具体方法为如下:
private void btnChenk_Click(object sender, System.EventArgs e)
{
System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;
if ( addressList.Length>1)
{
nativeIP.Text = addressList[0].ToString();
serverIP.Text = addressList[1].ToString();
}
else
{
nativeIP.Text = addressList[0].ToString();
serverIP.Text = "Break the line...";
}
}
通常addressList[]所得到的列表就是当前的IP地址;
如果当前是拨号上网的话addressList[0].ToString()就是
本地IP地址;addressList[1].ToString() 就是上网地址。
如果当前是使用[EnterNet 300]拨号上网的话addressList[1].ToString()
就是本地IP地址;addressList[0].ToString() 就是上网地址。
如果程序只能够检测到只有一个IP地址的话,证明当前
电脑没有在线!
获取客户端IP:
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Code
1
public string GetUserIP()
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{
3
string _userIP;
4
if(Request.ServerVariables["HTTP_VIA"] == null)
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{
6
userIP= Request.UserHostAddress;
7
}
8
else
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{
10
userIP= Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
11
}
12
return userIP;
13
}
14
获取客户端MAC地址:
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Code
1
[DllImport("Iphlpapi.dll")]
2
private static extern int SendARP(Int32 dest,Int32 host,ref Int64 mac,ref Int32 length);
3
[DllImport("Ws2_32.dll")]
4
private static extern Int32 inet_addr(string ip);
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6
private void Page_Load(object sender, System.EventArgs e)
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{
8
// 在此处放置用户代码以初始化页面
9
try
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{
11
string userip=Request.UserHostAddress;
12
string strClientIP = Request.UserHostAddress.ToString().Trim();
13
Int32 ldest = inet_addr(strClientIP); //目的地的ip
14
Int32 lhost = inet_addr(""); //本地服务器的ip
15
Int64 macinfo = new Int64();
16
Int32 len = 6;
17
int res = SendARP(ldest,0, ref macinfo, ref len);
18
string mac_src=macinfo.ToString("X");
19
if(mac_src == "0")
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{
21
if(userip=="127.0.0.1")
22
Response.Write ("正在访问Localhost!");
23
else
24
Response.Write ("欢迎来自IP为" + userip + "的朋友!" + "<br>");
25
return;
26
}
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28
while(mac_src.Length<12)
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{
30
mac_src = mac_src.Insert(0,"0");
31
}
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33
string mac_dest="";
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35
for(int i=0;i<11;i++)
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{
37
if (0 == (i % 2))
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{
39
if ( i == 10 )
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{
41
mac_dest = mac_dest.Insert(0,mac_src.Substring(i,2));
42
}
43
else
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{
45
mac_dest ="-" + mac_dest.Insert(0,mac_src.Substring(i,2));
46
}
47
}
48
}
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50
Response.Write ("欢迎来自IP为"+userip+ "<br>" + ",MAC地址为"+mac_dest+"的朋友!"
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52
+ "<br>");
53
}
54
catch(Exception err)
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{
56
Response.Write(err.Message);
57
}
58
}
59
获取服务器IP一:
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1
private void ButtonIP_Click(object sender, System.EventArgs e)
2
{
3
Syste m.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList;
4
if ( addressList.Length>1)
5
{
6
TextLIP.Text = addressList[0].ToString();
7
TextSIP.Text = addressList[1].ToString();
8
}
9
else
10
{
11
TextLIP.Text = addressList[0].ToString();TextSIP.Text = "没有可用的连接";
12
}
13
}
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15
获取服务器IP及MAC地址二:
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using System.Management;
string stringMAC = "";
string stringIP = "";
ManagementClass MC = new ManagementClass "Win32_NetworkAdapterConfiguration");
ManagementObjectCollection MOC= MC.GetInstances();
foreach(ManagementObject MO in MOC)
{
if ((bool)MO["IPEnabled"] == true){stringMAC += MO["MACAddress"].ToString();
TextMAC.Text = stringMAC.ToString();
string[] IPAddresses = (string[]) MO["IPAddress"];
if(IPAddresses.Length > 0)
stringIP = IPAddresses[0];TextIP.Text = stringIP.ToString();
}
}
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