private void btnInsert_Click(object sender, EventArgs e)
{
try
{
CONTACTS_LISTEntities context = new CONTACTS_LISTEntities();
CONTACTS_LIST directory = new CONTACTS_LIST();
directory.FIRSTNAME = txtFirst.Text;
directory.LASTNAME = txtLast.Text;
directory.EMAIL = txtEmail.Text;
directory.PHONE = txtPhone.Text;
directory.CATEGORY = comboCategory.SelectedItem.ToString();
directory.APPOINTMENT = txtAppointment.Text;
context.CONTACTS_LIST.Add(directory);
context.SaveChanges();
BindDataGridView();
ClearFields();
}
catch (InvalidOperationException)
{
MessageBox.Show("Error entering data into the database.");
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
CONTACTS_LISTEntities context = new CONTACTS_LISTEntities();
DataGridViewRow row = dataGridView1.SelectedRows[0];
string temp = row.Cells["First"].Value.ToString();
var val = context.CONTACTS_LIST.Where(t => t.FIRSTNAME.Equals(temp)).FirstOrDefault();
context.CONTACTS_LIST.Remove(val);
context.SaveChanges();
BindDataGridView();
ClearFields();
}
private void dataGridView1_CellClick(object sender, DataGridViewCellEventArgs e)
{
DataGridViewRow row = dataGridView1.SelectedRows[0];
string val = row.Cells["First"].Value.ToString();
CONTACTS_LISTEntities context = new CONTACTS_LISTEntities();
var i = context.CONTACTS_LIST.Where(t => t.FIRSTNAME.Equals(val)).FirstOrDefault();
txtFirst.Text = i.FIRSTNAME;
txtLast.Text = i.LASTNAME;
txtEmail.Text = i.EMAIL;
txtPhone.Text = i.PHONE;
comboCategory.SelectedItem = i.CATEGORY;
txtAppointment.Text = i.APPOINTMENT;
}
private void BindDataGridView()
{
CONTACTS_LISTEntities con = new CONTACTS_LISTEntities();
var list = con.CONTACTS_LIST.Select(grid => new
{
grid.FIRSTNAME,
grid.LASTNAME,
grid.EMAIL,
grid.PHONE,
grid.CATEGORY,
grid.APPOINTMENT
}).ToList();
dataGridView1.DataSource = list;
}
private void btnUpdate_Click(object sender, EventArgs e)
{
CONTACTS_LISTEntities context = new CONTACTS_LISTEntities();
DataGridViewRow row = dataGridView1.SelectedRows[0];
string temp = row.Cells["First"].Value.ToString();
var val = context.CONTACTS_LIST.Where(t => t.FIRSTNAME.Equals(temp)).FirstOrDefault();
val.FIRSTNAME = txtFirst.Text;
val.LASTNAME = txtLast.Text;
val.EMAIL = txtEmail.Text;
val.PHONE = txtPhone.Text;
val.CATEGORY = comboCategory.SelectedItem.ToString();
val.APPOINTMENT = txtAppointment.Text;
context.SaveChanges();
BindDataGridView();
ClearFields();
}
