是什么造成这种＆QUOT;长度无效的BASE-64字符数组＆QUOT; [英] What causing this "Invalid length for a Base-64 char array"

问题描述

我很少去这里。我不能重现这个地方，但是当用户得到的错误，我得到一个自动的电子邮件异常通知。

I have very little to go on here. I cant reproduce this locally, but when users get the error I get an auto email exception notification.

消息：长度无效的BASE-64字符数组

Message: Invalid length for a Base-64 char array.

调用堆栈：在System.Convert.FromBase64String（String s）将在System.Web.UI.ObjectStateFormatter.Deserialize（字符串inputString）在System.Web.UI.ObjectStateFormatter.System.Web。 UI.IStateFormatter.Deserialize（字符串serializedState）在System.Web.UI.Util.DeserializeWithAssert（IStateFormatter格式，字符串serializedState）在System.Web.UI.HiddenFieldPageStatePersister.Load（）

Call Stack: at System.Convert.FromBase64String(String s) at System.Web.UI.ObjectStateFormatter.Deserialize(String inputString) at System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter.Deserialize(String serializedState) at System.Web.UI.Util.DeserializeWithAssert(IStateFormatter formatter, String serializedState) at System.Web.UI.HiddenFieldPageStatePersister.Load()

我倾向于认为这是与被分配到视图状态数据的问题。 例如：

I'm inclined to think there is a problem with data that is being assigned to viewstate. For example:

List<int> SelectedActionIDList = GetSelectedActionIDList();
ViewState["_SelectedActionIDList"] = SelectedActionIDList;

不能够在当地重现错误让人难以猜测错误的来源。

Not being able to reproduce the error locally makes it difficult to guess what the source of the error is.

如果任何人有过与此错误的任何经历，我真的想知道你发现了。

If anyone has had any experience with this error I would really like to know what you found out.

推荐答案

我见过造成和过积极的内容过滤设备/防火墙（尤其是与K-12教育机构打交道的好户型视图状态的组合，这个错误）。

I've seen this error caused by the combination of good sized viewstate and over aggressive content-filtering devices/firewalls (especially when dealing with K-12 Educational institutions).

我们的工作围绕它通过在SQL Server存储视图状态。去之前这条路线，我会建议您尝试通过不存储任何大的它，并把它关闭所有控制哪些不需要它限制你使用视图状态。

We worked around it by storing Viewstate in SQL Server. Before going that route, I would recommend trying to limit your use of viewstate by not storing anything large in it and turning it off for all controls which do not need it.

存储的ViewState在SQL Server中的参考文献：
MSDN - 概述PageStatePersister
ASP联盟 - 简单的方法来视图状态存储在SQL Server
<一href="http://www.$c$cproject.com/Articles/8001/ViewState-Provider-an-implementation-using-Provide">$c$c项目 - ViewState的供应商模式

References for storing ViewState in SQL Server:
MSDN - Overview of PageStatePersister
ASP Alliance - Simple method to store viewstate in SQL Server
Code Project - ViewState Provider Model

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