private void Updatebtn_Click(object sender, RoutedEventArgs e)
{
int id = int.Parse(txtbox.Text);
tbl = (from x in db.sampleTables
where x.id == id
select x).First();
tbl.Name = TextBox.Text;
db.SaveChanges();
txtbox.Clear();
TextBox.Clear();
}
private void Deletebtn_Click(object sender, RoutedEventArgs e)
{
int id = int.Parse(txtbox.Text);
tbl = (from x in db.sampleTables
where x.id == id
select x).First();
db.sampleTables.Remove(tbl);
db.SaveChanges();
txtbox.Clear();
TextBox.Clear();
MessageBox.Show("Pomyślnie usunięto!");
}