Update Demo

Src/Asp.Net/SqlServerTest/Demo/Demo1_SqlSugarClient.cs

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Threading.Tasks;
 using SqlSugar;
 namespace OrmTest
 {
@@ -10,9 +11,50 @@ namespace OrmTest
 
         public static void Init()
         {
-            DistributedTransactionExample();
+            SingletonPattern();//单例
+            DistributedTransactionExample();//分布式事务
         }
 
+        private static void SingletonPattern()
+        {
+            Console.WriteLine("");
+            Console.WriteLine("#### Singleton Pattern Start ####");
+            Console.WriteLine("Db_Id:" + singleDb.ContextID);
+            Console.WriteLine("Db_Id:" + singleDb.ContextID);
+            var task = new Task(() =>
+            {
+                Console.WriteLine("Task DbId:" + singleDb.ContextID);
+                new Task(() =>
+                {
+                    Console.WriteLine("_Task_Task DbId:" + singleDb.ContextID);
+                    Console.WriteLine("_Task_Task DbId:" + singleDb.ContextID);
+
+                }).Start();
+                Console.WriteLine("Task DbId:" + singleDb.ContextID);
+            });
+            task.Start();
+            task.Wait();
+            System.Threading.Thread.Sleep(500);
+            Console.WriteLine(string.Join(",", singleDb.TempItems.Keys));
+
+            Console.WriteLine("#### Singleton Pattern end ####");
+        }
+
+        static SqlSugarClient singleDb = new SqlSugarClient(
+            new ConnectionConfig()
+            {
+                ConfigId = 1,
+                DbType = DbType.SqlServer,
+                ConnectionString = Config.ConnectionString,
+                InitKeyType = InitKeyType.Attribute,
+                IsAutoCloseConnection=true,
+                AopEvents = new AopEvents()
+                {
+                    OnLogExecuting = (sql, p) => { Console.WriteLine(sql); }
+                }
+            });
+
+
         private static void DistributedTransactionExample()
         {
             Console.WriteLine("");
@@ -68,5 +110,8 @@ namespace OrmTest
 
             Console.WriteLine("#### Distributed TransactionExample End ####");
         }
+
+
+
     }
 }

Src/Asp.Net/SqlSugar/Entities/ConnectionConfig.cs

@@ -53,7 +53,7 @@ namespace SqlSugar
         public SugarDebugger Debugger { get; set; }
 
         [JsonIgnore]
-        public AopEvents AopEvents = new AopEvents();
+        public AopEvents AopEvents { get;set; }
     }
     public class AopEvents
     {

Src/Asp.Net/SqlSugar/Infrastructure/SqlSugarAccessory.cs

@@ -24,7 +24,7 @@ namespace SqlSugar
         }
 
         public ConnectionConfig CurrentConnectionConfig { get; set; }
-        public Dictionary<string, object> TempItems { get; set; }
+        public Dictionary<string, object> TempItems { get { if (_TempItems == null) { _TempItems = new Dictionary<string, object>(); }  return _TempItems; } set=>_TempItems=value; }
         public bool IsSystemTablesConfig { get { return this.CurrentConnectionConfig.InitKeyType == InitKeyType.SystemTable; } }
         public Guid ContextID { get; set; }
         internal bool IsAsyncMethod { get; set; }
@@ -37,6 +37,7 @@ namespace SqlSugar
         #endregion
 
         #region Fields       
+        public Dictionary<string, object> _TempItems;
         public QueueList _Queues;
         protected ISqlBuilder _SqlBuilder;
         protected ISqlSugarClient _Context { get; set; }

Src/Asp.Net/SqlSugar/SqlSugarClient.cs

@@ -71,7 +71,7 @@ namespace SqlSugar
 
         public QueueList Queues { get => this.Context.Queues; set => this.Context.Queues = value; }
 
-        public Dictionary<string, object> TempItems { get => this.Context.TempItems??new Dictionary<string, object>(); set => this.Context.TempItems = value; }
+        public Dictionary<string, object> TempItems { get => this.Context.TempItems; set => this.Context.TempItems = value; }
         public IContextMethods Utilities { get => this.Context.Utilities; set => this.Context.Utilities = value; }
         public IAdo Ado => this.Context.Ado;
 
@@ -672,7 +672,14 @@ namespace SqlSugar
 
         private void InitContext(ConnectionConfig config)
         {
+            var aopIsNull = config.AopEvents == null;
+            if (aopIsNull)
+            {
+                config.AopEvents = new AopEvents();
+            }
             _Context = new SqlSugarContext(config);
+            if (!aopIsNull)
+                _Context.Ado.IsEnableLogEvent = true;
             this.CurrentConnectionConfig = config;
             _ThreadId = Thread.CurrentThread.ManagedThreadId.ToString();
             if (_MappingColumns == null)