Hi Kenny,

     Forgive me, I think I will need more time to investigate this scenario. I will surely let you know when I have news regarding this. Thank you and have a nice day.

Best Regards,

Andi Santoso

Hi Kenny,

    Forgive me for a delay responsive. Here is the fixed Framework that you will need to apply. Please ensure to copy those file into your GAC. Also, I attached you a modified sample that you have provided. In there, it will show you on how to use a right method for render control.

    For your information, .RenderControl is usually used to render the ASP.Net controls. For our control, we can use .RefreshModifiedControls. I hope it helps. Thank you and have a nice day.

Best Regards,

Andi Santoso