Put your dropdownlist loading into the OnInit function instead - then it should be loaded properly when RegisterUser_CreatedUser is called.
I had a similar issue that change of radio button selection would auto postback the page and the dropdown list items would disappear after the page is back.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.