csharp 这为mvc创建了一个新的操作链接扩展，用于检查用户的声明并允许在声明有效时显示链接o

Posted 2021-05-12

public static class LinkExtensions
    {
        public static IHtmlString ActionLinkIfInClaim(
            this HtmlHelper htmlHelper,
            string claimType,
            string claimValue,
            string linkText,
            string action,
            string routevalue
        )
        {
            if (HttpContext.Current.User.Identity.IsAuthenticated)
            {
                var user = HttpContext.Current.User.Identity as System.Security.Claims.ClaimsIdentity;
                var claim = user.FindFirst(c => c.Type == claimType && c.Value == claimValue);
                if (claim == null)
                {
                    return MvcHtmlString.Empty;
                }
                return htmlHelper.ActionLink(linkText, action, routevalue);
            }
            return MvcHtmlString.Empty;
        }