Nannette Thacker ShiningStar.net

I had programmed a brilliant web page in ASP.NET 4.0 and lo and behold, this one page lost its sessions in Google Chrome. I could run it locally in debug and could not reproduce the issues in Chrome. Didn't happen in IE or Firefox, only Chrome on the published server.

On January 24th, 2012 I celebrate my 4th year of writing on this blog. I have written over 140 posts and have received over 700 comments.

From my C# MVC3 Razor Custom Membership Provider article and source code, here is the code for the ChangePassword method. I welcome any suggestions for improvement.

public override bool ChangePassword(string username, 
    string oldPassword, string newPassword)
{
    try
    {
        byte[] hashedNewPassword = HashPassword(newPassword.Trim());
        byte[] hashedOldPassword = HashPassword(oldPassword.Trim());
        using (var context = new SSSEntities())
        {
            UserProfile u = context.UserProfiles
            .SingleOrDefault(up => up.UserName == username && 
                up.UserPassword == hashedOldPassword);
            if (u != null)
            {
                u.UserPassword = hashedNewPassword;
                context.SaveChanges();
                return true;
            }
            else
                return false;
        }
    }
    catch (InvalidOperationException ex)
    {
        throw ex;
    }
    catch (ArgumentException)
    {
        throw;
    }
}

From my C# MVC3 Razor Custom Membership Provider article and source code, here is the code for the GetUser methods. I welcome any suggestions for improvement.

public override MembershipUser GetUser(object providerUserKey, bool userIsOnline)
{
    using (var context = new SSSEntities())
    {
        UserProfile u = context.UserProfiles
                    .SingleOrDefault(up => up.UserId == Convert.ToInt32(providerUserKey));
        MembershipUser membershipUser = GetMembershipUser(u);
        return membershipUser;
    }
}
public override MembershipUser GetUser(string username, bool userIsOnline)
{
    using (var context = new SSSEntities())
    {
        UserProfile u = context.UserProfiles
            .SingleOrDefault(up => up.UserName == username);
        MembershipUser membershipUser = GetMembershipUser(u);
        return membershipUser;
    }
}
// custom method to return a UserProfile
public UserProfile GetUser(string username)
{
    using (var context = new SSSEntities())
    {
        UserProfile u = context.UserProfiles
            .SingleOrDefault(up => up.UserName == username);
        return u;
    }
}
// custom method to return a UserProfile
public UserProfile GetUser(object providerUserKey)
{
    using (var context = new SSSEntities())
    {
        UserProfile u = context.UserProfiles
                    .SingleOrDefault(up => up.UserId == Convert.ToInt32(providerUserKey));
        return u;
    }
}

When receiving 404 page not found errors on your web site, and you wish to direct users back to your home page, you need to setup two things in your web.config to handle all instances.

From my C# MVC3 Razor Custom Membership Provider article and source code, here is the code for the CreateUser method. I welcome any suggestions for improvement.

public override MembershipUser CreateUser(string username, string password,
    string email, string passwordQuestion, string passwordAnswer,
    bool isApproved, object providerUserKey, out MembershipCreateStatus status)
{
    // only first 3 fields are passed in from the AccountModels.cs
    try
    {
        status = UsernameExists(username);
        if (status == MembershipCreateStatus.DuplicateUserName)
        {
            return null;
        }
        status = DuplicateEmail(email);
        if (status == MembershipCreateStatus.DuplicateEmail)
        {
            return null;
        }

        byte[] hashedPassword = HashPassword(password.Trim());
        GetValues gv = new GetValues();
        string ipAddress = gv.getIPAddress();
        int userStatus = 
            Convert.ToInt32(SSS.GlobalListValues.Enums.UserStatusCode.Active);

        using (var context = new SSSEntities())
        {
            UserProfile newUser = new UserProfile()
            {
                Email = email,
                UserPassword = hashedPassword,
                UserName = username,
                DateCreated = DateTime.Now,
                DateUpdated = DateTime.Now,
                DatePasswordLastChanged = DateTime.Now,
                DateLastLogin = DateTime.Now,
                UserStatusCode = userStatus,
                IpAddress = ipAddress,
            };


            // insert the User Role
            int userRole = 
                Convert.ToInt32(SSS.GlobalListValues.Enums.UserRoleCode.User_Public);
            // look up the desired user role : 
            // uses a UserRole join table with a many to many relation
            // between the UserProfile table and the ListValue table
            ListValue ur = context.ListValues
                .SingleOrDefault(lv => lv.ListValueId == userRole);
            newUser.UserProfileUserRoles.Add(ur);

            context.UserProfiles.AddObject(newUser);
            context.SaveChanges();

            // NKT: after creation, go back and retrieve the auto-generated identity key and 
            // update the userId's for the created and updated userId
            int userId = newUser.UserId;
            newUser.CreatedUserId = userId;
            newUser.UpdatedUserId = userId;

            context.SaveChanges();
            status = MembershipCreateStatus.Success;
            return GetMembershipUser(newUser);
        }
    }
    catch (ArgumentException)
    {
        status = MembershipCreateStatus.ProviderError;
        return null;
    }

}

From my C# MVC3 Razor Custom Membership Provider article and source code, here is the code for the DeleteUser method. I welcome any suggestions for improvement.

public override bool DeleteUser(string username, bool deleteAllRelatedData)
{
    // deleteAllRelatedData not implemented
    try
    {
        using (var context = new SSSEntities())
        {

            UserProfile u = context.UserProfiles
                .SingleOrDefault(up => up.UserName == username);

            context.UserProfiles.DeleteObject(u);
            context.SaveChanges();
            return true;
        }
    }
    catch
    {
        return false;
    }

From my C# MVC3 Razor Custom Membership Provider article and source code, here is the code for the UsernameExists & DuplicateEmail Helper methods. I welcome any suggestions for improvement.

// helper method
public MembershipCreateStatus UsernameExists(string username)
{
    using (var context = new SSSEntities())
    {
        if (context.UserProfiles.Any(
                    u => u.UserName == username))
        {
            return MembershipCreateStatus.DuplicateUserName;
        }
        return MembershipCreateStatus.Success;
    }
}

// helper method
public MembershipCreateStatus DuplicateEmail(string email)
{
    using (var context = new SSSEntities())
    {
        if (context.UserProfiles.Any(
                    u => u.Email == email))
        {
            return MembershipCreateStatus.DuplicateEmail;
        }
        return MembershipCreateStatus.Success;
    }
}