error message that are displayed in the design mode of my aspx page

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My asp page dispay the following error "Error Creating Control - contentObject reference not set to an instance of an object." in the design mode even if i run it with any problem in the server.

Posted 14-Jun-12 0:19am

elidrissi.amine1

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Farhan Ghumra · Answer 1 · 2012-06-14T02:05:00

Solution 1

Object Reference not set to an instance of an object
This error happens when you try to use a property of an object that is null.

Posted 14-Jun-12 2:05am

Farhan Ghumra

shivprasadshetty · Answer 2 · 2012-06-14T02:11:00

Solution 2

This should help.
http://blogs.msdn.com/b/webdevtools/archive/2010/04/15/rendering-issue-in-visual-studio-2010-when-accessing-the-session-state-in-the-oninit-method.aspx[^]

Posted 14-Jun-12 2:11am

shivprasadshetty

Sandeep Mewara · Answer 3 · 2012-06-14T02:22:00

Solution 3

It sounds like your ASPX page design is having some 'Control - contentObject' that is not properly being used. Make sure the control tag is correctly formed and the properties needed are defined. Somehow it's not initialized.

Posted 14-Jun-12 2:22am

Sandeep Mewara