Dynamics CRM 365并发处理，支持组织服务和SQL

1.Dynamics CRM 365控制并发的处理方式：

方法一：在CRM创建实体（在数据库端控制，设置唯一聚集索引来处理）

步骤1：新增实体scw_entitylock，删除所有索引，新增唯一聚集索引idx_scw_name【scw_name】

步骤2：代码例子：LockEntity函数

        public void LockEntity(IOrganizationService adminservice, string lockid,Action action)
        {
            try
            {
                Entity en = new Entity("scw_entitylock");
                en["scw_name"] = lockid;
                adminservice.Create(en);

                action();
            }
            catch (Exception ex)
            {
                throw new InvalidPluginExecutionException("抱歉，系统正忙，请重新保存。");
            }
            finally
            {
                QueryExpression qe = new QueryExpression("scw_entitylock");
                qe.Criteria.AddCondition("scw_name", ConditionOperator.Equal, lockid);
                var ec = adminservice.RetrieveMultiple(qe);
                if (ec != null && ec.Entities.Count > 0)
                {
                    adminservice.Delete("scw_entitylock", ec.Entities[0].Id);
                }
            }
        }

步骤3：调用方式：

LockEntity(adminService, "xxxxxxxxx", () =>
{
     //do your code
});

 温馨提示：上面的模式只支持Plugin、workflow中使用，因为他们自带事务，才能在adminservice.Create(en);实现等待。

方法二：SQL的写法：那表scw_entitylock就可以不用实体的，直接新增表。

Begin Tran
Insert Into scw_entitylock(scw_name)
Select 'xxxxx'

方法三：在进程端处理：这个方案经过验证：发现另个用户同时在Plugin触发的时候，并没有效果

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    class Program
    {
        static void Main(string[] args)
        {
            Thread th = new Thread(new ParameterizedThreadStart(thread1));
            th.Name = "111";
            Thread th1 = new Thread(new ParameterizedThreadStart(thread2));
            th1.Name = "222";
            Thread th2 = new Thread(new ParameterizedThreadStart(thread3));
            th2.Name = "333";
            th.Start("11");
            th1.Start("11");
            th2.Start("11");

            Console.ReadKey();
        }
        static void Done(object name)
        {
            Console.WriteLine("开始执行" + Thread.CurrentThread.Name);
            lock (name.ToString())
            {
                Console.WriteLine("进入休眠区" + Thread.CurrentThread.Name);
                Thread.Sleep(20000);
                Console.WriteLine("推出休眠区"+ Thread.CurrentThread.Name);
            }
        }
        static void thread1(object name)
        {
            Done(name);
        }
        static void thread2(object name)
        {
            Done(name);
        }
        static void thread3(object name)
        {
            Done(name);
        }

    }
}