VB.Net provides several mechanisms for gathering input in a program. A TextBox control is used to display, or accept as input,
a single line of text. VB.Net programmers make extensive use of
the TextBox control to let the user view or enter large amount of text. A text box object is used to display text on a form or to get
user input while a VB.Net program is running. In a text box, a user can type data or paste it into the control from the
clipboard.
For displaying a text in a TextBox control, you can code like this
continue reading: http://tutorialslodge.com/textbook-control/