How to make Update Function?

[Ruby]

So I am making a Skype tool in C# just for fun basically. But I don't want to have to personally re-distribute the files every time I update it. How would I get it to where I can upload the files to DropBox and the program could detect off the dropbox if it needs to be updated or not? I got this idea from this video except it is in VB, not C#.

Spoiler: Video

 

[Auschwitz Guard]

You would need to purchase server hosting, to store the bytes of the newest exe out, along with a version number that can be compared within the file header. This would be auto-updating, the user will have to reboot their machine afterwards (to make sure the new bytes were successfully written into the file buffer), a more "ghetto" version would be to just upload your file, and create a text document online with your current version, with writing access to change it each new update (with both the uploaded file and text), detecting the new update and opening the link in your browser. I advise the more advanced, efficient method but whatever works for you.

 

[Z61]

If it's in VB it's quite easy to convert to C#.