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# Thursday, 16 August 2007

Well I thought I would be nice and put up the code sample for implementing FizzBuzz using and extension method in VB.NET.  To read my full explanation of FizzBuzz and extension methods please read my previous post.

Those of you that know me, know that I could care less if you program in VB or C#, but I definitely prefer C# because it allows me to type a lot less.  Extension methods appear to be no different are a bit more complicated in VB, requiring that they are in a module and decorated with an attribute.

Module ExtensionMethods

    Sub Main()

        For i As Integer = 1 To 100


    End Sub

    <System.Runtime.CompilerServices.ExtensionAttribute()> _
Public Function FizzBuzz(ByVal Value As Integer) As String
        Dim rtnVal As String = ""

        If Value Mod 3 = 0 Then
            rtnVal += "Fizz"
        End If

        If Value Mod 5 = 0 Then
            rtnVal += "Buzz"
        End If

        If rtnVal = "" Then
            rtnVal = Value.ToString
        End If

        Return rtnVal
    End Function

End Module

Thursday, 16 August 2007 06:00:00 (Central Daylight Time, UTC-05:00)  #    Comments [0] - Trackback - Save to - Digg This! - Follow me on Twitter
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# Tuesday, 14 August 2007

For those of you that don’t know what FizzBuzz is, it became quite popular awhile back when Jeff Atwood posted to his blog a few quotes from people about interviewing candidates for programming jobs and the fact that many of them can’t code. (It’s possible that the topic originated from someone else.  I heard it originally from Scott Hanselman’s blog who referenced Jeff.)  FizzBuzz is a simple coding exercise where you write a loop that prints the numbers from 1 to 100, except if the number is divisible by three it outputs Fizz and if the number is divisible by five it outputs Buzz.  If it is divisible by both you output FizzBuzz.

What is an Extension Method?  An extension method is a new feature in .Net 3.5 that allows you to add methods to an existing object.  It allows you to modify an object without needing to create your own version of it through inheritance.  Why is this useful?  I’m sure there are many reasons.  One is that if you don’t have the ability to change the object that is being passed to your class then you can’t just use inheritance and create your own version of the object, but what you can do is create an extension method.

This example that I am going to walk you through will add a method to int called FizzBuzz.  Calling this method will output a string with either the number of your int, Fizz, Buzz, or FizzBuzz depending on the criteria stated above.

This code for the extension method is fairly simple:


namespace ExtensionMethodExample


    public static class CustomExtensionMethods


        public static string FizzBuzz(this int value)


            string rtnVal = "";


            if (value % 3 == 0)


                rtnVal += "Fizz";



            if (value % 5 == 0)


                rtnVal += "Buzz";



            if (rtnVal == "")


                rtnVal = value.ToString();



            return rtnVal;







Here I have a static class called CustomExtensionMethods. Next, I have created a static method called FizzBuzz.  The magic happens when I all this to the input parameter. I then calculate FizzBuzz on my input parameter and return the appropriate string.  (I’m sure there is a better way to implement FizzBuzz.)

That’s it.  I then utilitize the new FizzBuzz method like this(In my case I have created a simple console application):

using System;

using System.Collections.Generic;

using System.Text;

using ExtensionMethodExample;


namespace ExtenderMethodExample


    class Program


        static void Main(string[] args)


            for (int i = 1; i < 100; i++)









It’s that simple.  Drop this into a VS2008 console application and try it out.  You will have complete access to your extension methods via intellisense.  Happy coding.


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Tuesday, 14 August 2007 05:00:00 (Central Daylight Time, UTC-05:00)  #    Comments [0] - Trackback - Save to - Digg This! - Follow me on Twitter
Original Posts
# Friday, 10 August 2007

Well Greg Brill hasn’t responded to the email with my resume and I haven’t gotten any swag from DotNetRocks!, but you may have noticed that on episode #260 at five minutes and twenty seconds Richard Campbell read my email.  I was a little surprised myself as I was only half listening while I was at work, but sure enough he read my comments on show #244 with Scott Stanfield.  He didn’t read everything so here is my email in full:


Hey Guys,

I just wanted to let you know that the Scott Stanfield show was great.  I am a .Net developer and have been listening to the big three for some time now (.NetRocks, Hanselminutes, and Runas Radio).  My only complaint is that I need more content to listen to.  I’ve tried a few other podcasts, but either the content or the sound quality sucked and I removed them from my subscriptions.  After listening to the Scott Stanfield show I started thinking that you need to get this guy his own podcast.  He knew a wide range of topics and obviously enjoyed talking about them.   The way he presented information reminded me of Scott Hanselman as they both come across as very excited and enthusiastic about technology.  What do you think?  If you’re too busy to get it up and going then maybe you could hire a hot intern (or at least you could use it as an excuse to get one.)  Just thought I would throw that out there.  Keep up the good work.


Anyways, I’m going to officially start the campaign for the Scott Stanfield show.  I don’t know If Scott wants to do one or not, but if I can get enough people to ask then maybe he will.  My job is getting fairly boring and I need some interesting content to listen to so until I get a new job, some swag as a bribe to shut me up, or the Scott Stanfield show starts I’ll keep bugging for the new podcast.  I’ve put together a survey to gather everyone’s opinion about the idea so fill out the survey and feel free to comment about it here.


Friday, 10 August 2007 06:00:00 (Central Daylight Time, UTC-05:00)  #    Comments [2] - Trackback - Save to - Digg This! - Follow me on Twitter
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