C#檢查網(wǎng)絡(luò)是否連通

C#.Net檢測網(wǎng)絡(luò)在線狀態(tài)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.InteropServices;

namespace Jsons.cn
{
    public partial class Connected : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            //True 為連通   False 為斷開
            bool Urlstate = IsConnected();
            Response.Write(Urlstate);
        }

        [DllImport("wininet.dll")]
        private extern static bool InternetGetConnectedState(out int connectionDescription, int reservedValue);
        /// <summary>
        ///  C#檢查網(wǎng)絡(luò)是否連通
        /// </summary>
        /// <returns></returns>
        private bool IsConnected()
        {
            int I = 0;
            bool state = InternetGetConnectedState(out I, 0);
            return state;
        }
    }
}

原文鏈接：C#檢查網(wǎng)絡(luò)是否連通