C# Debugging help

// Handles a Format Exception if user does not enter a number using System; using static System.Console; class DebugEleven01 { static void Main() { double salary; string salVal; bool isValidSalary; while(!isValidSalary) { try Write("Enter an employee's salary "); salVal = ReadLine(); salary = Convert.ToDouble(salVal); isValidSalary = true; catch(Formatexception fe) { WriteLine("You must enter a number for the salary"); } } WriteLine("The salary {0} is valid", salary.ToString("C2")); } }