Thanks. As a matter of fact, I do know C# and can develop with it. Before .NET I have about 10 years experience teaching and developing in C++. However, for various reasons, I simply prefer VB.NET - just as some prefer Mac's or Windows environments. I have never used a video tutorial, so I appreciate your warning. Mark Mark Kettlewell

Thank you very much! Mark Mark Kettlewell

I am an experienced VB.NET programmer who has a 13 year old son who wants to learn to program during the summer. Having been homeschooled for several years he is good at independent learning. Does anyone have any good recommendations for books, web-based classes, video tutorials, etc. that do a good job of teaching beginning programming using VB.NET? He could study it during the day, and then I could tutor him after I get home from work. FYI, he is an A student and learns quickly. Mark Kettlewell

I am aware of System.IO.Path.InvalidPathChars. However, I don't know how to filter out these characters when input into a text control. I tried using the TextBox1.KeyDown event, but I don't know how to keep the invalid char from showing up in the textbox, even if I can identify it. Mark Kettlewell