Printing from textbox and from doc.

Question

Hello,
I'm having newby difficulties printing from a richtextbox to a printer.
I have built a small application (Like part of notepad) with file load and print.
I can load file or write to the textbox, but when printing (using the PrintDialog to select and set the printer) I always get an empty page from the default printer.
Can someone show me how to make this printing and print previw work? (See attched code).
Why do I always get my default printer, even when selecting another network printer?
Sam

 

 
using System;
using System.Windows.Forms;
using System.IO;
using System.Drawing.Printing;
 
 
namespace PrintTextBox
{
public partial class Form1 : Form
{
internal string MyFileName;
internal bool newfile;
internal bool open;
public Form1()
{
InitializeComponent();
this.Show();
}
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
}
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
this.richTextBox1.Clear();
newfile = true;
Text = "PrintTextBox";
}
private void opentoolStripMenu_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog dlgOpen = new OpenFileDialog();
dlgOpen.DefaultExt = "Text files |*.txt";
dlgOpen.Filter = "Text files |*.txt|RTF Files (*.rtf)|*.rtf|All files |*.*";
dlgOpen.Multiselect = true;
if (dlgOpen.ShowDialog() == DialogResult.OK)
{
this.MyFileName = Text = dlgOpen.FileName; //Display and remember the open file name for saving
StreamReader streamReader = new StreamReader(dlgOpen.FileName);
this.richTextBox1.Text = streamReader.ReadToEnd();
streamReader.Close();
open = true; newfile = false;
}
}
catch (ArgumentException) { }
catch (IOException) { }
catch (FormatException) { }
finally { }
}
private void PrintoolStripMenut_Click(object sender, EventArgs e)
{
PrintDialog dlgPrint = new PrintDialog();
if (dlgPrint.ShowDialog() == DialogResult.OK)
{
//Print a document or print the textbox

PrintDocument printdoc = new PrintDocument();
printdoc.DocumentName = "MyDocument.txt";
printdoc.Print();   //Prints an empty page!!!!
//
// or print the richTextBox ????
//
}
}
private void PreviewtoolStripMenu_Click(object sender, EventArgs e)
{
PrintPreviewDialog dlgPreview = new PrintPreviewDialog();
if (dlgPreview.ShowDialog() == DialogResult.OK)
{
//same problem as print.
}
}
private void ExittoolStripMenu_Click(object sender, EventArgs e)
{
Application.Exit();
}
}
}