StreamReader sr=new StreamReader("C:\\Test.txt")
int count=File.ReadAllLines("C:\\Test.txt").Length;
for(int i=0;i<count;i++)>
{
MessageBox.Show(sr.ReadLine());
}
Then Add your project PrintDialog and PrintDocument, and if you want to see a preview PrintPreview.And a little search for these on www.google.com please.