Question

I’m having a hard time figuring out how to work with the two string arrays passed into AddUsersToRoles.

Here’s what I think I need to do:

• First get the int UserID for the string[] usernames.
• Then get the int RoleID for string[] roles.
• Concat the two arrays together.
• Save the data to UserRole (a database that contains 3 columns: UserRoleID, UserID, RoleID).

Here’s what it looks like:

//override and implement a custom 'adduserstoroles' from the abstract method in RoleProvider

    public override void AddUsersToRoles(string[] usernames, string[] roleNames)
    {
        int[] userid;

        foreach(var username in usernames)
        {
            User user = AuthRepository.GetUser(username);
            //Error 1: An object reference is required for the non-static field, method, or property 'CustomAuth.AuthRepository.GetUser(string)'

            userid = user.ID;
            //Error 2: Cannot implicitly convert type 'int' to 'int[]'

        }

        int[] roleid;

        foreach(var rolename in roleNames)
        {
            Role role = db.Roles.Where(r => r.RoleName == rolename).SingleOrDefault();

            roleid = role.RoleID;
            //Error 3: Cannot implicitly convert type 'int' to 'int[]'

        }

        var userroles = userid.Concat(roleid).ToArray(); 

        foreach(var userrole in userroles)
        {
            UserRole userRole = new UserRole();
            db.UserRoles.Add(userRole);

        }

    }

Now, I don’t know if I’m going off the deep end on this. I’ve searched around for examples of how others have handled this type of thing but I can’t find any answers.

Answer 1

for error 2 and 3, you’re trying to assign a plain old int to an array of ints, which doesn’t make any sense. You probably just want to make userid and roleid List’s of ints

List<int> roleid = new List<int>();

Then in the foreach loops, you can just

roleid.Add(user.ID);

and

for error 1, it looks like AuthRepository isn’t a static class, so you’d need to create an instance of it before using it.

foreach (var username in usernames) 
{
    AuthRepository repository = new AuthRepository();
    repository.GetUser(username);
    ...
}