Update demo

Src/Asp.Net/SqlServerTest/UserTestCases/Cases/OldDemo/DemoL_Snowflake.cs

@@ -0,0 +1,49 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest 
+{
+    public class DemoL_Snowflake
+    {
+        public static void Init()
+        {
+            Console.WriteLine("");
+            Console.WriteLine("#### DemoL_Snowflake ####");
+
+            SqlSugarClient db = new SqlSugarClient(new ConnectionConfig()
+            {
+                DbType = DbType.SqlServer,
+                ConnectionString = Config.ConnectionString,
+                InitKeyType = InitKeyType.Attribute,
+                IsAutoCloseConnection = true,
+                AopEvents = new AopEvents
+                {
+                    OnLogExecuting = (sql, p) =>
+                    {
+                        Console.WriteLine(sql);
+                        Console.WriteLine(string.Join(",", p?.Select(it => it.ParameterName + ":" + it.Value)));
+                    }
+                }
+            });
+            db.CodeFirst.InitTables<SnowflakeModel>();
+            Console.WriteLine(db.Queryable<SnowflakeModel>().Count());
+            var id= db.Insertable(new SnowflakeModel()
+            {
+                Name="哈哈"
+            }).ExecuteReturnSnowflakeId();
+            var ids = db.Insertable(db.Queryable<SnowflakeModel>().Take(10).ToList()).ExecuteReturnSnowflakeIdList();
+            Console.WriteLine(db.Queryable<SnowflakeModel>().Count());
+        }
+    }
+    public class SnowflakeModel 
+    {
+        [SugarColumn(IsPrimaryKey =true)]
+        public long Id { get; set; }
+
+        public string Name{get;set; }
+    }
+}