private void Form1_Load(object sender, EventArgs e) { // Load type data var allLocationTypes = LocationsRepository.getAllLocationTypes().ToList(); comboLocationType.DataSource = allLocationTypes; comboLocationType.ValueMember = "ID"; comboLocationType.DisplayMember = "TypeName"; // Set user data var allUsers = UserRepository.GetAllUsers().Where(x => x.UserHasRole(RoleNames.TEACHER)).ToList(); comboUsers.DataSource = allUsers; comboUsers.ValueMember = "UserID"; comboUsers.DisplayMember = "UserName"; }