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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using _20171117_Form_EF_3.Data;

namespace _20171117_Form_EF_3
{
public partial class frmOgretmenler : Form
{
public frmOgretmenler()
{
InitializeComponent();
}

OkulContext db = new OkulContext();

void Doldur()
{
dataGridView1.AutoGenerateColumns = false;
dataGridView1.DataSource = null;
dataGridView1.DataSource = db.Ogretmenler.ToList();
}

void temizle()
{
txtID.Text = "";
txtAd.Text = "";
txtDogumYeri.Text = "";
txtKAdi.Text = "";
txtSoyad.Text = "";
txtTC.Text = "";
txtYas.Text = "";
dateTimePicker1.Value = DateTime.Now;
txtSifre.Text = "";
}

private void frmOgretmenler_Load(object sender, EventArgs e)
{
Doldur();
}

private void btnYeni_Click(object sender, EventArgs e)
{
temizle();

}

private void btnGuncelle_Click(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows.Count > 0)
{
int id = int.Parse(dataGridView1.SelectedRows[0].Cells[0].Value.ToString());
Ogretmen o = db.Ogretmenler.Where(x => x.ID == id).SingleOrDefault();

o.Ad = txtAd.Text;
o.Soyad = txtSoyad.Text;
o.KullaniciAdi = txtKAdi.Text;
o.Sifre = txtSifre.Text;
o.TC = long.Parse(txtTC.Text);
o.Yas = int.Parse(txtYas.Text);
o.DogumYeri = txtDogumYeri.Text;
o.DogumTarihi = dateTimePicker1.Value;

db.SaveChanges();
MessageBox.Show("Güncelleme Başarılı!");
temizle();
Doldur();
}
else
MessageBox.Show("Lütfen güncellemek istediğiniz kaydı seçin!");
}

private void btnEkle_Click(object sender, EventArgs e)
{
Ogretmen o = new Ogretmen()
{
TC = long.Parse(txtTC.Text),
Ad = txtAd.Text,
Soyad = txtSoyad.Text,
DogumTarihi = dateTimePicker1.Value,
DogumYeri = txtDogumYeri.Text,
KullaniciAdi = txtKAdi.Text,
Sifre = txtSifre.Text,
Yas = int.Parse(txtYas.Text)
};

db.Ogretmenler.Add(o);
db.SaveChanges();
MessageBox.Show("Kayıt başarılı!");
temizle();
Doldur();
}

private void btnSil_Click(object sender, EventArgs e)
{
if (dataGridView1.SelectedRows.Count > 0)
{
int id = int.Parse(dataGridView1.SelectedRows[0].Cells[0].Value.ToString());
Ogretmen o = db.Ogretmenler.Where(x => x.ID == id).SingleOrDefault();
db.Ogretmenler.Remove(o);
db.SaveChanges();
MessageBox.Show("Kayıt Silindi!");
temizle();
Doldur();
}
}

private void dataGridView1_SelectionChanged(object sender, EventArgs e)
{

if (dataGridView1.SelectedRows.Count > 0)
{
int id = Convert.ToInt32(dataGridView1.SelectedRows[0].Cells[0].Value);

var sonuc = db.Ogretmenler.Where(x => x.ID == id).Single(); //Lambda--single demesinin sebebi tek kayıt dönmesi
//var sonuc2 = from m in db.Ogretmenler where m.ID == id select m; //Linq

txtID.Text = sonuc.ID.ToString();
txtTC.Text = sonuc.TC.ToString();
txtAd.Text = sonuc.Ad;
txtSoyad.Text = sonuc.Soyad;
txtDogumYeri.Text = sonuc.DogumYeri;
dateTimePicker1.Value = sonuc.DogumTarihi;
txtKAdi.Text = sonuc.KullaniciAdi;
txtSifre.Text = sonuc.Sifre;
txtYas.Text = sonuc.Yas.ToString();
}
}
}
}
     
 
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