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Redirect user to login page if session null in MVC 5 Razor syntax

Redirect user to login page if session null in MVC 5 Razor syntax

Edit
For Example using MVC 5 Razor:

 @{
     //get user session.
     var session = UserManager.Session();
     if (session == null)
     {
        Response.Redirect("~/Account/LogOff");
     }
 }
                                          OR

We can also use the custom action filter to achieve this functionality. i.e.

For Example :

// Override onAuthentication filter to achieve this functionality.
//and also get user session to check is null value.
protected override void OnAuthentication(AuthenticationContext filterContext)
{
      session = UserManager.Session();
      if ( session == null)
      {
        RedirectToControllers(Helper.Control.ACCOUNT, Helper.Action.ACCOUNT_LOGIN);
      }

      base.OnAuthentication(filterContext);
}



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