private void cmbKategori_SelectedIndexChanged(object sender, EventArgs e)
{
if (cmbKategori.SelectedItem == null)
{
return;
}
CategoryViewModel cat = cmbKategori.SelectedItem as CategoryViewModel;
var db = new NorthEntities();
var sorgu = db.Categories
.First(x => x.CategoryID == cat.CategoryID)
.Products
.Select(x => new ProductViewModel
{
ProductID = x.ProductID,
ProductName = x.ProductName,
UnitPrice = x.UnitPrice
})
.OrderBy(x => x.ProductName)
.ToList();
// lstUrunler.DataSource = db.Products.Where(x => x.CategoryID == cat.CategoryID).OrderBy(x => x.ProductName).ToList();
// lstUrunler.DisplayMember = "ProductName";
lstUrunler.DataSource = sorgu;
gbUrun.Visible = sorgu.Count > 0;
}
private void btnKatKaydet_Click(object sender, EventArgs e)
{
try
{
var db = new NorthEntities();
db.Categories.Add(new Category()
{
CategoryName = string.IsNullOrEmpty(txtKategoriAdi.Text) ? null: txtKategoriAdi.Text,
Description = txtAciklama.Text,
});
var sonuc = db.SaveChanges();
MessageBox.Show($@"{sonuc} kayit eklendi.");
KategorileriGetir();
}
catch (DbEntityValidationException dbEx)
{
foreach (var validationError in dbEx.EntityValidationErrors)
{
foreach (var error in validationError.ValidationErrors)
{
if (error.PropertyName == "CategoryName")
{
ep1.SetError(txtKategoriAdi, error.ErrorMessage);
}
}
}
MessageBox.Show(EntityHelper.ValidationMessage(dbEx), @"Bir Hata Olustu", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void KategorileriGetir()
{
NorthEntities db = new NorthEntities();
var kategoriler1 = db.Categories
.OrderBy(category => category.CategoryName)
.Select(x => new CategoryViewModel
{
CategoryID = x.CategoryID,
CategoryName = x.CategoryName,
ProductCount = x.Products.Count
})
.ToList();
var kategoriler2 = db.Categories
.OrderBy(category => category.CategoryName)
.Select(x => new CategoryViewModel
{
CategoryID = x.CategoryID,
CategoryName = x.CategoryName,
ProductCount = x.Products.Count
})
.ToList();
cmbUrunKategori.DataSource = kategoriler2;
cmbKategori.DataSource = kategoriler1;
}
private void silToolStripMenuItem_Click(object sender, EventArgs e)
{
if (lstUrunler.SelectedItem == null)
{
return;
}
var urunId = (lstUrunler.SelectedItem as ProductViewModel).ProductID;
var cevap = MessageBox.Show("Secili urunu silmek istiyor musunuz?", "Uyarı!", MessageBoxButtons.YesNo,
MessageBoxIcon.Question);
if (cevap != DialogResult.Yes)
{
return;
}
try
{
var db = new NorthEntities();
var urun = db.Products.Find(urunId);
db.Products.Remove(urun);
MessageBox.Show($"{db.SaveChanges()} kayıt silindi.");
KategorileriGetir();
}
catch (DbUpdateException)
{
MessageBox.Show("Silmek istediginiz kayıt baska bir tabloda bulundugu icin silemezsiniz.", "Hata", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void btnUrunGuncelle_Click(object sender, EventArgs e)
{
try
{
ep1.Clear();
var db = new NorthEntities();
var seciliUrun = lstUrunler.SelectedItem as ProductViewModel;
var urun = db.Products.Find(seciliUrun.ProductID);
urun.ProductName = txtUrunAdi.Text;
urun.UnitPrice = nuFiyat.Value;
urun.CategoryID = (cmbUrunKategori.SelectedItem as CategoryViewModel).CategoryID;
int sonuc = db.SaveChanges();
KategorileriGetir();
MessageBox.Show($"{sonuc} urun guncellendi.");
}
catch (DbEntityValidationException dbEx)
{
foreach (var validationError in dbEx.EntityValidationErrors)
{
foreach (var error in validationError.ValidationErrors)
{
if (error.PropertyName == "ProductName")
{
ep1.SetError(txtUrunAdi, error.ErrorMessage);
}
}
}
MessageBox.Show(EntityHelper.ValidationMessage(dbEx), @"Bir Hata Olustu", MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void lstUrunler_SelectedIndexChanged(object sender, EventArgs e)
{
if (lstUrunler.SelectedItem == null)
{
return;
}
var seciliUrun = lstUrunler.SelectedItem as ProductViewModel;
var db = new NorthEntities();
var urun = db.Products.Find(seciliUrun.ProductID);
txtUrunAdi.Text = urun.ProductName;
nuFiyat.Value = urun.UnitPrice ?? 0;
var katId = urun.CategoryID;
cmbUrunKategori.SelectedItem = katId;
var uruncatList = cmbUrunKategori.DataSource as List <CategoryViewModel>;
foreach (var item in uruncatList)
{
if (item.CategoryID == urun.CategoryID)
{
cmbUrunKategori.SelectedItem = item;
break;
}
}
}
