c# - cannot delete last remaining item

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C#

I am working on a project (simple phone book) for personal use. Basically, the contacts are displayed in a listview and stored in a XML file. I am having trouble deleting the last remaining item in my listview (listView1).

This is how my XML looks like:

<People>
  <Person>
    <Name>John</Name>
    <Hometown>Washington</Hometown>
    <Address>231 Main Street</Address>
    <Birthday>130299511993682082</Birthday>
    <Phone>555-555-555</Phone>
    <Email>john@gmail.com</Email>
    <AdditionalInfo>Skype: john.123</AdditionalInfo>
  </Person>
  <Person>
    <Name>123</Name>
    <Hometown>
    </Hometown>
    <Address>
    </Address>
    <Birthday>130299621669230698</Birthday>
    <Phone>
    </Phone>
    <Email>
    </Email>
    <AdditionalInfo>
    </AdditionalInfo>
  </Person>
</People>

So, let's say that I have got 5 contacts in the list and when I try to remove all of them, it's not possible. It is possible to remove only 4 of them. When I try to remove all of them and then close/run the application, there will be no removed contacts - all of them will still be there, like I haven't removed them at all. When I try to remove 4 of them and I close/run the program, they would be deleted. When I try to remove the last one, it is not possible either - when I close/run app it would always remain there.

Also, sometimes there is an error as well, when I try to just select some of the contacts - usually after already deleting them. So, just to make things clear, let's say that I have got 10 contacts and remove 5 of them, when I try to select the sixth contact - the error shows:

IMAGE

I think maybe this part of the code is bugged:

private void listView1_SelectedIndexChanged(object sender, System.EventArgs e)
        {
            if (listView1.SelectedItems.Count == 0)
            {
                toolStripEdit.Enabled = false;
                RefreshAll();
                return;
            }
            Person person = new Person();
            person = FindPerson(listView1.SelectedItems[0].Text);
            txt_Name.Text = person.Name;
            txt_City.Text = person.Hometown;
            txt_Address.Text = person.Address;
            txt_Phone.Text = person.Phone;
            txt_Mail.Text = person.Email;
            txt_MoreInfo.Text = person.AdditionalInfo;
            dateTimePicker1.Value = person.Birthday;
            ReadOnlyON();
            toolStripEdit.Enabled = true;
            ExpandThis();
        }

and this one as well:

void Rmv()
        {
            if (Properties.Settings.Default.Remove == true)
            {
                DialogResult dialogResult = MessageBox.Show("Are you sure you want to delete this contact?", "Confirm", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
                if (dialogResult == DialogResult.Yes)
                {
                    Remove();
                    if (Properties.Settings.Default.Sync == true) { Sync(); }
                }
                else if (dialogResult == DialogResult.No)
                {
                    return;
                }
            }
            else
            {
                Remove();
                if (Properties.Settings.Default.Sync == true) { Sync(); }
            }
        }
        void Remove()
        {
            Person person = new Person();
            person = FindPerson(listView1.SelectedItems[0].Text);
            if (listView1.SelectedItems.Count > 0)
            {
                try
                {
                    if (listView1.SelectedItems.Count == 0) return;
                    people.RemoveAt(listView1.SelectedItems[0].Index);
                    foreach (ListViewItem eachItem in listView1.SelectedItems)
                    {
                        listView1.Items.Remove(eachItem);
                    }
                }
                catch { }
                ClearAll();
                ReadOnlyON();
            }
            else
            {
                MessageBox.Show("Nothing is selected!", "Notification", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
            ReadOnlyOFF();
            UserCount();
            if (Properties.Settings.Default.Sync == true) { Sync(); }
        }

Since it doesn't makes sense to upload the whole code here, I have uploaded it here if someone wants to help and take a closer look at it.

Thanks in advance.

How can I solve this issue?

@EDIT:

This is the connection between listview and XML:

private void Main_Load(object sender, EventArgs e)
        {
            LoadContacts();
        }

void LoadContacts()
        {
            string path = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
            string phonebook_path = path + "\\Phonebook\\Contacts.xml";
            if (!File.Exists(phonebook_path))
            {
                XmlTextWriter xW = new XmlTextWriter(phonebook_path, Encoding.UTF8);
                xW.WriteStartElement("People");
                xW.WriteEndElement();
                xW.Close();
            }
            XmlDocument xDoc = new XmlDocument();
            xDoc.Load(phonebook_path);
            foreach (XmlNode xNode in xDoc.SelectNodes("People/Person"))
            {
                Person p = new Person();
                p.Name = xNode.SelectSingleNode("Name").InnerText;
                p.Hometown = xNode.SelectSingleNode("Hometown").InnerText;
                p.Address = xNode.SelectSingleNode("Address").InnerText;
                p.Birthday = DateTime.FromFileTime(Convert.ToInt64(xNode.SelectSingleNode("Birthday").InnerText));
                p.Phone = xNode.SelectSingleNode("Phone").InnerText;
                p.Email = xNode.SelectSingleNode("Email").InnerText;
                p.AdditionalInfo = xNode.SelectSingleNode("AdditionalInfo").InnerText;
                people.Add(p);
                listView1.Items.Add(p.Name);
                UserCount();
            }
        }

private void Main_FormClosing(object sender, FormClosingEventArgs e)
        {
            XmlDocument xDoc = new XmlDocument();
            string path = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
            string phonebook_path = path + "\\Phonebook\\Contacts.xml";
            xDoc.Load(phonebook_path);
            XmlNode xNode = xDoc.SelectSingleNode("People");
            xNode.RemoveAll();
            foreach (Person p in people)
            {
                XmlNode xTop = xDoc.CreateElement("Person");
                XmlNode xName = xDoc.CreateElement("Name");
                XmlNode xHometown = xDoc.CreateElement("Hometown");
                XmlNode xAddress = xDoc.CreateElement("Address");
                XmlNode xBirthday = xDoc.CreateElement("Birthday");
                XmlNode xPhone = xDoc.CreateElement("Phone");
                XmlNode xEmail = xDoc.CreateElement("Email");
                XmlNode xAdditionalInfo = xDoc.CreateElement("AdditionalInfo");
                xName.InnerText = p.Name;
                xHometown.InnerText = p.Hometown;
                xAddress.InnerText = p.Address;
                xBirthday.InnerText = p.Birthday.ToFileTime().ToString();
                xPhone.InnerText = p.Phone;
                xEmail.InnerText = p.Email;
                xAdditionalInfo.InnerText = p.AdditionalInfo;
                xTop.AppendChild(xName);
                xTop.AppendChild(xHometown);
                xTop.AppendChild(xAddress);
                xTop.AppendChild(xBirthday);
                xTop.AppendChild(xPhone);
                xTop.AppendChild(xEmail);
                xTop.AppendChild(xAdditionalInfo);
                xDoc.DocumentElement.AppendChild(xTop);
                xDoc.Save(phonebook_path);
            }
        }