You work as a Software Developer for ABC Inc.

You work as a Software Developer for ABC Inc. You create a Web page named MyWebPage that displays detailed information of a registered user. The page contains a TextBox Web server control that requires the RangeValidator validation control to validate whether the user has entered the correct date of birth. A validation error message is displayed if the user has entered the value, which is greater than the date of registration. However, you want to ensure that the validation control on the Web page does not occupy any space, but share the same location for the display of error messages on the Web page. You also want to ensure that the layout of the Web page is changed when the error message is displayed. Which of the following actions will you take to accomplish the task?