application中数据保存的问题
0
悬赏园豆：30
[已关闭问题]
<P>最近要实现一个功能，想保存用户最近查询的数据，网址：<A title=http://www.vvcha.cn/huoche.aspx href="http://www.vvcha.cn/huoche.aspx" target=_blank><FONT color=#800080>http://www.vvcha.cn/huoche.aspx</FONT></A> <BR></P>
<P>我的实现方法： <BR><BR>1. 定义了一个类A，在A里面定义了一个数组，提供了数据添加的方法add() 。 <BR>2. 在Application_Start里面示例化这个类，并把实例化后的对象保存到application里面。 <BR> A a=new A(); <BR> Application["zhuangtai"] = a; <BR><BR>3.在用户查询后，把a取出来，调用相关的方法 <BR> A a=(A)Application["zhuangtai"]; <BR> a.add(); //把用户输入的查询数据添加到类A的数组里面。 <BR>4.在需要显示的页面，取出a中的数据。 <BR> <BR>问题：发现用户查询的数据只能保存很短的时间，不知道什么原因？ </P>
<P>类A的代码<BR></P>
<DIV class=cnblogs_code><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/None.gif" align=top><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> </SPAN><SPAN style="COLOR: #0000ff">class</SPAN><SPAN style="COLOR: #000000"> A<BR><IMG id=Codehighlighter1_19_492_Open_Image onclick="this.style.display='none'; document.getElementById('Codehighlighter1_19_492_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_19_492_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_19_492_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align=top><IMG id=Codehighlighter1_19_492_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_19_492_Closed_Text').style.display='none'; 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document.getElementById('Codehighlighter1_170_204_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_170_204_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_170_204_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align=top><IMG id=Codehighlighter1_170_204_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_170_204_Closed_Text').style.display='none'; document.getElementById('Codehighlighter1_170_204_Open_Image').style.display='inline'; document.getElementById('Codehighlighter1_170_204_Open_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align=top> </SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000"> zhuangtai() </SPAN><SPAN id=Codehighlighter1_170_204_Closed_Text style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; 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其他回答(3)
0
Application
这么用才安全
Application.Lock()；
。。。。。。。。。。。。
Application.UnLock() ；
常理来说application不会丢失，除非应用程序重新启动了
0
可以存储的东西很多啊,cookies session application 比较优缺会发现....
0
建议用Cache来存储
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用application来保存数据，有时候是不安全的，很容易重新初始化。如果你在IIS的应用程序池里设置了多个圆的话，或者session的保存位置不在inproc时，都有可能丢失数据。
