I try to achieve this before cause I want to remove the overhead re-loading the same control many time, when the user click on the same link more than once, when a strange and unexpected result occur; FindControl couldn't fine the control with the ID.
In the debug mode you can see that if you test the same function after adding the control it will work fine, but not in the next trip (same call to load the user control).
This what happen when I try to use your code here.
/Edit : same date
I only want to have one usercontrol loaded in the panel.
Thanks and Best regards,