ASP.NET -- WebForm -- 缓存Cache的使用
把数据从数据库或文件中读取出来,放在内存中,后面的用户直接从内存中取数据,速度快。适用于经常被查询、但不经常变动的数据。
1. Test5.aspx文件与Test5.aspx.cs文件
<span style="color: #0000ff"><!
<span style="color: #ff00ff">DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"<span style="color: #0000ff">><span style="color: #0000ff"><
<span style="color: #800000">html <span style="color: #ff0000">xmlns<span style="color: #0000ff">="http://www.w3.org/1999/xhtml"<span style="color: #0000ff">><span style="color: #0000ff"><<span style="color: #800000">head <span style="color: #ff0000">runat<span style="color: #0000ff">="server"<span style="color: #0000ff">>
<span style="color: #0000ff"><<span style="color: #800000">title<span style="color: #0000ff">></<span style="color: #800000">title<span style="color: #0000ff">>
<span style="color: #0000ff"></<span style="color: #800000">head<span style="color: #0000ff">>
<span style="color: #0000ff"><<span style="color: #800000">body<span style="color: #0000ff">>
<span style="color: #0000ff"><<span style="color: #800000">form <span style="color: #ff0000">id<span style="color: #0000ff">="form1"<span style="color: #ff0000"> runat<span style="color: #0000ff">="server"<span style="color: #0000ff">>
<span style="color: #0000ff"><<span style="color: #800000">div<span style="color: #0000ff">>
<span style="color: #0000ff"><<span style="color: #800000">asp:Label <span style="color: #ff0000">ID<span style="color: #0000ff">="LabelCurrentTime"<span style="color: #ff0000"> runat<span style="color: #0000ff">="server"<span style="color: #ff0000"> Text<span style="color: #0000ff">=""<span style="color: #0000ff">></<span style="color: #800000">asp:Label<span style="color: #0000ff">>
<span style="color: #0000ff"><<span style="color: #800000">asp:Button <span style="color: #ff0000">ID<span style="color: #0000ff">="Button1"<span style="color: #ff0000"> runat<span style="color: #0000ff">="server"<span style="color: #ff0000"> Text<span style="color: #0000ff">="添加值至缓存"<span style="color: #ff0000"> onclick<span style="color: #0000ff">="Button1_Click" <span style="color: #0000ff">/>
<span style="color: #0000ff"><<span style="color: #800000">asp:Button <span style="color: #ff0000">ID<span style="color: #0000ff">="Button2"<span style="color: #ff0000"> runat<span style="color: #0000ff">="server"<span style="color: #ff0000"> Text<span style="color: #0000ff">="移除缓存"<span style="color: #ff0000"> onclick<span style="color: #0000ff">="Button2_Click" <span style="color: #0000ff">/><<span style="color: #800000">br <span style="color: #0000ff">/>
<span style="color: #0000ff"><<span style="color: #800000">asp:ListBox <span style="color: #ff0000">ID<span style="color: #0000ff">="ListBox1"<span style="color: #ff0000"> runat<span style="color: #0000ff">="server"<span style="color: #0000ff">></<span style="color: #800000">asp:ListBox<span style="color: #0000ff">>
<span style="color: #0000ff"></<span style="color: #800000">div<span style="color: #0000ff">>
<span style="color: #0000ff"></<span style="color: #800000">form<span style="color: #0000ff">>
<span style="color: #0000ff"></<span style="color: #800000">body<span style="color: #0000ff">>
<span style="color: #0000ff"></<span style="color: #800000">html<span style="color: #0000ff">>