public void DeleteNote(string receiver, long noteId)
{
using (var conn = this.Connection)
using (var mc = new MySqlCommand("DELETE FROM `notes` WHERE `receiver` = @receiver AND `noteId` = @noteId", conn))
{
mc.Parameters.AddWithValue("@receiver", receiver);
mc.Parameters.AddWithValue("@noteId", noteId);
mc.ExecuteNonQuery();
}
}