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https://issues.apache.org/jira/browse/WICKET-2561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773171#action_12773171
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Igor Vaynberg commented on WICKET-2561:
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have you tried with wicket-1.4.x snapshot?
> findSubmittingButton returns wrong button in multipart form in IE
> ------------------------------------------------------------------
>
> Key: WICKET-2561
> URL: https://issues.apache.org/jira/browse/WICKET-2561
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 1.4.2, 1.4.3
> Reporter: Bart Duim
> Attachments: myproject.zip
>
>
> I wanted to create a page which uploads a file. For this, I created a form
> that has two buttons, a cancel and a ok button. The DefaultFormProcessing of
> the cancel button was set to false. This turned out to be a problem, in
> Internet Explorer the onSubmit (and onValidate) of the form was never called
> when ok was clicked.
> In multipart IE sends not only the clicked button in the request, but also
> all the other buttons. In findSubmittingButton() Wicket checks all the
> children of the page, to see if it is present as a parameter in the request.
> In the case of IE this wil allways return the first button that is in the
> request, and not the clicked button.
> Possible solution would be to make sure the request in IE contains only the
> clicked button, but my javascript skills are way to bad for that.
> An other solution would be to check for the right value of the request
> parameter, but i don't know if every browser will send the same value.
> request (via Fiddler) when clicked in IE:
> -----------------------------7d92a027a08b2
> Content-Disposition: form-data; name="simpleForm1_hf_0"
> -----------------------------7d92a027a08b2
> Content-Disposition: form-data; name="input1"
> input here
> -----------------------------7d92a027a08b2
> Content-Disposition: form-data; name="cancel_button"
> cancel_button
> -----------------------------7d92a027a08b2
> Content-Disposition: form-data; name="ok_button"
> ok_button
> -----------------------------7d92a027a08b2
> Content-Disposition: form-data; name="ok_button"
> 1
> -----------------------------7d92a027a08b2--
> request when ok is clicked in Firefox:
> -----------------------------21991321967783
> Content-Disposition: form-data; name="simpleForm1_hf_0"
> -----------------------------21991321967783
> Content-Disposition: form-data; name="input1"
> input here
> -----------------------------21991321967783
> Content-Disposition: form-data; name="ok_button"
> 1
> -----------------------------21991321967783--
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