Why is my CalendarExtender getting overlapped when rendered?

Question

I\'m working on a .NET web application and I\'m using a CalendarExtender control within it to have the user specify a date. For some reason, when I click the icon to display the

Answer 1

If those answers does not work properly it might be a problem with hiding overflow. This can be solved using following css:

.ajax__scroll_none {
    overflow: visible !important;
    z-index: 10000 !important;
}