CODEWITHSUNDEEP
c#asp.netasp.net-mvc
Yaw
Yaw

Reputation: 70

Keeping controller in scope

Yesterday i was working on my asp.net mvc application where i was trying to cache some data in a field while a certain controller was in scope. The field kept clearing every time a new view got opened.

Question: Is it possible to keep your Controller in scope while you're browsing Views that are handled by said Controller?

private static List<string> _listOfStrings;

[Authorize]
public ActionResult ToView1()
{
    _listOfStrings = new List<String>(){"test","test2"};

    var model = new Model();
    return View(model);
}

[Authorize]
public ActionResult FromView1ToView2()
{
    var model = new Model(_listOfStrings);
    //the issue at hand is that '_listOfStrings' is not persisted.
    return View(model);
}

Anyone got an idea if this is possible? (The list is big, so i would prefer not sending it through the model into the view and vice versa)

Upvotes: 0

Views: 1425

Answers (2)

CooncilWorker
CooncilWorker

Reputation: 415

_listOfStrings is a different variable to listOfStrings. You are not writing to or reading from the static field. In the code you have presented, _listOfStrings is not even defined.

Use one static variable and this code will work.

Upvotes: 0

Mark Shevchenko
Mark Shevchenko

Reputation: 8207

You need to read about an ASP.NET MVC lifecycle.

Short answer: no, you can't cause Controller is destroyed after a call of an action. Detail answer: you can store (cache) data in a TempData or in a Session properties.

Upvotes: 3

Related Questions