private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text == "1537")
{
BicycleRouteEntities2 br = new BicycleRouteEntities2();
var delete_all = from c in br.Data select c;
br.Data.RemoveRange(delete_all);
br.SaveChanges();
MessageBox.Show("Данные удалены!");
}
else
{
MessageBox.Show("Неправильный код.");
}
textBox1.Clear();
}
