printPreviewDialog doesn't show the document to print

[Elvisvr]

Does any body has an idea why the control doesn't show the string to be
printed in the dialog???
//The event raised by: printPreviewDialog1.ShowDialog();
private void thedoc_PrintPage(object sender,
System.Drawing.Printing.PrintPageEventArgs e)
{
System.Drawing.Font printFont =
new System.Drawing.Font("Arial", 35,
System.Drawing.FontStyle.Regular);
e.Graphics.DrawString("Test...", printFont ,System.Drawing.Brushes.Black,0,0);
}

Thanks in advance.

Elvisvr.