MVC 5.1 identity 2 add new Role to myself need to log out - asp.net-mvc

Question

When I add new Role to my own account I have to log out and log back in so this role will start working. Is there a way to re-load roles on the fly (after adding/deleting) ?
I'm using Individual Accounts stored in Ms SQL Server 2012 in MVC 5.1.2 and Identity v. 2.0.0
Below is controller code:
// GET: /Users/Edit/1
public async Task<ActionResult> Edit(string id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
var user = await UserManager.FindByIdAsync(id);
if (user == null)
{
return HttpNotFound();
}
var userRoles = await UserManager.GetRolesAsync(user.Id);
return View(new EditUserViewModel()
{
Id = user.Id,
Email = user.Email,
FirstName = user.FirstName,
LastName = user.LastName,
CustomerID = user.CustomerID,
siteID = user.SiteID,
RolesList = RoleManager.Roles.ToList().Select(x => new SelectListItem()
{
Selected = userRoles.Contains(x.Name),
Text = x.Name,
Value = x.Name
}),
SitesList = db.sites.ToList().Select(y=> new SelectListItem()
{
Selected= user.SiteID==y.siteID,
Text = y.siteCode,
Value= y.siteID.ToString()
})
});
}
//
// POST: /Users/Edit/5
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Edit([Bind(Include = "Email,Id,FirstName,LastName,CustomerID,siteID")] EditUserViewModel editUser, params string[] selectedRole)
{
if (ModelState.IsValid)
{
var user = await UserManager.FindByIdAsync(editUser.Id);
if (user == null)
{
return HttpNotFound();
}
user.UserName = editUser.Email;
user.Email = editUser.Email;
user.FirstName = editUser.FirstName;
user.LastName = editUser.LastName;
user.CustomerID = editUser.CustomerID;
user.SiteID = editUser.siteID;
var userRoles = await UserManager.GetRolesAsync(user.Id);
selectedRole = selectedRole ?? new string[] { };
var result = await UserManager.AddUserToRolesAsync(user.Id, selectedRole.Except(userRoles).ToList<string>());
if (!result.Succeeded)
{
ModelState.AddModelError("", result.Errors.First());
return View();
}
result = await UserManager.RemoveUserFromRolesAsync(user.Id, userRoles.Except(selectedRole).ToList<string>());
if (!result.Succeeded)
{
ModelState.AddModelError("", result.Errors.First());
return View();
}
return RedirectToAction("Index");
}
editUser.RolesList = RoleManager.Roles.ToList().Select(x => new SelectListItem()
{
//Selected = userRoles.Contains(x.Name),
Text = x.Name,
Value = x.Name
});
ModelState.AddModelError("", "Something failed.");
return View(editUser);
}