[update] After some investigation, i have found some issues with the way i have calculated the dates. firstly, the day is off by a day (leap year?) and the time is now off by a little more. its now off by over 50min. If i find more info, i will post it.

I have been building a new web site for a while now (www.tiernanotoolephotography.com which is semi live) and i have been thinking of different things to add to the about page. Well, here is one of them: The version info about the assemblys, and when they where built. so here is how it works:


using System.Reflection;

//You need to include the reflection section to get this to work

[assembly: AssemblyVersion(“01.00.*”)] //this will give you 1.0.2420.32394 for today. you can have a 1.00.01.* if you

//prefer, but it wont work for the following solution.


public partial class About : System.Web.UI.Page
protected void Page_Load(object sender, EventArgs e)
double build = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.Build; //gets the build number

//(this is the .2420 section above

double minorRev = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.MinorRevision; //gets minor

//this is the .32394 above.

DateTime CompiledDate = new DateTime(2000,1,1); //new time starting from jan 1 2000
CompiledDate = CompiledDate.AddDays(build); // add the build as days
CompiledDate = CompiledDate.AddSeconds(minorRev * 2); //add the time in seconds, multiplied by 2 (dont ask)

Response.Write(“Version: ” + System.Reflection.Assembly.GetExecutingAssembly().GetName().Version);

//retuns the version number

Response.Write(“Compile Date and Time: ” + CompiledDate.ToString()); //displays compiled date


so, the version info is based on time. interesting theory. the build is based on the number of days since jan 1 2000, and the revision is based on the number of seconds since mindnight, which all is cool. So, hopefully this helps you as much as it helps me! (well, i havent figured out how it can help me, just yet, but lets not go into that…) Also, there is one issue i have noticed. what ever way the seconds is calculated, it is off by an hour. so, for the above time it is showing a little before 6PM, but its really a little before 7PM. Whats an hour between friends though? :)

This code is here with no garentee, just showing you how this works, bla bla bla… :)

bk_keywords: programming, c#