How to write back into a SQL database using Console Application

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.SqlClient;

namespace ReportOrders
{
    class Report
    {
        static void Main(string[] args)
        {
            SqlConnection dataConn = new SqlConnection();

            try
            {
                dataConn.ConnectionString =
                    "Integrated Security=true;Initial Catalog=AdventureWorks;" +
                    "Data Source=.";
                dataConn.Open();
                Console.Write("Please enter a Manager ID ");
                string EmployeeID = Console.ReadLine();
                SqlCommand dataComm = new SqlCommand();
                dataComm.Connection = dataConn;
                dataComm.CommandText =
                    "SELECT EmployeeID, ContactID,Title, BirthDate " +
                    "FROM HumanResources.Employee WHERE ManagerID='" + EmployeeID + "'";
                Console.WriteLine("About to execute: {0}\n\n", dataComm.CommandText);
                SqlDataReader dataReader = dataComm.ExecuteReader();
                while (dataReader.Read())
                {
                    int ContactID = dataReader.GetInt32(0);
                    string Title = dataReader.GetString(2);
                    int BirthDate = dataReader.GetInt32(1);                   
                    Console.WriteLine(
                        "EmployeeID: {0}\nID: {1}\n{2}\n{3}\n", EmployeeID, ContactID, Title, BirthDate);
                }
                dataReader.Close();
            }
            catch (SqlException e)
            {
                Console.WriteLine("Error accessing the database: {0}", e.Message);

            }
            finally
            {
                dataConn.Close();
            }
        }
    }
}