public async Task <Guid> Create(Models.Caracteristiques cara)
        {
            try
            {
                var context = CreateContext();
                var created = new Data.Caracteristiques
                {
                    Id        = cara.Id,
                    UniversId = cara.UniversId,
                    NomCarac  = cara.NomCarac,
                };
                var enr = await context
                          ._Caracteristiques
                          .AddAsync(created);

                await context.SaveChangesAsync();

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

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

                if (toUpdate != null)
                {
                    toUpdate.Id        = cara.Id;
                    toUpdate.UniversId = cara.UniversId;
                    toUpdate.NomCarac  = cara.NomCarac;

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