Switched from IEnumerable to Queryable DBsets for filtering

ScrumTaskboard/Controllers/CategoriesController.cs

@@ -22,7 +22,8 @@ namespace ScrumTaskboard.Controllers
         [HttpGet]
         public async Task<ActionResult<IEnumerable<ScrumCategory>>> GetCategory()
         {
-            IEnumerable<ScrumCategory> filtered = _context.Categories;
+            var filtered = _context.Categories.AsQueryable();
+
             if (HttpContext.Request.Query["title"].ToString() != "")
             {
                 filtered = filtered.Where<ScrumCategory>(c => c.title.Contains(HttpContext.Request.Query["title"].ToString()));
@@ -37,8 +38,7 @@ namespace ScrumTaskboard.Controllers
 
             }
 
-
-            return filtered.ToList();
+            return await filtered.ToListAsync();
         }
 
         // GET: api/category/1