Getting an error implementing Roles in MVC 4 - asp.net-mvc-4

Question

I am trying to register a user to a role but i am getting the following error:
No user found was found that has the name "MyName"
I have created an MVC 4 Application using the default template.
I have created a custom membership provider and implemented the CreateUser method as follow
public User CreateUser(User i_userToCreate)
{
using (var _db = new Repository())
{
User _user = _db.CreateUser(i_userToCreate);
MembershipUser _membershipUser = new MembershipUser(providerName: "ATWMembershipProvider",
name: _user.UserName,
providerUserKey: null,
email: _user.Email,
passwordQuestion: "",
comment: "",
isApproved: true,
isLockedOut: false,
creationDate: DateTime.UtcNow,
lastLoginDate: DateTime.UtcNow,
lastActivityDate: DateTime.UtcNow,
lastPasswordChangedDate: DateTime.UtcNow,
lastLockoutDate: DateTime.UtcNow);
return _user;
}
This is how i configured my web.config
<appSettings>
<add key="enableSimpleMembership" value="false"/>
<add key="autoFormsAuthentication" value="false"/>
</appSettings>
<system.web>
<membership defaultProvider="ATWMembershipProvider">
<providers>
<clear/>
<add name="ATWMembershipProvider" type="AroundTheWorld.Infrastructure.ATWMembershipProvider"
enablePasswordRetrieval="false"
ConnetionStringName="Context"
enablePasswordReset="true"
requiresQuestionAndAnswer="false"
equiresUniqueEmail="false"
maxInvalidPasswordAttempts="5"
minRequiredPasswordLength="6"
minRequiredNonalphanumericCharacters="0"
passwordAttemptWindow="10" applicationName="myApplication" />
</providers>
</membership>
<roleManager enabled="true" defaultProvider="AspNetSqlRoleProvider">
<providers>
<remove name="AspNetSqlRoleProvider" />
<add name="AspNetSqlRoleProvider" type="WebMatrix.WebData.SimpleRoleProvider, WebMatrix.WebData, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<!-- note: WebMatrix registers SimpleRoleProvider with name
'AspNetSqlRoleProvider'. I don't know why but i kept it. -->
</providers>
</roleManager>
Now the authenticate method is as follow:
var MembershipProvider = new ATWMembershipProvider();
User authentictedUser = MembershipProvider.CreateUser(_userToCreate);
FormsAuthentication.SetAuthCookie(authentictedUser.UserName, true);
System.Web.Security.Roles.AddUserToRole(authentictedUser.UserName, authentictedUser.Role.Name);
Session.Add("UserID", authentictedUser.ID);
Session.Add("UserName", authentictedUser.UserName);
I have already checked the following:
My User as all necessary information
I have registered two roles in App_start "user" , "admin"
but i still getting an error that No user found was found that has the name "MyName"
In asp web form that wasn't necessary in order to secure a folder based on a role
All i am trying to do is to secure an action inside a controller to a specific "Role"
[Authorize(Roles = "admin")]
public ActionResult GetAllLocations()
{
using (var _db = new Repository())
{
return View(_db.GetLocations());
}
}

Answer 1

I have fixed the problem...
The problem was because I implemented only a custom membership provider without a role provider.
I have followed this blog.
Basically I have created a class MyOwnRoleProvider which inherits from RoleProvider
and:
Implemented the method called GetRolesForUser
Implemented the method called GetUsersInRole
finally I modified my web.config to
<roleManager defaultProvider="ATWRoleProvider" enabled="true" cacheRolesInCookie="true">
<providers>
<clear />
<add name="ATWRoleProvider" type="AroundTheWorld.Infrastructure.ATWRoleProvider, AroundTheWorld" connectionStringName="Context" />
</providers>
</roleManager>
after it I was able to use the following
[Authorize(Roles="admin")]
public ActionResult GetAllLocations()
{
using (var _db = new Repository())
{
return View(_db.GetLocations());
}
}
AND
#if (User.IsInRole("user"))
I hope it will be helpful for someone...