Please use the RowEditing-Event, as your DropDownList should only be shown when clicking Edit. But first, you have to bind the GridView newly as the GridView now needs to render different controls for the edit row.
The FindControl always return null because when your in the RowDataBound event you can get the label only.
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.