How do I create a subclass with a constructor that defaults the helplink to google.com?

Question

I'm trying to write code to create an EpicFailException class as a subclass of ApplicationException. I have to add a constructor that defaults the HelpLink property to google.com. Below is what I have so far. Any suggestions for how to apply the subclass?

 public class ApplicationException : Exception
 {
     public ApplicationException(string auxMessage, Exception inner) :
         base()
     {
         this.HelpLink = "http://google.com";
     }
 }

is this a asp.net app or? Do you want to redirect the user to google if this exception happens... and why don't you handle it yourself... what epic exception are you expecting??? — Ivan Crojach Karačić, May 01 '11 at 21:55
I want to redirect the user to google if this exception happens. EpicException is the subclass of ApplicationException. — John, May 01 '11 at 21:58

score 1 · Answer 1 · edited May 23 '17 at 12:12

1

The .NET class design guidelines have been changed; the current recommendation is to derive from Exception and not from ApplicationException.

That said, if you have the need to set the HelpLink property in a number of derived exceptions, you might want to create a base class which demands the value for the HelpLink property as a parameter, and then derive from that:

public abstract MyExceptionBase : Exception
{
    protected MyExceptionBase(string message, string helpLink) : 
        base(message)
    {
        HelpLink = helpLink;
    }
}

public MyException : MyExceptionBase
{
    public MyException(string message) : 
        base(message, "http://www.google.com")
    { }
}

Note that you should still follow all of the other guidelines for custom exceptions, such as serialization, parameterless constructor, etc.

edited May 23 '17 at 12:12

Community

1
1

answered May 01 '11 at 21:58

casperOne

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I want to write the code to create an EpicFailException class as a subclass of ApplicationException. Then i'm trying to add a constructor that defaults the HelpLink property to "http://google.com". – John May 01 '11 at 22:05
@John: The above does what you want, and follows proper .NET design guidelines. See the links in the answer for more information. – casperOne May 01 '11 at 22:06

score 0 · Answer 2 · answered May 01 '11 at 21:56

0

I'm not sure if I get the question, but you might be looking for

base(auxMessage,inner)

instead of just

base()

answered May 01 '11 at 21:56

Achim

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How do I create a subclass with a constructor that defaults the helplink to google.com?

2 Answers2