c# custom exceptions is unhandled

Question

Class assignment is to create your own custom exception (MyEmptyStringException) in this case.

Here is what I have:

class Program
    {
        public class MyEmptyStringException : Exception
        {
          public MyEmptyStringException(string message) : base(message) { }
        }

        public class MyOutOfRangeException : Exception
        {
            public MyOutOfRangeException(string message) : base(message) { }
        }

        static void Main(string[] args)
        {
            string testStr;
            byte testByte;
            bool validValue = false;

            Student myStudent = new Student();

            do
            {//start do loop

                Console.WriteLine("Enter student's first name");

                try
                {
                    testStr = (Console.ReadLine());

                    if ((string.IsNullOrEmpty(testStr)))
                    {
                        throw new MyEmptyStringException("Answer was blank");
                        // Console.WriteLine("String is empty");
                    }
                    else
                    {
                        validValue = true;
                    } //end if
                }
                catch (FormatException e)
                {
                    Console.WriteLine("\n" + e.Message + "Format Exception!\n");
                }
                catch (OverflowException e)
                {
                    Console.WriteLine("\n" + e.Message + "Overflow Exception\n");
                }

             } while (!validValue);
            myStudent.firstName = Console.ReadLine();

For me it errors out here:

throw new MyEmptyStringException("Answer was blank");

with the error message: MyEmptyStringException was unhandled. Any help would be appreciated.

Answer 1

Catch your custom exceptions:

MyEmptyStringException and MyOutOfRangeException

Eg:

try
 {

 }
 catch (MyEmptyStringException mese)
 {
    Console.WriteLine(mese.Message);
 }
 catch (MyOutOfRangeException moofre)
 {
    Console.WriteLine(moofre.Message);
 }