Update README.md

README.md

@@ -117,3 +117,41 @@ var result = queryable.ToListAsync().Result;
 var first = result.FirstOrDefault() as Author;
 Assert.AreEqual(first?.FirstName, "David");
 ```
+
+### How it can be used in a web api
+
+```csharp
+[HttpGet][Route("FindClients")]
+        public IHttpActionResult FindClients(string filterField = null, string filterValue = null, string sortProperty = "Id", int? page = null, int pageSize = 50)
+        {
+	    var ctx = new MyDbContext();
+            var query = ctx.Clients.AsQueryable();
+            
+            if (!string.IsNullOrEmpty(filterField) && !string.IsNullOrEmpty(filterValue))
+                query = query.Query(t => t.Contains(filterField, filterValue)).OrderBy(sortProperty);
+
+            //  count.
+            var clientCount = query.Count();
+            int? pages = null;
+
+            if (page.HasValue && pageSize > 0)
+            {
+                if (clientCount == 0)
+                    pages = 0;
+                else
+                    pages = clientCount / pageSize + (clientCount % pageSize != 0 ? 1 : 0);
+            }
+
+            if (page.HasValue)
+                query = query.Skip((page.Value-1) * pageSize).Take(pageSize);
+
+            var clients = query.ToList();
+
+            return Ok(new
+            {
+                total = clientCount,
+                pages = pages,
+                data = clients
+            });
+        }
+```