Create a custom exception and throw.
You will need to create your own CustomException that contains a message and a property of type DateTime, representing the time the exception was thrown (throw new...).
In your main program, create a function ThrowError() that simply throws a CustomException with the appropriate information.
Call this function from the Main method, ensuring it is properly wrapped in a try/catch block, and display the date and message of the exception in the console.
