passing formatted text from one textbox to another

Experts:

I'm passing the text from one textbox, to a textbox on a usercontrol I've created. if the original text is formatted in anyway, once I pass it to the user control I lose the formatting and receive only the text. What's the best way for me to pass the formatted text from one control to another?

here's a snippet of my  code:

textbox txtnotes = (textbox)myctrl.FindControl("txtRecievingNotes")

txtnotes.Text = txtPassingNotes.Text

Thanks in advance for the help,