如何在OnActionExecutiong中返回partialView？

Question

如果某些会话变量为空，我想导致部分视图而不是重定向结果，我有点困惑。是否可以？如果是这样怎么办？我可以看到有一个 PartialViewResult，但我不知道如何使用它。

 public class XXActionFilter : ActionFilterAttribute, IActionFilter
    {
        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            HttpContext context = HttpContext.Current;

            if ((context.Session[item] == null))
            {
                filterContext.Result = my partial view
                return;              
            }


            base.OnActionExecuting(filterContext);
        }
    }

Answer 1

您应该将 的实例传递PartialViewResult给Result属性：

public class XXActionFilter : ActionFilterAttribute, IActionFilter
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        HttpContext context = HttpContext.Current;

        if ((context.Session[item] == null))
        {
            var result = new PartialViewResult
            {
                 ViewName = "PathToView"
            };

            filterContext.Result = result;
            return;              
        }


        base.OnActionExecuting(filterContext);
    }
}