C# 网络连接判断(7)

longlfag;

stringstrConnectionDev = "";

if (InternetGetConnectedState(out lfag, 0))

strConnectionDev = "网络连接正常!";

else

strConnectionDev = "网络连接不可用!";

if ((lfag& INTERNET_CONNECTION_OFFLINE) > 0)

strConnectionDev += "OFFLINE 本地系统处于离线模式。";

if ((lfag& INTERNET_CONNECTION_MODEM) > 0)

strConnectionDev += "Modem 本地系统使用调制解调器连接到互联网。"; if ((lfag& INTERNET_CONNECTION_LAN) > 0)

strConnectionDev += "LAN 本地系统使用的局域网连接到互联网。"; if ((lfag& INTERNET_CONNECTION_PROXY) > 0)

strConnectionDev += "a Proxy";

if ((lfag& INTERNET_CONNECTION_MODEM_BUSY) > 0)

strConnectionDev += "Modem but modem is busy";

this.Response.Write("<script>alert('" + strConnectionDev + "');</script>");

}