private void Initialize()
{
_db = new InvoiceProjectContext();
_selectedCustomer = null;
_selectedProduct = null;
_invoiceDetail = new HashSet <InvoiceDetail>();
_selectedInvoiceDetail = null;
dataGridView1.DataSource = _invoiceDetail;
InvoiceDetail invoice = _db.InvoiceDetails.ToList().LastOrDefault();
_invoiceID = invoice == null ? 1 : invoice.InvoiceID;
lblInvoiceID.Text = _invoiceID.ToString();
cmbProductName.DisplayMember = "ProductName";
cmbProductName.ValueMember = "ProductID";
cmbProductName.DataSource = _db.Products.ToList();
cmbCity.DisplayMember = "CityName";
cmbCity.ValueMember = "CityID";
cmbCity.DataSource = _db.Cities.ToList();
cmbCity.Enabled = false;
cmbCounty.DisplayMember = "CountyName";
cmbCounty.ValueMember = "CountyID";
cmbCounty.DataSource = _db.Counties.ToList();
cmbCounty.Enabled = false;
cmbCustomer.DisplayMember = "CompanyName";
cmbCustomer.ValueMember = "CustomerID";
cmbCustomer.DataSource = _db.Customers.ToList();
}
private void Initialize()
{
_db = new InvoiceProjectContext();
selectedCustomer = null;
_invoiceHeader = new List <InvoiceHeader>();
cmbCity.DisplayMember = "CityName";
cmbCity.ValueMember = "CityID";
cmbCity.DataSource = _db.Cities.ToList();
}