CODEWITHSUNDEEP
performancetestingjmeter
user2995137
user2995137

Reputation: 21

Invalid postback or callback argument error in JMETER

I recorded a .net application using JMETER. After correlating and playing back it throws the below error. I have seen few posts which says eventvalidation has to be set false. Is there any other way to get rid of this error in Jmeter?

505|error|500|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.

Upvotes: 1

Views: 2106

Answers (3)

sijo
sijo

Reputation: 91

You need to disable event validation in the config

Upvotes: 1

wang
wang

Reputation: 1

If the dynamic DropDownList in your page, you can try to set blank to the value of DropDownList in JMeter post data. I think this problem can be solved.

Upvotes: 0

Dmitri T
Dmitri T

Reputation: 168082

I guess that you're either missing or passing incorrect ASP.NET Viewstate

Basically it's an input of "hidden" type which is required to store application state and some service data which you application is expecting.

My understanding is that you're either using kind of hard-coded or recorded viewstate value or totally missing it.

I recommend to append Regular Expression Extractor Post Processor (or any suitable kind of post-processors line Beanshell, BSF, XPath - if your application talks XHTML) to extract viewstate value from each request, store it in a variable and add it to every next request.

Upvotes: 1

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