Added very nice DataGrid control

UserService.DatabaseLayer/Repository/BaseRepository.cs

@@ -22,10 +22,7 @@ namespace UserService.DatabaseLayer.Repository
         public virtual async Task<IReadOnlyList<T>> GetAllAsync(Expression<Func<T, bool>>? predicate = null, CancellationToken token = default)
         {
             await using var db = new UserServiceDbContext();
-
-            IQueryable<T> queryable = Context(db).Include(x => x.Parent);
-            if(predicate != null) queryable = queryable.Where(predicate);
-            return await queryable.ToListAsync(token);
+            return await Context(db).Include(x => x.Parent).WhereOrDefault(predicate).ToListAsync(token);
         }
 
         public async Task<T?> GetAsync(Expression<Func<T, bool>> predicate, CancellationToken token = default)