private void AddUserToListBox()
{
User user = new User(tbUserName.Text, tbUserEmail.Text);
Users.Add(user);
EmailsList.Add(user.Email);
SaveUserToXML(user);
tbUserEmail.Text = String.Empty;
tbUserName.Text = String.Empty;
}
private void SaveUserToXML(User inputUser)
{
try
{
if (File.Exists("users.xml") == false)
{
XDocument xmlDocument = new XDocument();
XElement users = new XElement("Users");
XElement user = new XElement("User");
user.Add(new XElement("FullName", inputUser.FullName),
new XElement("Email", inputUser.Email));
users.Add(user);
xmlDocument.Add(users);
xmlDocument.Save("users.xml");
}
else
{
XDocument xDocument = XDocument.Load("users.xml");
XElement root = xDocument.Element("Users");
XElement particularUser = xDocument.Descendants("Users").
Descendants("User").
Where(u => u.Element("FullName").Value ==
inputUser.FullName).FirstOrDefault();
if (particularUser != null)
{
MessageBox.Show("There is already such user in the list");
return;
}
IEnumerable<XElement> rows = root.Descendants("User");
XElement firstRow = rows.First();
firstRow.AddBeforeSelf(
new XElement("User",
new XElement("FullName", inputUser.FullName),
new XElement("Email", inputUser.Email)));
xDocument.Save("users.xml");
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
}