Hi,
I was checking the sample website application (comes on installing telerik ajax tools), i got an error on first look - Input. First click the order now button then click reset after that again click order now. The error i got is:
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: 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.
Please let me know the problem.Thank You
I was checking the sample website application (comes on installing telerik ajax tools), i got an error on first look - Input. First click the order now button then click reset after that again click order now. The error i got is:
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: 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.
Please let me know the problem.Thank You
2 Answers, 1 is accepted
0
Hello,
Could you please try to replicate the described issue with our online exam:
http://demos.telerik.com/aspnet-ajax/input/examples/common/orderform/defaultcs.aspx
Basically the problem you are facing is caused of abnormal change of the ViewState during postbacks. Event validation checks the incoming values in a POST to ensure the values are recognized. In other words, saved hash values in the __EVENTVALIDATION are different from these send through POST method.
One of the possible, solution is to disable event validation.
Best wishes,
Maria Ilieva
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.
Could you please try to replicate the described issue with our online exam:
http://demos.telerik.com/aspnet-ajax/input/examples/common/orderform/defaultcs.aspx
Basically the problem you are facing is caused of abnormal change of the ViewState during postbacks. Event validation checks the incoming values in a POST to ensure the values are recognized. In other words, saved hash values in the __EVENTVALIDATION are different from these send through POST method.
One of the possible, solution is to disable event validation.
Change this line: <@Page ... enableEventValidation="true" /> To: <@Page ... validateRequest="false" enableEventValidation="false" /> Best wishes,
Maria Ilieva
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.
0
hari
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answered on 10 Jun 2010, 06:04 AM
Hello, Thanks for the reply. Its working fine in your online demo.I cant reproduce the error. The suggested solutions works but is that the correct way to do that?