Article ID: 867472
Article Last Modified on 1/12/2007
APPLIES TO
- Microsoft ASP.NET 1.1
- Microsoft ASP.NET 1.0
SYMPTOMS
When you try to open a Web page in your Microsoft ASP.NET application, you receive the following error:
CAUSE
This problem may occur when you enable cross-site scripting detection on Check Point Firewall on your private network. The cross-site scripting check may corrupt the view state of the ASP.NET application page.
WORKAROUND
To work around this problem, you can disable the cross-site scripting detection or you can store the view state on the server. To disable cross-site scripting detection on your Check Point Firewall-1, see your Check Point Firewall-1 documentation. For more information, visit the following Check Point Web site:
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To store the view state on the server, use the following code sample:
C#:
protected override object LoadPageStateFromPersistenceMedium() {
return Session["_ViewState"];
}
protected override void SavePageStateToPersistenceMedium(object viewState)
{
Session["_ViewState"] = viewState;
}
VB.NET
Protected Overrides Function LoadPageStateFromPersistenceMedium() As Object
Return Session("_ViewState")
End Function
Protected Overrides Sub SavePageStateToPersistenceMedium(ByVal viewState As Object)
Session("_ViewState") = viewState
End Sub
REFERENCES
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
829743 Troubleshooting the "View state is invalid" error with ASP.NET
The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
Keywords: kbprb KB867472
