.ApplicationName;//获取程序名称

            object version;
            switch (ver)
            {
                case IeVersion.标准ie7:
                    version = 0x1B58;
                    break;
                case IeVersion.标准ie8:
                    version = 0x1F40;
                    break;
                case IeVersion.强制ie8:
                    version = 0x22B8;
                    break;
                case IeVersion.标准ie9:
                    version = 0x2328;
                    break;
                case IeVersion.强制ie9:
                    version = 0x270F;
                    break;
                case IeVersion.标准ie10:
                    version = 0x02710;
                    break;
                case IeVersion.强制ie10:
                    version = 0x2711;
                    break;
                default:
                    version = 0x1F40;
                    break;
            }

            RegistryKey key = Registry.CurrentUser;
            RegistryKey software =
                key.CreateSubKey(
                    @"Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\" + productName);
            if (software != null)
            {
                software.Close();
                software.Dispose();
            }
            RegistryKey wwui =
                key.OpenSubKey(
                    @"Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION", true);
            //该项必须已存在
            if (wwui != null) wwui.SetValue(productName, version, RegistryValueKind.DWord);
        }