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php爱好者> php文档>c#获取本机ip地址|获取本机的本地上网IP地址

c#获取本机ip地址|获取本机的本地上网IP地址

时间：2011-03-15 来源：PointNet

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:

Code
1

public string GetUserIP()
2

{
3

string _userIP;
4

if(Request.ServerVariables["HTTP_VIA"] == null)
5

{
6

userIP= Request.UserHostAddress;
7

}
8

else
9

{
10

userIP= Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
11

}
12

return userIP;
13

}
14

获取客户端MAC地址:

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);
5

private void Page_Load(object sender, System.EventArgs e)
7

{
8

// 在此处放置用户代码以初始化页面
9

try
10

{
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")
20

{
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

}
27

while(mac_src.Length<12)
29

{
30

mac_src = mac_src.Insert(0,"0");
31

}
32

string mac_dest="";
34

for(int i=0;i<11;i++)
36

{
37

if (0 == (i % 2))
38

{
39

if ( i == 10 )
40

{
41

mac_dest = mac_dest.Insert(0,mac_src.Substring(i,2));
42

}
43

else
44

{
45

mac_dest ="-" + mac_dest.Insert(0,mac_src.Substring(i,2));
46

}
47

}
48

}
49

Response.Write ("欢迎来自IP为"+userip+ "<br>" + ",MAC地址为"+mac_dest+"的朋友！"
51

+ "<br>");
53

}
54

catch(Exception err)
55

{
56

Response.Write(err.Message);
57

}
58

}
59

获取服务器IP一：

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

}
14

获取服务器IP及MAC地址二：

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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