c# - Getting viewbag dynamic property's value as null -

i storing value in dynamic property called login in login action method in controller , accessing value of viewbag in index view. gettng value null. why so.?

following code in controllers login action method.

viewbag.login = "false"; return redirecttoaction("index"); 

here code using in index view(cshtml).

@if (@viewbag.login != "") 

here in view getting @viewbag.login's value null. if remove @ symbol this

viewbag.login  still value null.  

please help. viewbag should persist value within view's , action methods bind same controller.

viewbag not persist across http requests.

you do

public actionresult login() {    /* pass `login` querystring */    return redirecttoaction("index", new { login = false }); }  public actionresult index(bool login)  {    /* read querystring, , pass value `viewbag` */    viewbag.login = login;    return view(); }