private void buttonItem4_Click(object sender, EventArgs e)
 {
     if (smsForm == null)
     {
         smsForm = new SMSForm();
     }
     smsForm.SetNumber(this.txtSMS.Text);
     smsForm.ShowDialog();
 }
 private void btnOSMS_Click(object sender, EventArgs e)
 {
     if (smsForm == null)
     {
         smsForm = new SMSForm();
     }
     smsForm.SetNumber(this.txtOtherPhone.Text);
     smsForm.ShowDialog();
 }