stop printer feeding

Code:

---

namespace PrintTextFile
{
    public partial class Form1 : Form
    {
        StreamReader fileToPrint = new System.IO.StreamReader( @"C:\sample.txt");
        Font printFont = new System.Drawing.Font("Consolas", 10);

        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            printDocument1.Print();
            fileToPrint.Close();
        }

        private void printDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
        {
            float yPos = 0f;
            int count = 0;
            float leftMargin = e.MarginBounds.Left;
            float topMargin = e.MarginBounds.Top;
            string line = null;
            float linesPerPage = e.MarginBounds.Height / printFont.GetHeight(e.Graphics);
            while (count < linesPerPage)
            {
                line = fileToPrint.ReadLine();
                if (line == null)
                {
                    break;
                }
                yPos = topMargin + count * printFont.GetHeight(e.Graphics);
                e.Graphics.DrawString(line, printFont, Brushes.Black, leftMargin, yPos, new StringFormat());
                count++;
            }
            if (line != null)
            {
                e.HasMorePages = true;
            }
        }
    }
}

---

above code will print the contents of c:\sample.txt
but how could stop the printer in feeding?
for example if there are 3 or 4 lines in a text file. after 3rd lines printed it will stop from feeding...
any suggestions?