I need to get a multi-line textbox to behave.

I am working with a windows form in C#.

I have a textbox with multi-line set as true.  The textbox is sized to approximately 20 chars x 4 lines as the data will eventually be sent to a 20x4 LCD display.  I'm trying to get it to break the lines out so they are useable one line at a time.

I'm running in to a few problems.

1. If I enter each line and hit enter/return at the end of the line I have no problem.  It gives a \r\n at the end of the line and goes to the next.  No problems there. textbox.lines = string[4]
   
2. If I enter all the text it wraps and reports as only one line (textbox.lines = string[1])
3. If I enter a line, hit enter/return twice (moving to the 3rd line) I get some real garbage:

textbox.Text = "Some text here\r\r\n\n\r\nStatus = Lunch   \r\n                    \r\n                    "

textbox.lines = string[7] //I think it's 7...I don't have the code running right now

I'm open to suggestions.  Does anyone know a better way to implement a text input that I can limit to 20x4 chars and easily get the four lines?