How to clear specific TempData

Question

How to clear specific TempData in asp.net mvc. I am using more than two TempData var. I can to clear specific some of them.

TempData["USD"] = "updated";
TempData["EUR"] = "updated";
TempData["PKR"] = "updated";

TempData.Clear() will clear all TempData, how to do this for specific

`TempData["whateveryouwanttoclear"] = string.empty` or `null`? — Kritner, Oct 06 '16 at 14:00
Why do you need to clean it up? Perhaps `Cache` is a better choice than `TempData`? — D Stanley, Oct 06 '16 at 14:02
after one request tempdata will dispose itself then why you need to clear if — Midhun Mundayadan, Oct 06 '16 at 14:10

score 22 · Accepted Answer · answered Oct 06 '16 at 14:42

22

just this worked for me fine, only removed TempData["USD"]

TempData.Remove("USD");

answered Oct 06 '16 at 14:42

trighati

1,306
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1

How is this any different from @user3060520 's answer? – Kritner Oct 06 '16 at 16:49

score 3 · Answer 2 · answered Oct 06 '16 at 14:01

3

var value = filterContext.Controller.TempData["value"];
filterContext.Controller.TempData.Remove("value");

answered Oct 06 '16 at 14:01

huse.ckr

492
10
37

this is not removing – trighati Oct 06 '16 at 14:09
1

Could you also check [TempData won't destroy after second request](http://stackoverflow.com/a/12815759/3060520) – huse.ckr Oct 06 '16 at 14:25

score 1 · Answer 3 · answered Jul 28 '17 at 08:32

1

Alternative way of removing TempData, when using dynamic key name,

Eg:

UserModel model = new UserModel(); //Declare
model.UserId = 12;
model.UserName = "Karthik";
TempData["UserModel_" + model.UserId] = model.UserModel; //Assign

To get value from TempData,

UserModel model = new UserModel(); //Declare
model.UserId = 12;
model = (UserModel)TempData["UserModel_" + model.UserId];  //Get
TempData.Keep("UserModel_" + model.UserId);

Remove TempData without knowing dynamic key name,

foreach (var key in TempData.Keys.ToList())
{
    TempData.Remove(key);   
}

answered Jul 28 '17 at 08:32

Karthikeyan P

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22

Thanks, this is I need. – Vaibhav shetty Jul 28 '17 at 08:35
1

Why not just use `TempData.Clear()` for the last bit? – Evan LaHurd Jan 12 '18 at 20:03

How to clear specific TempData

3 Answers3