using a table adapter to insert data into a SQL Server database from a string array in C#

Question

I have the following method:

public void LottoTest(object sender, EventArgs e)
        {
            Dictionary<int, int> numbers = new Dictionary<int, int>();
            Random generator = new Random();
            while (numbers.Count < 6)
            {
                numbers[generator.Next(1, 49)] = 1;
            }

            string[] lotto = numbers.Keys.OrderBy(n => n).Select(s => s.ToString()).ToArray();

            foreach (String _str in lotto)
            {
                Response.Write(_str);
                Response.Write(",");
            }
        }

I would like to insert the contents of the lotto array into a SQL Server 2008 database. The problem is i dont know how to do this at all. I have searched various ways insert database using C# and i find using a table adapter to create stored procedures is the best.

How do i utilise this table adapter to insert the data from the lotto array?

Answer 1

I would start reading here:

MSDN Table Adapters Overview

That being said - here is how I would do it (depending how the numbers were passed in to me).

using System.Data.SqlClient;


namespace ConsoleApplication1
{
    public class Lotto
    {
        public void InsertLottoNumbers(int[] lottonumbers)
        {
            var connectionstring = "Server=myServerAddress;Database=myDataBase;User Id=myUsername;Password=myPassword;";

            using (var con = new SqlConnection(connectionstring))  // Create connection with automatic disposal
            {
                con.Open();
                using (var tran = con.BeginTransaction())  // Open a transaction
                {
                    // Create command with parameters  (DO NOT PUT VALUES IN LINE!!!!!)
                    string sql =
                        "insert into MyTable(val1,val2,val3,val4,val5,val6) values (@val1,@val2,@val3,@val4,@val5,@val6)";
                    var cmd = new SqlCommand(sql, con);
                    cmd.Parameters.AddWithValue("val1", lottonumbers[0]);
                    cmd.Parameters.AddWithValue("val2", lottonumbers[1]);
                    cmd.Parameters.AddWithValue("val3", lottonumbers[2]);
                    cmd.Parameters.AddWithValue("val4", lottonumbers[3]);
                    cmd.Parameters.AddWithValue("val5", lottonumbers[4]);
                    cmd.Parameters.AddWithValue("val6", lottonumbers[5]);

                    cmd.ExecuteNonQuery(); // Insert Record

                    tran.Commit();  // commit transaction
                }
            }
        }
    }
}