private void deleteContact_Click(object sender, EventArgs e)
{
using (var context = new ContactsContext())
{
try
{
var contact = context.Contacts.Find(int.Parse(Id));
context.Contacts.Remove(contact);
context.SaveChanges();
}
catch (DbEntityValidationException ex)
{
MessageBox.Show("Please make sure contact has been selected from the list box first!", "");
Console.WriteLine(ex);
}
catch (ArgumentNullException ex)
{
MessageBox.Show("Please make sure contact has been selected from the list box first!", "");
Console.WriteLine(ex);
}
context.Database.Connection.Close();
}
}
private void retrieveContactsBtn_Click(object sender, EventArgs e)
{
using (var context = new ContactsContext())
{
try
{
displayContactsListBox.Items.Clear();
foreach (var c in context.Contacts.Include("PhoneNumbers").ToList())
{
displayContactsListBox.Items.Add(c);
}
}
catch (ArgumentNullException ex)
{
MessageBox.Show("Please add some contacts first!", "");
Console.WriteLine(ex);
}
context.Database.Connection.Close();
}
}
private void updateContact_Click(object sender, EventArgs e)
{
using (var context = new ContactsContext())
{
try
{
var contact = context.Contacts.Find(int.Parse(Id));
foreach (var c in context.Contacts.Include("PhoneNumbers").ToList())
{
if (c.Id == int.Parse(Id))
{
contact.FirstName = firstName_textBox.Text;
contact.Surname = lastName_textBox.Text;
contact.PhoneNumbers[0].Number = phoneNumber_textBox.Text;
MessageBox.Show("Are you sure?", "", MessageBoxButtons.YesNo);
context.SaveChanges();
clearFormFields();
}
}
}
catch (ArgumentNullException ex)
{
MessageBox.Show("All fields must be filled!", "");
Console.WriteLine(ex);
}
context.Database.Connection.Close();
}
}
private void submitData_btn_Click(object sender, EventArgs e)
{
var contact = new Contact
{
FirstName = firstName_textBox.Text,
Surname = lastName_textBox.Text
};
contact.PhoneNumbers.Add(
new PhoneNumber
{
Number = phoneNumber_textBox.Text
});
using (var context = new ContactsContext())
{
try
{
context.Contacts.Add(contact);
try
{
context.SaveChanges();
}
catch(DbEntityValidationException ex)
{
MessageBox.Show("Please make sure all fields are filled!", "");
Console.WriteLine(ex);
}
}
catch (ArgumentNullException ex)
{
MessageBox.Show("All fields must be filled!", "");
Console.WriteLine(ex);
}
context.Database.Connection.Close();
}
}
