ถามวิธีการ insert datatable ไปยัง database โดยไม่ต้องใช้for add ทีล่ะRow

            using (SqlConnection sqlConnection = new SqlConnection(connectionString))
            {
                query = "SELECT TOP 1 * FROM TABLE_NAME";
                SqlDataAdapter sqlDataAdapter = new SqlDataAdapter(query, sqlConnection);
                SqlCommandBuilder builder = new SqlCommandBuilder(sqlDataAdapter);
                sqlDataAdapter.Fill(dt); //dt is your datatable want to insert to database
                sqlDataAdapter.Update(dt);
            }