[MonoDevelop] Odd problem with a textbox

[Kenneth D. Weinert]

I'm working through an exercise in a book and one of the things he does 
is to create a dialog with a label, a textbox, and a couple of buttons.

It all *looks* ok, and it compiles and runs, but when the dialog comes 
up the text box isn't actually visible.  I presume this can't be a 
platform error, but most likely something stupid I'm doing due to my 
noob stature as regards c# programming.

TextBoxd rssUrl = new TextBox();
rssUrl.Size = new System.Drawing.Size(362, 96);
rssUrl.Location = new System.Drawing.Point(112, 16);

Controls.Add(rssUrl);

Any pointers as to where to find where I've gone wrong on this one will 
be greatly appreciated.

-- 
Ken Weinert
Quarterflash Design Group