private void UpdateService(Service service)
 {
     try
     {
         var textRange = new TextRange(txtNote.Document.ContentStart, txtNote.Document.ContentEnd);
         ServiceContactHelper client = new ServiceContactHelper();
         if (event_ == null)
         {
             client.EditService(service.ServiceID, user, -1, txtAddress.Text.Trim(), txtName.Text.Trim(), txtWebsite.Text.Trim(), textRange.Text.Trim());
         }
         else
         {
             client.EditService(service.ServiceID, user, event_.EventID, txtAddress.Text.Trim(), txtName.Text.Trim(), txtWebsite.Text.Trim(), textRange.Text.Trim());
         }
         client.Close();
         MessageBox.Show("Operation Success");
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }