Validation on the edits and the insert functions
Trying to get the validation to work, but somehow the linkbuttons does not trigger the validation
trying to get it to work. Somehow the validators doesn't want to trigger it seems
Obviously RegularExpressionValidator didn't wantto vlaidate the controls as I expected it to do. So I changed them to RequiredFieldValidators instead which makes it work as intended
Changed the errormessages on the validators