This tutorial will teach you about the ByVal and ByRef . If you want to create a proper function, you need to learn how to use ByVal and ByRef. They will allow you to create your own function with advanced features. Learning ByVal and ByRef is really hard, so I tried to explain it as easily as I could. For more information, check out the website: howtostartprogramming.com - VisualBasic .Net Video Tutorials, VB.Net Video Tutorials, ASP.Net Video Tutorials, C#.Net Video Tutorials, VisualStudio.Net Video Tutorials, .Net Tutorials, VB.Net Interview Questions, VB.Net Free Books