很郁闷的报错

[wcy_li]

用asp.net 2.0写的一个程序 怎么会老报
Server Error in '/' Application.
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Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
info.web.leave.Page_Load(Object sender, EventArgs e) +148
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +34
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061
这个错误啊 。。
更郁闷的是，点击连接进入这个页面的时候 有时候会报这个错误、有时候又正常。
所有单步调试没一点问题。
有那位大侠知道帮忙解决下，快崩溃了...

[chen_ya_ping]

你调试一下，注意引用变量的地方，是不是为null

[xingshungames]

是不是你后台进行request.querying["xxx"]接受参数数据的时候。其数据是null。而你使用了ToString()

[wcy_li]

我单步调试没有问题。网站发布后，经常就会出现这样的问题。

[wcy_li]

我郁闷啊...这是为什么呢.
偶尔报错!太他吗难了!