extjs folder is lost解决方法 和 FineUI主题切换时 iframe内的内容主题不变的解决方法

错误原因：extjs包和FineUI版本不一致 或者是 webconfig配置中 没有设置为任何人可访问  解放方法下载和FineUI版本相同的extjs包就ok了

解决方法：FineUI主题切换时 iframe内的内容主题不变的解决方法：窗体继承 PageBase页面

PageBase页面代码：

public class PageBase : System.Web.UI.Page
    {
        #region OnInit

        protected override void OnInit(EventArgs e)
        {
            if (!IsPostBack)
            {
                if (PageManager.Instance != null)
                {
                    HttpCookie themeCookie = Request.Cookies["Theme_v4"];
                    if (themeCookie != null)
                    {
                        string themeValue = themeCookie.Value;
                        PageManager.Instance.Theme = (Theme)Enum.Parse(typeof(Theme), themeValue, true);

                        //if (IsSystemTheme(themeValue))
                        //{
                        //    PageManager.Instance.Theme = (Theme)Enum.Parse(typeof(Theme), themeValue, true);
                        //}
                        //else
                        //{
                        //    PageManager.Instance.CustomTheme = themeValue;
                        //}
                    }

                    HttpCookie langCookie = Request.Cookies["Language_v4"];
                    if (langCookie != null)
                    {
                        string langValue = langCookie.Value;
                        PageManager.Instance.Language = (Language)Enum.Parse(typeof(Language), langValue, true);
                    }
                }
            }

            base.OnInit(e);
        }

        private bool IsSystemTheme(string themeName)
        {
            themeName = themeName.ToLower();
            string[] themes = Enum.GetNames(typeof(Theme));
            foreach (string theme in themes)
            {
                if (theme.ToLower() == themeName)
                {
                    return true;
                }
            }
            return false;
        }

        #endregion
}