NET AJAX CONTROL TOOLKIT (PART 2) 188
Figure 8-11 shows a sample page containing two controls with the PopupControl
extender. The first control displays a Calendar control as a pop-up when the TextBox is
clicked. Clicking the second TextBox control displays a list of radio buttons.
Figure 8-11. An example of the PopupControl extender
The following segment is the code behind the second TextBox displayed in that sample
page shown in Figure 8-11. There is an empty TextBox control along with a Panel
control that contains a RadioButtonList control with a few options. There is also an
UpdatePanel defined for AJAX-style user interaction when the user makes a selection.