From a65d13ef7c4b80fbfcd9128c590d80759859dea1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9E=9C=E7=B3=96=E7=BD=91?= <610262374@qq.com>
Date: Sun, 10 Oct 2021 22:37:27 +0800
Subject: [PATCH] Update README.md

---
 README.md | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/README.md b/README.md
index 1dbaf0581..24abca4ed 100644
--- a/README.md
+++ b/README.md
@@ -102,3 +102,33 @@ db.BeginTran();
 
 db.CommitTran();
 ```
+### Singleton Pattern
+Implement transactions across methods
+```CS
+public static SqlSugarScope Db = new SqlSugarScope(new ConnectionConfig()
+ {
+            DbType = SqlSugar.DbType.SqlServer,
+            ConnectionString = Config.ConnectionString,
+            IsAutoCloseConnection = true 
+  },
+  db=> {
+             //单例参数配置，所有上下文生效
+            db.Aop.OnLogExecuting = (s, p) =>
+            {
+                Console.WriteLine(s);
+            };
+ });
+ 
+ 
+  using (var tran = Db.UseTran())
+  {
+          
+               //业务代码
+               new Test2().Insert(XX);
+               new Test1().Insert(XX);
+               .....出错会自动回滚
+                ....
+                         
+             tran.CommitTran();//这个提交不能漏掉
+ }
+```