It's still not clear what you are trying to do. Oh well. What's with the VB.Net code? Are you coding in VB.Net? If so, then you should ask your question in the VB.Net forum. That being said, I believe you are making the mistake of storing your data in a text box (or text boxes).

Rather than doing this, store your data in a List<> and then format each item in the list to display it in the text box(es).

If you still need help, then create a C# solution, zip it up and post it here. Or, if you prefer VB, create a VB solution and post it to the VB.Net forum.