PWA离线缓存简单

实现简单的离线缓存页面和数据，google浏览器把页面添加到桌面快速访问

现阶段只有google、Firefox等部分浏览器支持此效果

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

namespace PWATest
{
    public class Global : System.Web.HttpApplication
    {
        protected void Application_Start（object sender EventArgs e）
        {
        }
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-06-08 11:12  PWATest\
     目录           0  2018-06-08 11:12  PWATest\.vs\
     目录           0  2018-06-08 11:12  PWATest\.vs\PWATest\
     目录           0  2018-06-08 11:12  PWATest\.vs\PWATest\v14\
     文件       75776  2018-06-08 11:17  PWATest\.vs\PWATest\v14\.suo
     目录           0  2018-06-08 11:12  PWATest\.vs\config\
     文件       85880  2018-04-26 14:28  PWATest\.vs\config\applicationhost.config
     目录           0  2018-06-08 11:13  PWATest\PWATest\
     目录           0  2018-06-08 11:17  PWATest\PWATest\App_Data\
     文件        5939  2018-04-26 14:28  PWATest\PWATest\ApplicationInsights.config
     文件          91  2018-04-26 14:28  PWATest\PWATest\Global.asax
     文件         337  2018-04-26 14:28  PWATest\PWATest\Global.asax.cs
     目录           0  2018-06-08 11:17  PWATest\PWATest\Models\
     文件       11066  2018-06-04 10:12  PWATest\PWATest\PWATest.csproj
     文件        1239  2018-06-04 10:12  PWATest\PWATest\PWATest.csproj.user
     目录           0  2018-06-08 11:12  PWATest\PWATest\Properties\
     文件        1307  2018-04-26 14:28  PWATest\PWATest\Properties\AssemblyInfo.cs
     目录           0  2018-06-08 11:12  PWATest\PWATest\Properties\PublishProfiles\
     文件        1089  2018-05-30 13:58  PWATest\PWATest\Properties\PublishProfiles\PWAtest.pubxml
     文件        5199  2018-05-30 17:35  PWATest\PWATest\Properties\PublishProfiles\PWAtest.pubxml.user
     文件        2558  2018-06-08 11:13  PWATest\PWATest\ServiceWorker.js
     文件          91  2018-05-31 16:32  PWATest\PWATest\UserData.ashx
     文件        1648  2018-05-31 16:41  PWATest\PWATest\UserData.ashx.cs
     文件        1211  2018-05-31 17:27  PWATest\PWATest\UserList.html
     文件        1245  2018-04-26 14:28  PWATest\PWATest\Web.Debug.config
     文件        1306  2018-04-26 14:28  PWATest\PWATest\Web.Release.config
     文件        1905  2018-05-31 16:31  PWATest\PWATest\Web.config
     目录           0  2018-06-08 11:12  PWATest\PWATest\bin\
     文件        5939  2018-04-26 14:28  PWATest\PWATest\bin\ApplicationInsights.config
     文件     1976568  2016-11-30 16:07  PWATest\PWATest\bin\Microsoft.AI.Agent.Intercept.dll
     文件       65792  2016-12-07 11:45  PWATest\PWATest\bin\Microsoft.AI.DependencyCollector.dll
............此处省略278个文件信息