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Deregistering ResgisterStartupScript

Yesterday was bit tricky until I found my solution to deregister the Startup script; we used to bind from code behind in asp.net. I have added the script using sys.application.add_load(); to show a simple popup but the problem is when an asyn postback happens again and again those alerts pops out ;). After few mins of googling found a solution from Microsoft support link that we can remove the handler using sys.application.remove_load();

Though the solution is not exactly deregistering, it still solves the problem. If you have any other solution for this, please post the same in comments.

I have done with scriptmanager since the postback was through updatepanel.

Code:

 ScriptManager.RegisterStartupScript(updatePanelID, this.GetType(), "key", 
                "Sys.Application.remove_load(jsMethodName);", true);
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