MVC 创建线程内的db单例

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using LSUnion.Site.Models;
 6 
 7 namespace LSUnion.Site.WebHelper
 8 {
 9     using System.Runtime.Remoting.Messaging;
10     public class Factory
11     {
12         public static LSUnionEntities GetDbContext()
13         {
14             object db = CallContext.GetData("LSUnionEntities");
15             if (db==null)
16             {
17                 db = new LSUnionEntities();
18                 CallContext.SetData("LSUnionEntities",db);
19             }
20             return db as LSUnionEntities;
21         }
22     }
23 }