static HtmlHelperExtension()
 {
     if (_accessStrategy == null)
     {
         _accessStrategy = DependencyResolver.Current.ResolveCustomService <IControlAccessStrategy>();
         if (_accessStrategy == null)
         {
             throw new ArgumentException("Control显示策略未初始化,请注册显示策略", nameof(_accessStrategy));
         }
     }
 }
 public AccessControlTagHelper(IControlAccessStrategy controlAccessStrategy)
 {
     _controlAccessStrategy = controlAccessStrategy;
 }