This isn't the exact code, but it is a starting point. All the bits you need are there.
using (SqlConnection con = new SqlConnection(strConnect))
{
con.Open();
using (SqlCommand cmd = new SqlCommand("SELECT description FROM myTable WHERE ID=@ID", con))
{
cmd.Parameters.AddWithValue("@ID", myId);
using (SqlDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
string desc = (string) reader["description"];
Console.WriteLine("ID: {0}\n {1}", myId, desc);
}
}
}
}