Interesting little program you have here. I do have a suggestion for you, make the Page BackColor and the Text area BackColor the same.
Also, if you have your app target the Full 4.0 Framework you can reference System.Web.dll in the project's references. Then you can replace this code:
vb Code:
Dim Buff As String = Source
Buff = Replace(Buff, "&", "&")
Buff = Replace(Buff, "<", "<")
Buff = Replace(Buff, ">", ">")
Buff = Replace(Buff, ControlChars.Quote, """)
'Append buff to string builder.
sb.Append(Buff)
With this:
vb Code:
'Dim Buff As String = Source
'Buff = Replace(Buff, "&", "&")
'Buff = Replace(Buff, "<", "<")
'Buff = Replace(Buff, ">", ">")
'Buff = Replace(Buff, ControlChars.Quote, """)
'Append buff to string builder.
'sb.Append(Buff)
sb.Append(System.Web.HttpUtility.HtmlEncode(Source))