private void menuItem11_Click(object sender, EventArgs e)
 {
     frmtimkiem ftk = new frmtimkiem();
     ftk.ShowDialog();
 }
 private void linkLabel7_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
 {
     frmtimkiem ftk = new frmtimkiem();
     ftk.ShowDialog();
 }