You are designing an ASRNET Web application that allows users to specify a file to be
uploaded by entering the URL of the file. Only files that contain information in a specific
internal metadata field are allowed. You need to design a solution to reject URLs of
disallowed files. Which two approaches could you recommend? (Each correct answer
presents a complete solution. Choose two.)
A.
Use an on Submit Java Script handler.
B.
Use a Regular Expression Validator control.
C.
Use an On Click method.
D.
Use a custom validator control.
Explanation: