ADO Net C# Tutorial

using System;
using System.Data;
using System.Data.SqlClient;
using System.Data.OleDb;
    class Program
    {
        static void Main(string[] args)
        {
            string sqlConnectString = "Data Source=(local);Integrated security=SSPI;Initial Catalog=AdventureWorks;";
            string sqlSelect = "SELECT * FROM Sales.SalesOrderHeader WHERE TotalDue > @TotalDue";
            SqlConnection sqlConnection = new SqlConnection(sqlConnectString);
            SqlCommand sqlCommand = new SqlCommand(sqlSelect, sqlConnection);
            sqlCommand.Parameters.Add("@TotalDue", SqlDbType.Money);
            sqlCommand.Parameters["@TotalDue"].Value = 200000;
            SqlDataAdapter sqlDa = new SqlDataAdapter(sqlCommand);
            DataTable sqlDt = new DataTable( );
            sqlDa.Fill(sqlDt);
            foreach (DataRow row in sqlDt.Rows){
                Console.WriteLine(row["SalesOrderID"]);
                Console.WriteLine(row["OrderDate"]);
                Console.WriteLine(row["TotalDue"]);
            }
        }
    }