private void txtrack_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == (char)Keys.Tab)
     {
         Btnsave.Focus();
     }
 }
 private void txtremark_KeyPress(object sender, KeyPressEventArgs e)
 {
     if (e.KeyChar == 13 || e.KeyChar == 11)
     {
         Btnsave.Focus();
         pictureBox5.Image = Properties.Resources.if_001_06_9653;
     }
     else if (e.KeyChar == 8)
     {
         pictureBox5.Image = null;
     }
 }