using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace IStation.Untity
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{
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/// <summary>
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/// 网络工具类
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/// </summary>
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public class InternetHelper
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{
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private const int INTERNET_CONNECTION_MODEM = 1;
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private const int INTERNET_CONNECTION_LAN = 2;
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private const int INTERNET_CONNECTION_PROXY = 4;
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private const int INTERNET_CONNECTION_MODEM_BUSY = 8;
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///导入判断网络是否连接的 .dll
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[DllImport("wininet.dll", EntryPoint = "InternetGetConnectedState")]
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/// <summary>
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/// 判断网络状况的方法,返回值true为连接，false为未连接
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/// </summary>
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/// <param name="conState"> </param>
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/// <param name="reder"> </param>
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public extern static bool InternetGetConnectedState(out int conState, int reder);
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/*使用方法
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var internetCode = 0;
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var hasInternet = InternetUtils.InternetGetConnectedState(out internetCode, 0);
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if (!hasInternet)
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{
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XtraMessageBox.Show("当前未连接网络！");
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return;
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}
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*/
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//int dwFlag = 0;
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//string netstatus = "";
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//if (!InternetGetConnectedState(ref dwFlag, 0))
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//Console.WriteLine("未联网！");
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//else
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//{
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//if ((dwFlag & INTERNET_CONNECTION_MODEM) != 0)
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//netstatus += " 采用调治解调器上网 /n";
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//if ((dwFlag & INTERNET_CONNECTION_LAN) != 0)
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//netstatus += " 采用网卡上网 /n";
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//if ((dwFlag & INTERNET_CONNECTION_PROXY) != 0)
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//netstatus += " 采用代理上网 /n";
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//if ((dwFlag & INTERNET_CONNECTION_MODEM_BUSY) != 0)
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//netstatus += " MODEM被其他非INTERNET连接占用 /n";
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//}
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}
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}
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