Example 1
| The code is as follows |
Copy Code |
| Using System;
Using System.Collections.Generic;
Using System.Linq;
Using System.Text;
Using System.Net; Namespace Csharptest
{
Class Program
{
static void Main (string[] args)
{
Console.Write (new program (). GetHostInfo ());
Console.ReadLine ();
}
Get information such as local IPD
Protected string GetHostInfo ()
{
StringBuilder hostinfo = new StringBuilder ("");
ipaddress[] Iphost = dns.gethostaddresses (Dns.gethostname ());
Hostinfo.append ("This machine Name:");
Hostinfo.append (Dns.gethostname ());
Hostinfo.append ("RN");
Hostinfo.append ("IP address:");
Hostinfo.append ("RN"); foreach (IPAddress address in iphost)
{
Hostinfo.append (address. ToString ());
Hostinfo.append ("RN");
} return hostinfo.tostring ();
}
}
}
|
Console output Results:
This machine name: meteor-pc
IP Address:
Fe80::a1a2:949c:1a51:5e6c%11
2002:b46f:20fa::b46f:20fa
169.254.94.108
180.111.32.250
Example 2
| The code is as follows |
Copy Code |
public static IPAddress Gethostip ()
{
Iphostentry ipe = Dns.gethostentry (Dns.gethostname ());
IPAddress IP = ipe. ADDRESSLIST[0];
return IP;
}
Private String getipaddress ()
{
String str;
String result = "";
String hostName = Dns.gethostname ();
ipaddress[] MyIP = dns.gethostaddresses (hostName);
foreach (IPAddress address in MyIP)
{
str = address. ToString ();
for (int i = 0; i < str. Length; i++)
{
if (Str[i] >= ' 0 ' && str[i] <= ' 9 ' | | | str[i] = = '. ') result = STR;
}
}
return result;
}
|
Example 3
The above method can not meet my needs, and then I search in Google some, and there is no good way, so I groped to write down this method. If you think there's something wrong
| The code is as follows |
Copy Code |
| <summary>
Get native IP
</summary>
private String Getlocalip ()
{
Native IP Address
String strlocalip = "";
Get the computer name
String strpcname = Dns.gethostname ();
Get an array of native IP addresses
Iphostentry ipentry = Dns.gethostentry (strpcname);
Traversing an array
foreach (Var ipadd in ipentry.addresslist)
{
Determines whether the current string is the correct IP address
if (Isrightip (ipadd.tostring ()))
{
Get local IP Address
Strlocalip = Ipadd.tostring ();
End Loop
Break
}
}
Return local IP Address
return strlocalip;
}
?//Get gateway Address
private String Getgateway ()
{
Gateway Address
String strgateway = "";
Get all network adapters
networkinterface[] nics = networkinterface.getallnetworkinterfaces ();
Traversing an array
foreach (Var network in NICs)
{
IP object for a single network adapter
Ipinterfaceproperties IP = network.getipproperties ();
Gets the gateway for this IP object
gatewayipaddressinformationcollection gateways = IP. gatewayaddresses;
foreach (Var gateWay in gateways)
{
If you can ping through the gateway
if (ISPINGIP (gateWay.Address.ToString ()))
{
Get gateway Address
Strgateway = GateWay.Address.ToString ();
Jump out of the loop
Break
}
}
If you've got the gateway address
if (Strgateway.length > 0)
{
Jump out of the loop
Break
}
}
Return to Gateway address
return strgateway;
}
?///<summary>
Determine if it is the correct IP address
</summary>
<param name= "Stripadd" > Need to judge the string </param>
<returns>true = is false = no </returns>
public static bool Isrightip (string stripadd)
{
Using regular expressions to determine whether a string conforms to IPV4 format
if (Regex.IsMatch (Stripadd, "[0-9]{1,3}\.[ 0-9]{1,3}\. [0-9] {1,3}\. [0-9] {1,3} "))
{
Split string by decimal point
string[] ips = Stripadd.split ('. ');
if (IPs. Length = = 4 | | Ips. Length = = 6)
{
If the IPV4 rule is met
if (System.Int32.Parse (Ips[0]) < 256 && System.Int32.Parse (ips[1)) < 256 & System.Int32.Parse (ips[2)) < 256 & System.Int32.Parse (Ips[3]) < 256)
That's right
return true;
If you do not meet
Else
Error
return false;
}
Else
Error
return false;
}
Else
Error
return false;
}
?///<summary>
///Attempt to ping specifies whether IP can ping
///</summary>
///<param name= "StrIP" > Specify IP< ;/param>
///<returns>true is false </returns>
public static bool Ispingip (string StrIP) {
try
{
//Create Ping Object
Ping ping = new ping ();
//Accept ping return value
pingreply reply = ping. Send (StrIP, 1000);
//ping Pass
return true;
}
catch
{
//ping failure
& nbsp; return false;
}
} |
