只允许ajax请求

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using System;using System.Web.Mvc;namespace FmallExternal.Helper.MvcWeb{    /// <summary>    /// 只允许ajax请求    /// </summary>    [AttributeUsage(AttributeTargets.Method, Inherited = false, AllowMultiple = false)]    public sealed class AjaxOnlyAttribute : ActionFilterAttribute    {        /// <summary>        /// 在执行操作方法后由 ASP.NET MVC 框架调用。        /// </summary>        /// <param name="filterContext">筛选器上下文。</param>        public override void OnActionExecuting(ActionExecutingContext filterContext)        {            if (filterContext != null && !filterContext.HttpContext.Request.IsAjaxRequest())            {                filterContext.Result = new HttpNotFoundResult();            }        }    }    /// <summary>    /// 只允许ajax请求与ChildAction    /// </summary>    [AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, Inherited = true, AllowMultiple = false)]    public sealed class AjaxOrChildActionOnlyAttribute : ActionFilterAttribute    {        /// <summary>        /// 在执行操作方法后由 ASP.NET MVC 框架调用。        /// </summary>        /// <param name="filterContext">筛选器上下文。</param>        public override void OnActionExecuting(ActionExecutingContext filterContext)        {            if (filterContext != null && !filterContext.HttpContext.Request.IsAjaxRequest() && !filterContext.IsChildAction)            {                filterContext.Result = new HttpNotFoundResult();            }        }    }}
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