ASP.NET MVC how to implement link which returns to previous page?

asp.net-mvc, session

Solution

I think you need something like this custom filter (not tested - have no VS at the moment):

public class PrevUrlAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        var httpContext = filterContext.HttpContext;
        var session = filterContext.HttpContext.Session;

        if (httpContext.Request.RequestType == "GET"
            && !httpContext.Request.IsAjaxRequest())
        {
            session["PrevUrl"] = session["CurUrl"] ?? httpContext.Request.Url;
            session["CurUrl"] = httpContext.Request.Url;
        }
    }
}

Problem

Title said it all. Some context: I got a search mechanism - search view, search results view and a details view (which represents one item of results, like a formview in webforms). I want a link in details view, which would return user to search results view. Ideas: Just read about TempData, but i guess that wouldn't help, cause user might call some actions before he wants to return. Session might work, but I'm not sure how exactly i should handle it. I don't want to use javascript to accomplish this. Edit: Seems that i'll stick with eu-ge-ne`s solution. Here's result: ``` #region usages using System.Web.Mvc; using CompanyName.UI.UIApp.Infrastructure.Enums; #endregion namespace CompanyName.UI.UIApp.Infrastructure.Filters { /// <summary> /// Apply on action method to store URL of request in session /// </summary> public class RememberUrlAttribute : ActionFilterAttribute { public override void OnActionExecuting (ActionExecutingContext filterContext) { var httpContext = filterContext.HttpContext; if (httpContext.Request.RequestType == "GET" && !httpContext.Request.IsAjaxRequest()) { SessionManager .Save(SessionKey.PreviousUrl, SessionManager.Get(SessionKey.CurrentUrl) ?? httpContext.Request.Url); SessionManager .Save(SessionKey.CurrentUrl, httpContext.Request.Url); } } } } ``` Btw, how does .IsAjaxRequest() method works? It understands only MS AJAX or it's smarter than that?

Original source