RichTextBox (rch)

RichTextBox -

These provide more functionality than a regular textbox.
They offer a Find for searching for individual strings.
A LoadFile method for displays the contents of a file.

This class does not inherit from TextBox rather both the classes are inherited from System.Windows.Forms.TextBoxBase

Displays multiple lines of text by default

Auto Scroll to Bottom - this does not work

If you have a richtextbox on a windows forms and the form is resized the text in the richtextbox is not automatically adjusted and scrolled to the bottom

Me.rchRichTExtBox.LoadFile() 
Me.rchRichTextBox.Text = "" 
Me.rchRichTextBox.SelectionStart = Me.rchRichTextBox.Text.Length 
Me.rchRichTextBox.ScrollToCaret