Update demo

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

@@ -4,7 +4,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
-
+using SqlSugar;
 namespace OrmTest
 {
     public class DemoB_Aop
@@ -38,11 +38,32 @@ namespace OrmTest
                 return new KeyValuePair<string, SugarParameter[]>(sql, pars);
             };
 
+            db.Aop.OnDiffLogEvent = it =>//Get data changes
+            {
+                var editBeforeData = it.BeforeData;
+                var editAfterData = it.AfterData;
+                var sql = it.Sql;
+                var parameter = it.Parameters;
+                var businessData = it.BusinessData;
+                var time = it.Time;
+                var diffType = it.DiffType;//enum insert 、update and delete  
+                Console.WriteLine(editBeforeData[0].Columns[1].Value);
+                Console.WriteLine("to");
+                Console.WriteLine(editAfterData[0].Columns[1].Value);
+                //Write logic
+            };
+
+
 
      
             db.Queryable<Order>().ToList();
             db.Queryable<OrderItem>().ToList();
 
+            //OnDiffLogEvent
+            var data = db.Queryable<Order>().First();
+            data.Name = "changeName";
+            db.Updateable(data).EnableDiffLogEvent().ExecuteCommand();
+
             Console.WriteLine("#### Aop End ####");
         }
     }