Get values from ArrayList in DnnUsers

Question

I have following ArrayList ..

RoleController objRoleController = new RoleController();

ArrayList UserList = objRoleController.GetUsersByRoleName(PortalSettings.PortalId, "Client");

I just want to fetch UserId and Display Name from UserList..What should i do???

Answer 1

Assuming you have a view model that consists of just the UserID and DisplayName like this:

public class UserViewModel
{
    public int Id { get; set; }
    public string DisplayName { get; set; }
}

Then you can use one of two methods depending on what version of DNN you are using:

public IEnumerable<UserViewModel> GetUsersBefore73()
{
    var objRoleController = new RoleController();
    ArrayList UserList = objRoleController
        .GetUsersByRoleName(PortalSettings.PortalId, "Client");

    var users = from user in UserList.OfType<UserInfo>().ToList<UserInfo>()
        select new UserViewModel() {
            Id = user.UserID,
            DisplayName = user.DisplayName
        };

    return users;
}

In DNN 7.3 we deprecated the instance method and instead moved to using a factory to get the role controller. We also stopped using an ArrayList and instead started using List. For 7.3 and above you can use the following code:

public IEnumerable<UserViewModel> GetUsersAfter73()
{
    IList<UserInfo> UserList = RoleController
        .Instance
        .GetUsersByRole(PortalSettings.PortalId, "Client");

    var users = from user in UserList
        select new UserViewModel() {
            Id = user.UserID,
            DisplayName = user.DisplayName
        };

    return users;
}