[英]Getting “Index was outside the bounds of the array” exception in server, local works fine
我在服务器中收到此异常:
"Index was outside the bounds of the array."
[IndexOutOfRangeException: Index was outside the bounds of the array.]
pcdirectory.facultyPage.Page_Load(Object sender, EventArgs e) +2340
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs e) +91
System.Web.UI.Control.LoadRecursive() +74
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207
但是在本地运行代码时,我没有收到任何异常或错误。 知道什么会导致这种情况吗?
这是 Page_Load 方法的代码副本:
Sub Page_Load(sender As Object, e As EventArgs)
if not isPostBack then
dim smsDBConnection as new SqlConnection(AppSettings("smsDBconnection"))
dim SQL as new stringBuilder()
dim command as new sqlCommand()
dim reader as sqldataReader
dim directoryGlobal as new directoryGloablFunctions()
try
command.connection = smsDBConnection
command.commandType = commandType.storedProcedure
smsDBConnection.open()
SQL.append("get_all_Numbers")
command.commandText = SQL.toString()
reader = command.executeReader()
drpClass.datasource = reader
drpClass.dataTextField = "Number"
drpClass.dataValueField = "Number"
drpClass.dataBind()
catch ex as exception
directoryGlobal.sendErrorMessageEmail(ex.message,SQL.toString(),ex.stackTrace,"DIRECTORY ERROR")
directoryGlobal.messageBox("An error has occurred on this page and been reported to the administrator." & vbcrlf & "Please try again later or contact technical support",me)
smsDBConnection.close()
end try
smsDBconnection.Close()
end if
end sub
好吧,您的堆栈跟踪指向 Page_Load 事件,并且因为我只能看到对字典/数组的一个引用,所以问题很可能就在那里。
这条线
dim smsDBConnection as new SqlConnection(AppSettings("smsDBconnection"))
很可能是问题所在。 请检查您的 AppSettings 并可能创建一个仅用于一个目的的测试文件 - 访问 AppSettings 并显示分配给键“smsDBconnection”的值以确保其正常工作。 如果它有效,那么您目前没有向我们展示一些不同的东西。
当您尝试通过不存在的索引访问数组元素时,您收到的错误是典型的错误消息。 例如,当您的集合有 5 个元素并且您尝试引用第 6 个元素时。
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