DB Context Approach

Hi All,

We are planning to create Angular .NET core project, so i am unable to decide what will be best approach to implement DB Context below is my current.

But i invite everyone to share thier best experience.

Dal 

public partial class ANGWorksContext : DbContext
    {
        //public ANGWorksContext()
        //{
        //}     

        public ANGWorksContext(DbContextOptions<ANGWorksContext> options)
            : base(options)
        {
        }

        public virtual DbSet<Dept> Dept { get; set; }

BAL 

  public class DeptService : IDeptService
    {
        //private ANGWorksContext ANGDB = new ANGWorksContext();

       
        private readonly ANGWorksContext _context;

        public DeptService(ANGWorksContext context)
        {
            _context = context;           
        }


        public List<Dept_View> GetDepts()
        {
            //AutoMapper for Multiple Initialiser Generic
            var dept = Mapper.Map<List<Dept_View>>(GetDepartment());
            //Individual Mapper
            //var dept = Mapper.Map<List<Dept>, List<Dept_View>>(GetDepartment());
            return dept;
        }
        public List<Dept> GetDepartment()
        {
            try
            {
                 var dept = from d in _context.Dept select d;
                 return dept.ToList();
            }
            catch (Exception)
            {

                throw;
            }
            //finally
            //{
            //    _context.Dispose();
            //}
        }

    }

COntroller 

namespace AngCoreData.Controllers
{
    public class DeptController : Controller
    {
        //DeptService objDeptService = new DeptService();

        private IDeptService _deptservice;

        public DeptController(IDeptService deptService)
        {
            _deptservice = deptService;
        }


        [HttpGet]
        [Route("api/Dept/Index")]
        public IEnumerable<Dept_View> Index()
        {
            var d = _deptservice.GetDepts();

            return d.ToList();            
            
            //var dept = objDeptService.GetDepts();

            //return dept;
        }
    }
}

Startup.CS

   public void ConfigureServices(IServiceCollection services)
        {

      
            services.AddDbContext<AngDalLib.Models.ANGWorksContext>(options => options.UseSqlServer(Configuration.GetConnectionString("ANGWorksContext"))); 
            services.AddMvc();

            Mapper.Initialize(c => c.AddProfile<MapperProfile>());

            services.AddTransient<IDeptService, DeptService>();            
        }

Many Thanks,

Shabb