Update demo

Src/Asp.Net/SqliteTest/Demo/Demo4_Deleteable.cs

@@ -0,0 +1,48 @@
+using SqlSugar;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrmTest
+{
+    public class Demo4_Deleteable
+    {
+        public static void Init()
+        {
+            Console.WriteLine("");
+            Console.WriteLine("#### Deleteable Start ####");
+
+            SqlSugarClient db = new SqlSugarClient(new ConnectionConfig()
+            {
+                DbType = DbType.MySql,
+                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)));
+                    }
+                }
+            });
+            //by entity
+            db.Deleteable<Order>().Where(new Order() { Id = 1111 }).ExecuteCommand();
+
+            //by primary key
+            db.Deleteable<Order>().In(1111).ExecuteCommand();
+
+            //by primary key array
+            db.Deleteable<Order>().In(new int[] { 1111, 2222 }).ExecuteCommand();
+
+            //by expression
+            db.Deleteable<Order>().Where(it => it.Id == 11111).ExecuteCommand();
+
+            Console.WriteLine("#### Deleteable End ####");
+
+        }
+    }
+}