public async Task <Guid> Create(Models.Univers univ)
        {
            try
            {
                var context = CreateContext();
                var created = new Data.Univers
                {
                    Id            = univ.Id,
                    NomUnivers    = univ.NomUnivers,
                    TypoUniversId = univ.TypoUniversId,
                };
                var enr = await context
                          ._Univers
                          .AddAsync(created);

                await context.SaveChangesAsync();

                return(enr.Entity.Id);
            }
            catch (DbUpdateException e)
            {
                Console.WriteLine(e.Message);
                return(univ.Id);
            }
        }
        public async Task Delete(Models.Univers univ)
        {
            try
            {
                var context  = CreateContext();
                var toDelete = await context._Univers.FindAsync(univ.Id);

                if (toDelete != null)
                {
                    context._Univers.Remove(toDelete);
                    await context.SaveChangesAsync();
                }
            }
            catch (DbUpdateException e)
            {
                Console.WriteLine(e.Message);
            }
        }
        public async Task Update(Models.Univers univ)
        {
            try
            {
                var context  = CreateContext();
                var toUpdate = await context._Univers.FindAsync(univ.Id);

                if (toUpdate != null)
                {
                    toUpdate.Id            = univ.Id;
                    toUpdate.NomUnivers    = univ.NomUnivers;
                    toUpdate.TypoUniversId = univ.TypoUniversId;

                    await context.SaveChangesAsync();
                }
            }
            catch (DbUpdateException e)
            {
                Console.WriteLine(e.Message);
            }
        }