Csharp/C Sharp/Database ADO.net/ADO.NET Events — различия между версиями

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Версия 15:31, 26 мая 2010

Using ADO.NET Events

/*
 * C# Programmers Pocket Consultant
 * Author: Gregory S. MacBeth
 * Email: gmacbeth@comporium.net
 * Create Date: June 27, 2003
 * Last Modified Date:
 * Version: 1
 */
using System;
using System.Data;
using System.Data.SqlClient;
namespace Client.Chapter_13___ADO.NET
{
    public class UsingADONETEvents
    {
        static void Main(string[] args)
        {
            SqlConnection MyConnection = new SqlConnection(@"Data Source=(local); Initial Catalog = CaseManager; Integrated Security=true");
            MyConnection.StateChange += new StateChangeEventHandler(OnStateChange);
            MyConnection.Open(); //Trigger Open Event
            MyConnection.Close();
        }
        public static void OnStateChange(object sender, System.Data.StateChangeEventArgs e)
        {
            Console.WriteLine("Connection State Chnaged: {0}", ((SqlConnection)sender).State);
        }
    }
}