Update demo

Src/Asp.NetCore2/SqlSeverTest/SqliteTest/UnitTest/UQueryableAsync.cs

@@ -0,0 +1,43 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using SqlSugar;
+namespace OrmTest
+{
+    public partial class NewUnitTest
+    {
+        public static void QueryableAsync()
+        {
+            q1();
+            q2();
+            q3();
+        }
+
+        private static void q1()
+        {
+            RefAsync<int> total = 0;
+            var count = Db.Queryable<Order>().Count();
+            Task t = Db.Queryable<Order>().ToPageListAsync(1, 2, total);
+            t.Wait();
+            UValidate.Check(count, total.Value, "QueryableAsync");
+        }
+        private static void q2()
+        {
+            RefAsync<int> total = 0;
+            var count = Db.Queryable<Order>().Count();
+            Task t = Db.Queryable<Order>().ToDataTablePageAsync(1, 2, total);
+            t.Wait();
+            UValidate.Check(count, total.Value, "QueryableAsync");
+        }
+        private static void q3()
+        {
+            RefAsync<int> total = 0;
+            var count = Db.Queryable<Order>().Count();
+            Task t = Db.Queryable<Order>().ToJsonPageAsync(1, 2, total);
+            t.Wait();
+            UValidate.Check(count, total.Value, "QueryableAsync");
+        }
+    }
+}