How to stop ModalPopupExtender flickering
If you use the AJAX Control Toolkit's ModalPopupExtender you may have run into flicker issues. Thank you Matt Berseth!
https://mattberseth.com/blog/2007/08/how_to_stop_the_modalpopup_fli.html
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If you use the AJAX Control Toolkit's ModalPopupExtender you may have run into flicker issues. Thank you Matt Berseth!
https://mattberseth.com/blog/2007/08/how_to_stop_the_modalpopup_fli.html