我百度了 找了半天没找到解决办法 各位大侠 谁指点迷津 一下啊 我都要郁闷死了，
我已经把服务器上的数据库 和 上头给的源码 编译运行了 但是 就是没找到这个错误。可是服务器上就是有这个错误。 功能是点击html button 激发js方法 传入参数 跳转到另外一个页面，我本地测试毫无错误，服务器上就出现这个错误。。
Server Error in '/' Application.--------------------------------------------------------------------------------
StartIndex cannot be less than zero.
Parameter name: startIndex
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.ArgumentOutOfRangeException: StartIndex cannot be less than zero.
Parameter name: startIndex
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:
[ArgumentOutOfRangeException: StartIndex cannot be less than zero.
Parameter name: startIndex]
System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy) +2848069
System.String.Substring(Int32 startIndex, Int32 length) +11
JCreatorOA.workmangagezdgz.itemplan.Page_Load(Object sender, EventArgs e) in E:社区\jcoanewzhengwu包含新邮箱版本201008201721\J6oa\workmangagezdgz\itemplan.aspx.cs:132
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
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42
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参数StartIndex值有问题，是负数。是不是做除数了？
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看错了，不是做除数。。 是不是做什么索引值了
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额 不是啊 ,没有什么索引值啊。。今天修改了一条错误数据 就好了。。。谢谢你了