c# - 简单的 C# ASP.NET 缓存实现

Question

我需要建立一个 List<object>并缓存列表并能够附加到它。我还需要能够轻松地将它吹走并重新创建它。实现此目的的简单方法是什么？

Answer 1

也许是这样的？

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

public class MyListCache
{
    private List<object> _MyList = null;
    public List<object> MyList {
        get {
            if (_MyList == null) {
                _MyList = (HttpContext.Current.Cache["MyList"] as List<object>);
                if (_MyList == null) {
                    _MyList = new List<object>();
                    HttpContext.Current.Cache.Insert("MyList", _MyList);
                }
            }
            return _MyList;
        }
        set {
            HttpContext.Current.Cache.Insert("MyList", _MyList);
        }
    }

    public void ClearList() {
        HttpContext.Current.Cache.Remove("MyList");
    }
}

至于如何使用......

// Get an instance
var listCache = new MyListCache();

// Add something
listCache.MyList.Add(someObject);

// Enumerate
foreach(var o in listCache.MyList) {
  Console.WriteLine(o.ToString());
}  

// Blow it away
listCache.ClearList();