MVC中使用 事物

 

1,MVC中所有的控制器都 继承自 Controller  

2，我们要对Controller进行处理  就要写一个类来继承自Controller    重写方法   加入自己的处理程序

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using CDS.CustomAttribute;
using System.Transactions;

namespace CDS.Manager
{
    [HandleError]
    public class CDSController : Controller
    {
        #region action发生异常
        /// <summary>
        /// action发生异常
        /// </summary>
        /// <param name="filterContext"></param>
        protected override void OnException(ExceptionContext filterContext)
        {
            Session["actionException"] = "";
            base.OnException(filterContext);
        }
        #endregion

        #region 执行action
        /// <summary>
        /// 执行action
        /// </summary>
        protected override void ExecuteCore()
        {
            if (IsTransationAction())//当前action使用事务
            {
                using (TransactionScope scope = new TransactionScope())
                {
                    Session["actionException"] = null;
                    base.ExecuteCore();

                    if (Session["actionException"] == null)//没有发生异常才提交数据库
                    {
                        scope.Complete();
                    }
                    Session["actionException"] = null;
                }
            }//end action使用事务
            else
            {
                base.ExecuteCore();
            }
        }
        #endregion

        #region 判断当前请求的action是否使用事务
        /// <summary>
        /// 判断当前请求的action是否使用事务
        /// </summary>
        /// <returns></returns>
        public bool IsTransationAction()
        {
            bool bTrans = false;

            try
            {
                ControllerContext controllerContext = new ControllerContext(new System.Web.Routing.RequestContext(HttpContext, RouteData), this);

                string actionName = RouteData.GetRequiredString("action");
                Type tControl = controllerContext.Controller.GetType();

                ControllerDescriptor controllerDescriptor = new ReflectedControllerDescriptor(tControl);
                ActionDescriptor actionDescriptor = controllerDescriptor.FindAction(controllerContext, actionName);


                object[] attrTrans = actionDescriptor.GetCustomAttributes(typeof(IsTransationAction), false);

                if (attrTrans != null && attrTrans.Length > 0 && ((CDS.CustomAttribute.IsTransationAction)(attrTrans[0])).IsTransaction)
                {
                    bTrans = true;
                }
            }
            catch
            {

            }

            return bTrans;
        }


        #endregion
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace CDS.CustomAttribute
{
    [AttributeUsage(AttributeTargets.Method, AllowMultiple = true)]
    public class IsTransationAction : Attribute
    {
        private bool b_isTransaction = false;

        public IsTransationAction(bool isTransaction)
        {
            this.b_isTransaction = isTransaction;
        }

        public bool IsTransaction
        {
            get
            {
                return (this.b_isTransaction);
            }
            set
            {
                this.b_isTransaction = value;
            }
        }
    }
}