Questions tagged [invalid-postback]

5 questions
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3 answers

Invalid postback or callback argument. When clicking button

I have a web page with various controls. Two of them are dropdownlists. The first dropdownlist gets populated from an xml file on the page_load event. This works fine. To the first dropdownlist a cascadingdropdownlist extender is attached which…
b3n
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"Invalid Postback or callback argument" on modifying the DropDownList on the client side

I know why it's happening and i turned the validation off on the page level, but is there a way to turn it off on the control level? "Invalid Postback or callback argument . Event validation is enabled using in configuration or <%@ Page…
sarsnake
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I am getting this error when running my web page developed in asp.net

Invalid postback or callback argument. Event validation is enabled using in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to…
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Search Return Invalid Post Back when clicked ASP.NET VB

I have this following code as a Header in MasterPage.Master
naticap
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Button in GridView in UpdatePanel Throws "Invalid postback or callback argument" on Click

I'm trying to make a jQuery confirm dialog call a web method. The dialog is called when the delete button in a GridView in an UpdatePanel is clicked. However, when I click on the button, an error "Invalid postback or callback argument." I searched…
dork
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