     private void button3_Click(object sender, EventArgs e)
        {
            if (fileName != "")
            {
                printDocument1.DocumentName = fileName;
                printPreviewDialog1.Document = printDocument1;
                DialogResult result = printDialog1.ShowDialog();
                // If the result is OK then print the document.
                if (result == DialogResult.OK)
                {
                    printDocument1.Print();
                }
          
            }
            else
                MessageBox.Show("Please Select file with open Button"); printDocument1.DocumentName = fileName;
            
        }
