Making a Text Box Form Focusable

I have a dialog box I designed appear when a user needs to enter a UPC. It has some rich text boxes, panels, and one text box. I use the following code to set the IBeam in the text box when the dialog box appears:

public TestScanDialog()
{
InitializeComponent();

// Start cursor in text box
testScanDialogTextBox.Focus();
}

Problem: The IBeam is not appearing in the text box.

More Info: I have checked it to see if it is selectable and focusable and both return False for some reason. Its tab is set to 0 and True and there are no other controls set to TabStop 0.

What gives?

[738 byte] By [JBrown9264] at [2007-12-16]