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Asked: 2026-05-31T02:30:32+00:00

I have an asp.net control, which seems to fire the button click event handler

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I have an asp.net control, which seems to fire the button click event handler on a page refresh. Why does this happen and how could I avoid it?

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  1. Editorial Team

    The reason for this is your refreshing the last information sent to the server. Which is the button click information in the __doPostback. This is why you are seeing the event of the button fire again.

    Here is an article talking about how to detect a refresh over a postback.

    For your quick reference, this information is copy pasted from Why in ASP.NET is a button click event executes when page is refreshed?

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