public Home(Usuario usuario) { _usuario = usuario; rolLogic = new RolLogic(); InitializeComponent(); List <Rol> roles = rolLogic.GetAll(); _roles = roles.ToDictionary(p => p.ID, p => p); cmbRoles.DataSource = new BindingSource(roles.ToDictionary(p => p.ID, p => p.Name), null); cmbRoles.DisplayMember = "Value"; cmbRoles.ValueMember = "Key"; }