急 ！在线等 有关缓存的问题！

Question

如何获取所有的缓存项
 public static DataSet GetCacheByKey(string key)
 {
        //如何写
}

Answer 1

/// <summary>
        /// 获取所有缓存对象的key
        /// </summary>
        /// <returns>返回一个IList对象</returns>
        public static IList<string> GetKeys()
        {
            List<string> keys = new List<string>();
            IDictionaryEnumerator cacheItem =HttpRuntime.Cache.GetEnumerator();
            while (cacheItem.MoveNext())
            {
                keys.Add(cacheItem.Key.ToString());
            }
            return keys.AsReadOnly();
        }

Answer 2

如果你知道怎么添加缓存 就应该怎么获取return HttpRuntime.Cache[key] as DataSet

Answer 3

http://www.cnblogs.com/wenanry/archive/2008/08/13/1267028.html

Answer 4

 <table border="0" rules="none" cellpadding="0" cellspacing="0" class="tablestyle1"
        width="100%">
        <tr class="head">
            <td width="50">
                选择
            </td>
            <td width="200">
                缓存项
            </td>
            <td width="100">
                创建时间
            </td>
            <td>
                持续时间(秒)
            </td>
            <td width="70">
                绝对时间
            </td>
            <td width="50">
                缓存依赖
            </td>
            <td width="50">
                删除
            </td>
        </tr>
        <asp:Repeater ID="rptList" runat="server">
            <ItemTemplate>
                <tr onmouseout='this.bgColor="#ffffff"' onmouseover='this.bgColor="#edf3f4"'>
                    <td align="center">
                            <input type="checkbox" id="chkKeyID" name="chkKeyID" value="<%#Eval("ID") %>" />
                    </td>
                    <td align="center">
                            <%#Eval("Key") %>
                    </td>
                    <td align="center">
                        <%#Eval("CreateTime")%>
                    </td>
                    <td align="center">
                        <%#Eval("IntMinutes") %>
                    </td>
                    <td align="center">
                        <%#Eval("Absolute") %>
                    </td>
                    <td align="center">
                        <%#Eval("Dependercy")%>
                    </td>
                    <td align="center">
                        <asp:LinkButton ID="lbDel" runat="server" CommandArgument='<%#Eval("key")%>' CommandName="Del"
                            OnClientClick="return confirm('确认删除当前数据吗？');" Text="删除"></asp:LinkButton>
                    </td>
                </tr>
            </ItemTemplate>
        </asp:Repeater>

Answer 5

都看清楚再回答啊 ...要的是获取所有的缓存项 及其相关信息 形成一个DataSet

Answer 6

写个demo 你参考下，我缓存的是一个DataTable 对象    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            bindGrid();
        }
    }    /// <summary>
    /// 获取用户信息
    /// </summary>
    DataTable BindUserMeg(string name)
    {
        DataTable dtUser = bll.GetUserMsg(name);
        return dtUser;
    }
    void bindGrid()
    { //查询记录缓存 DataTable
        DataTable dt = BindUserMeg("");
        Cache.Insert("DSN", dt, null, DateTime.Now.AddMinutes(2), System.Web.Caching.Cache.NoSlidingExpiration);        GridView1.DataSource = Cache["DSN"];
        GridView1.DataBind();
    }
    protected void Button1_Click(object sender, EventArgs e)
    {//linq模糊查询       DataTable dtA = (DataTable)Cache["DSN"];        var query = (from a in dtA.AsEnumerable()
                    let username = a.Field<string>("OrderTrackerUserName")
                    where username.Contains(TextBox1.Text)
                    select new {
                                    OrderTrackerID=a.Field<int>("OrderTrackerID"),
                                    OrderTrackerUserName =username,
                                    OrderTrackerRealName = a.Field<string>("OrderTrackerRealName")
                               });        GridView1.DataSource = query;
        GridView1.DataBind();
    }