para metre
var cmd = new SqlCommand(); con.Open(); cmd.Parameters.Add(new SqlParameter("adisoyadi", textBox1.Text)); cmd.Parameters.Add(new SqlParameter("id", textBox2.Text)); cmd.Connection = con; cmd.CommandText = "update Eczane set AdiSoyadi = @adisoyadi where EczaneID = @id"; cmd.ExecuteNonQuery(); con.Close();