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53 lines
1.3 KiB
53 lines
1.3 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Runtime.InteropServices;
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namespace Utils.Internet
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{
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public class InternetUtil
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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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[DllImport("winInet.dll")]
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private static extern bool InternetGetConnectedState(ref int dwFlag, int dwReserved);
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/// <summary>
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/// 是否联网
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/// </summary>
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public static bool IsConnected()
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{
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System.Int32 dwFlag = new int();
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if (!InternetGetConnectedState(ref dwFlag, 0))
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return false;
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return true;
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}
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/// <summary>
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/// 是否采用猫联网。如果没联网，返回false
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/// </summary>
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public static bool IsConnectedByModem()
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{
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System.Int32 dwFlag = new int();
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if (!InternetGetConnectedState(ref dwFlag, 0))
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return false;
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else if ((dwFlag & INTERNET_CONNECTION_MODEM) != 0)
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return true;
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return false;
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}
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/// <summary>
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/// 是否采用LAN联网。如果没联网，返回false
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/// </summary>
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public static bool IsConnectedByLAN()
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{
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System.Int32 dwFlag = new int();
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if (!InternetGetConnectedState(ref dwFlag, 0))
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return false;
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else if ((dwFlag & INTERNET_CONNECTION_LAN) != 0)
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return true;
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return false;
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}
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}
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}
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