Asp.net tabcontainer rendering issue

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C#

ASP.NET

Hello,

Thank's in advance for the help.

I am having some issue with asp.net tab container rendering issue. Currently I am working on asp.net c# project and one of the page contains tab container with some panels and it has tied with so many pre-validation if any validation goes fails then alert will be prompted to the user with appropriate error message. while showing the alert box it is not rendering the tab container panel. once alert box is closed it showing the tab container.

so how can i go ahead to fix this problem?