diff --git a/Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs b/Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs
index 8b5a461f5..c3d17240e 100644
--- a/Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs
+++ b/Src/Asp.Net/SqlServerTest/Demo/Demo1_Queryable.cs
@@ -11,14 +11,49 @@ namespace OrmTest
 
         public static void Init()
         {
+            ConditionScreening();
             Async();
         }
 
+        private static void ConditionScreening()
+        {
+            Console.WriteLine("");
+            Console.WriteLine("#### Condition Screening Start ####");
+
+            SqlSugarClient db = GetInstance();
+            //id=@id
+            var list = db.Queryable<Order>().Where(it => it.Id == 1).ToList();
+            //id=@id or name like '%'+@name+'%'
+            var list2 = db.Queryable<Order>().Where(it => it.Id == 1 || it.Name.Contains("jack")).ToList();
+
+
+            //Create expression 
+            var exp = Expressionable.Create<Order>()
+                            .And(it => it.Id == 1)
+                            .Or(it => it.Name.Contains("jack")).ToExpression();
+            var list3 = db.Queryable<Order>().Where(exp).ToList();
+
+            Console.WriteLine("#### Condition Screening End ####");
+        }
+
         private static void Async()
         {
             Console.WriteLine("");
             Console.WriteLine("#### Async Start ####");
-            SqlSugarClient db = new SqlSugarClient(new ConnectionConfig()
+
+            SqlSugarClient db = GetInstance();
+            var task1 = db.Queryable<Order>().FirstAsync();
+            var task2 = db.Queryable<Order>().Where(it => it.Id == 1).ToListAsync();
+
+            task1.Wait();
+            task2.Wait();
+
+            Console.WriteLine("#### Async End ####");
+        }
+
+        private static SqlSugarClient GetInstance()
+        {
+            return new SqlSugarClient(new ConnectionConfig()
             {
                 DbType = DbType.SqlServer,
                 ConnectionString = Config.ConnectionString,
@@ -29,18 +64,10 @@ namespace OrmTest
                     OnLogExecuting = (sql, p) =>
                     {
                         Console.WriteLine(sql);
+                        Console.WriteLine(string.Join(",", p?.Select(it => it.ParameterName + ":" + it.Value)));
                     }
                 }
             });
-
-
-            var task1 = db.Queryable<Order>().FirstAsync();
-            var task2 = db.Queryable<Order>().Where(it => it.Id == 1).ToListAsync();
-
-            task1.Wait();
-            task2.Wait();
-
-            Console.WriteLine("#### Async End ####");
         }
     }
 }