ADO Net C# Tutorial

using System;
using System.Data;
using System.Data.SqlClient;
public class AddCustomer
{
    public static void Main() 
    {
        string connectionString = "Data Source=localhost;Initial Catalog=store;Integrated Security=SSPI";
        string procedure = "CustomerAdd";
        SqlConnection con = new SqlConnection(connectionString);
        SqlCommand cmd = new SqlCommand(procedure, con);
        cmd.CommandType = CommandType.StoredProcedure;
        SqlParameter param;
        param = cmd.Parameters.Add("@FullName", SqlDbType.NVarChar, 50);
        param.Value = "AAA";
        param = cmd.Parameters.Add("@Email", SqlDbType.NVarChar, 50);
        param.Value = "j@my.com";
        param = cmd.Parameters.Add("@Password", SqlDbType.NVarChar, 50);
        param.Value = "password";
        param = cmd.Parameters.Add("@CustomerID", SqlDbType.Int);
        param.Direction = ParameterDirection.Output;
        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
        Console.WriteLine(param.Value);
    }
}