private void editAddressItem()
        {
            tabControl.SelectTab("tabPageAddresses");

            ListView.SelectedIndexCollection selectedItems = this.listViewAddresses.SelectedIndices;
            if (selectedItems != null && selectedItems.Count > 0)
            {
                AddressObject currentAddrObj = SettingsObject.ListAddress[selectedItems[0]];
                AddressWindow window = new AddressWindow(currentAddrObj);
                DialogResult result = window.ShowDialog();
                if (result == DialogResult.OK)
                {
                    AddressObject newAddrObj = window.getAddressObject();
                    if (newAddrObj != null)
                    {
                        // Remove old object from collection
                        SettingsObject.ListAddress.Remove(currentAddrObj);

                        // Add new object to collection
                        SettingsObject.ListAddress.Add(newAddrObj);

                        // Remove old listview entry
                        this.listViewAddresses.Items.RemoveAt(selectedItems[0]);

                        // Add new listview entry
                        ListViewItem item = new ListViewItem(new string[] { "", newAddrObj.AddressName, newAddrObj.AddressEMail });
                        item.Checked = newAddrObj.Active;
                        this.listViewAddresses.Items.Add(item);
                        this.listViewAddresses.Sort();
                    }
                }
            }
        }
        private void addAddressItem()
        {
            tabControl.SelectTab("tabPageAddresses");
            AddressWindow window = new AddressWindow();
            DialogResult result = window.ShowDialog();
            if (result == DialogResult.OK)
            {
                AddressObject addrObj = window.getAddressObject();
                if (addrObj != null)
                {
                    // Add to local collection
                    SettingsObject.ListAddress.Add(addrObj);

                    // Add to listview
                    ListViewItem item = new ListViewItem(new string[] { "", addrObj.AddressName, addrObj.AddressEMail });
                    item.Checked = true;
                    this.listViewAddresses.Items.Add(item);
                    this.listViewAddresses.Sort();
                }
            }
        }