jmpena jmpena -5 years ago 778
Javascript Question

__doPostBack is not defined

Im getting that error when try to call a __doPostBack on one of my pages, every page that i have in the project use __doPostBack function but in this particular page im getting that Javascript error.

i was looking in the internet and the only thing i read is that this error happends when i have a unclose tag but i review the site and its ok.

Error: __doPostBack is not defined
Source File: htt://localhost:99/ProjectName/Disable.aspx
Line: 1

Answer Source

__doPostBack() should be automatically included by any ASP.NET WebControl that could cause a post back. You sound like you are calling it manually in some Javascript you wrote. If so, you will need to include a WebControl, to make sure that function in inserted onto the page.

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