https://supportcenter.devexpress.com/ticket/details/t476598/bootstrappopupcontrol-how-to-show-control-at-ribbonitem
BootstrapPopupControl - How to show control at RibbonItem | DevExpress Support
Jan 27, 2017 - Hello, I Want to show a BootstrapPopupControl when the user press an aspxRibbon button. With the AspxPopupControl I use this code, but is n
how toshow controldevexpresssupport