当我从客户端返回一个页面时,我得到以下错误。我有JavaScript代码,修改asp:ListBox在客户端。

我们如何解决这个问题?

错误详情如下:

Server Error in '/XXX' Application.

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Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
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.ArgumentException: Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.

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:

[ArgumentException: Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.]
   System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +2132728
   System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +108
   System.Web.UI.WebControls.ListBox.LoadPostData(String postDataKey, NameValueCollection postCollection) +274
   System.Web.UI.WebControls.ListBox.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) +11
   System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +353
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1194

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Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

当前回答

检查绑定控件的数据。一些无效数据破坏了ValidateEvent。

其他回答

在远程服务器(生产、测试、qa、登台等)上遇到这个问题后,而不是在本地开发工作站上,我发现应用程序池配置的RequestLimit不是0。

这导致应用程序池放弃并回复问题中指出的异常。

我通过没有将ListBox添加到父Page/Control控件集合来解决这个确切的错误。因为我真的不需要任何服务器端功能。我只是想用它来输出自定义服务器控件的HTML,这是我在OnRender事件处理程序中自己做的。我希望使用该控件可以使我不必编写自己的html响应。

这个解决方案可能不适合大多数人,但它使ASP。NET对控件执行ValidateEvent,因为控件在回发之间不会保留在内存中。

此外,我的错误是由选定的列表项是一个项目,不是在前回发的列表框。希望能帮到谁。

你需要做2或3个,不要禁用事件验证。

在asp:listbox客户端添加项目有两个主要问题。

The first is that it interferes with event validation. What came back to the server is not what it sent down. The second is that even if you disable event validation, when your page gets posted back the items in the listbox will be rebuilt from the viewstate, so any changes you made on the client are lost. The reason for this is that a asp.net does not expect the contents of a listbox to be modified on the client, it only expects a selection to be made, so it discards any changes you might have made.

最好的选择是像推荐的那样使用更新面板。另一个选择,如果你真的需要这样做的客户端,是使用普通的<select>而不是<asp:ListBox>,并保持你的项目列表在一个隐藏字段。当页面在客户端上呈现时,您可以从文本字段内容的分割中填充它。

然后,当您准备发布它时,您从修改后的<select>中重新填充隐藏字段的内容。然后,当然,您必须在服务器上再次分割它,并对您的项目做一些事情,因为您的选择现在是空的,因为它回到了服务器上。

总而言之,这是一个非常麻烦的解决方案,我并不推荐,但如果您确实需要对listBox进行客户端修改,它确实可以工作。但是,我真的建议您在走这条路之前查看一下updatePanel。

以上这些方法对我都没用。经过更多的挖掘,我意识到我忽略了2个表单应用在页面上,这是导致问题的原因。

<body>
<form id="form1" runat="server">
<div>
        <form action="#" method="post" class="form" role="form">
        <div>
        ...
        <asp:Button ID="submitButton" runat="server"
        </div>
</div>
</body>

注意,最近ASP。NET已经开始考虑iframes在一个表单标签中包含一个表单标签在iframe文档本身是一个嵌套框架。为了避免这个错误,我不得不将iframe移出form标签。

我用的是数据列表,我的按钮也出现了同样的错误。我只是使用IsPostBack检查和填充我的控件,问题就解决了!太棒了! !