A custom exception with HelpLink and Source : Custom Exception « Language Basics « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Language Basics
3. Custom Exception

using System;

public class CustomException : ApplicationException
{
  public CustomException(string Message) : base(Message)
  {
    this.HelpLink = "See the Readme.txt file";
    this.Source = "My Program";
  }
}

class MainClass
{
  public static void Main()
  {
    try
    {
      Console.WriteLine("Throwing a new CustomException object");
      throw new CustomException("My CustomException message");
    }
    catch (CustomException e)
    {
      Console.WriteLine("HelpLink = " + e.HelpLink);
      Console.WriteLine("Message = " + e.Message);
      Console.WriteLine("Source = " + e.Source);
      Console.WriteLine("StackTrace = " + e.StackTrace);
      Console.WriteLine("TargetSite = " + e.TargetSite);
    }
  }
}

Throwing a new CustomException object
HelpLink = See the Readme.txt file
Message = My CustomException message
Source = My Program
StackTrace =    at MainClass.Main()
TargetSite = Void Main()