first , thanks for the great tutorial.
but i have a question about validation on dropdownlist
tutorial Part 6: Using Data Annotations for Model Validation
the last part shows how to do validation on textbox , but how can i validate the dropdownlist at the same time when i click
because now it only shows 2 error message on textbox, the dropdownlist shows no error message.
how to improve this to make the application better?
thanks very much