Inserting value in MY SQL if value is in Hindi

public void InsertMail(string uid, string from, string to, string subject, DateTime datetime, string message)
        {
            try
            {

                MySqlCommand cmd = new MySqlCommand();

                cmd.Parameters.AddWithValue("@unique_id", uid);
                cmd.Parameters.AddWithValue("@sender", from);
                cmd.Parameters.AddWithValue("@reciever", to);
                cmd.Parameters.AddWithValue("@subject", subject);
                cmd.Parameters.AddWithValue("@date", datetime);
                cmd.Parameters.AddWithValue("@message", message);
                cmd.Parameters.AddWithValue("@mail_status", "unread");
                cmd.Connection = con;
                string query = "Insert Ignore into gmail_inbox1(unique_id,sender,reciever,subject,date,message,mail_status) values (@unique_id,@sender,@reciever,@subject,@date,@message,@mail_status) ";
                cmd.CommandText = query;
                cmd.ExecuteNonQuery();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
            finally
            {

            }

        }