private void companyaddbtn_Click(object sender, RoutedEventArgs e)
 {
     if (f.CheckForInternetConnection())
     {
         var companyedit = new companyedit();
         companyedit.Show();
         this.Close();
     }
     else
     {
         MessageBox.Show("אין חיבור לאינטרנט");
     }
 }
 private void companyedit_Click(object sender, RoutedEventArgs e)
 {
     //string selected = this.companyEditComboBox.SelectedItem.ToString();
     if (f.CheckForInternetConnection())
     {
         string  selected    = ((ComboBoxItem)companyEditComboBox.SelectedItem).Tag.ToString();
         company selectedone = f.set_Company(int.Parse(selected));
         var     companyedit = new companyedit(selectedone);
         companyedit.Show();
         this.Close();
     }
     else
     {
         MessageBox.Show("אין חיבור לאינטרנט");
     }
 }