Hi. I'm using DevEx v 8.1. In my project i have 2 textbox'es with one popup lookup (Like in your example). Depending on clicked textbox, i have differens datasource for grid inside this popup. But i have problem. If i clicked textbox1, popup always showing under this textbox. I could click on textbbox2, but popup will shows under textbox1 with source for textbox2. I tryied to clean in js popupElementID, but this is not helped:

cUniqueLookupPopup.popupElementID = "";
cUniqueLookupPopup.popupElementID = s.uniqueID;
cUniqueLookupPopup.popupVerticalAlign = "Below"
cUniqueLookupPopup.popupVerticalAlign = "LeftSides";
cUniqueGrid.gridCallBack();
cUniqueLookupPopup.Show();

This is in Switch Case

Hi,

We do not quite understand your problem. Could you please upload a sample project
and steps to reproduce the bugs to the Support Center?

 Hi. i found a bug. it's just needed to add one line cUniqueLookupPopup.popupElement = ControlName. And that's it. :)

But i have another problem. Different controls have different DataSources. When i'm clicking first time on Control1, everything's fine. But when i'm clicking on Control2, at first Lookup shows previos DataSource (for Control1) and after that it's reloading and showing DataSource for Control2. It's possible to Clean DataSource after Hiding Popup? Some solution in js or vb? 

Dmitrij S:

 Hi. i found a bug. it's just needed to add one line cUniqueLookupPopup.popupElement = ControlName. And that's it. :)

It's not a bug.
You cannot set internal fields on the client side.