System.Web.UI.ViewStateException，无效的视图状态

我的网站每天都会抛出以下异常，但我找不到解决方案。 我在网络上做了很少的研究，这就是我到目前为止所做的。将以下选项添加到 aspx 不会解决问题。

ValidateRequest =“假”EnableEventValidation =“假” ViewStateEncryptionMode =“从不”EnableViewStateMac =“假”

另外，我的推荐网址是正确的网址，我不知道它如何使用两个（相同）参数进行重定向。我的推荐页面中没有这样的链接。请帮忙。

错误日志

URL : http://www.abcd.com/company-details.aspx?com=asia-pacific-pte-ltd&com=asia-pacific-pte-ltd

referral URL : http://www.abcd.com/companies/asia-pacific-pte-ltd/

Inner Exception Type: System.Web.UI.ViewStateException

Inner Exception: Invalid viewstate. Client IP: 192.162.19.193 Port: 1966 User-Agent: Opera/9.80 (Windows NT 6.1; WOW64; MRA 6.0 (build 6001)) Presto/2.12.388 Version/12.11 ViewState: 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...

Inner Source: 

Exception Type: System.Web.HttpException

Exception: The state information is invalid for this page and might be corrupted.

Stack Trace: at System.Web.UI.ViewStateException.ThrowError(Exception inner, String persistedState, String errorPageMessage, Boolean macValidationError) at System.Web.UI.HiddenFieldPageStatePersister.Load() at System.Web.UI.Page.LoadPageStateFromPersistenceMedium() at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at ASP.exhibition_details_aspx.ProcessRequest(HttpContext context) in c:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root\0f461847\442b0502\App_Web_bfjqxdef.20.cs:line 0 at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

UPDATE我通过从下面的链接压缩 ViewState 修复了错误http://www.codeproject.com/Articles/14733/ViewState-压缩 http://www.codeproject.com/Articles/14733/ViewState-Compression

并通过用此替换原始方法修复了 Base-64 字符数组错误的无效长度。

protected override object LoadPageStateFromPersistenceMedium()
    {
        string viewState = Request.Form["__VSTATE"];
        viewState = viewState.Replace(" ", "+");

        int mod4 = viewState.Length % 4;
        if (mod4 > 0)
        {
            viewState += new string('=', 4 - mod4);
        }
        byte[] bytes = Convert.FromBase64String(viewState);
        bytes = Compressor.Decompress(bytes);
        LosFormatter formatter = new LosFormatter();
        return formatter.Deserialize(Convert.ToBase64String(bytes));
    }

谢谢大家的帮助:)

我很抱歉这么说但是你的网站没有任何问题，并且您需要尽快重新启用您的 EventValidations。

你看到的是试图破解您的网站 https://stackoverflow.com/questions/3720720/how-serious-is-this-new-asp-net-security-vulnerability-and-how-can-i-workaround通过发送许多测试您的 ViewState 试图找到您的哈希键的数字 http://www.youtube.com/watch?v=yghiC_U2RaM.

The 您提供的 IP 有过去几天的大量活动列表 http://stopforumspam.com/ipcheck/192.162.19.193.

现在，可能导致此错误的另一种原因是 ViewState 的破坏。你可以压缩并分割它 https://stackoverflow.com/questions/8877252/limiting-view-state-information-on-ajax-calls/8964708#8964708如果你的 ViewState 太大。你也可以禁用所有不需要的控件 https://stackoverflow.com/questions/12086120/how-i-can-deactivate-viewstate-without-control-problems/12086277#12086277。您还可以添加一个登录以从内部查看基本页面上正在发生的情况 https://stackoverflow.com/a/2551810/159270.