public async Task<bool> Update(UnDisplayStatus item)
        {
            var dis = await IdExist(item.Id);
            dis.Name = item.Name;

            _db.Entry(dis).State = EntityState.Modified;
            try
            {
                await _db.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException exception)
            {
                throw new DbUpdateConcurrencyException(exception.Message);
            }

            return true;
        }
 public async Task<UnDisplayStatus> Add(UnDisplayStatus item)
 {
     var dis = new UnDisplayStatus
     {
         Name = item.Name
     };
     
     dis = _db.UnDisplayStatuss.Add(dis);
     try
     {
         await _db.SaveChangesAsync();
         return dis;
     }
     catch (DbUpdateConcurrencyException exception)
     {
         throw new DbUpdateConcurrencyException(exception.Message);
     }
 }