c# 获取客户端ip、mac、机器名、操作系统、浏览器信息

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

using System.Text;
using System.Runtime.InteropServices;

/// <summary>
///NetHelper 的摘要说明
/// </summary>
public class NetHelper
{
public NetHelper()
{

}

public static string GetBrowserType()
{
return HttpContext.Current.Request.Browser.Type;
}

public static string GetSysVersion()
{
string Agent = HttpContext.Current.Request.ServerVariables["HTTP_USER_AGENT"];

if (Agent.IndexOf("NT 4.0") > 0)
{
return "Windows NT ";
}
else if (Agent.IndexOf("NT 5.0") > 0)
{
return "Windows 2000";
}
else if (Agent.IndexOf("NT 5.1") > 0)
{
return "Windows XP";
}
else if (Agent.IndexOf("NT 5.2") > 0)
{
return "Windows 2003";
}
else if (Agent.IndexOf("NT 6.0") > 0)
{
return "Windows Vista";
}
else if (Agent.IndexOf("WindowsCE") > 0)
{
return "Windows CE";
}
else if (Agent.IndexOf("NT") > 0)
{
return "Windows NT ";
}
else if (Agent.IndexOf("9x") > 0)
{
return "Windows ME";
}
else if (Agent.IndexOf("98") > 0)
{
return "Windows 98";
}
else if (Agent.IndexOf("95") > 0)
{
return "Windows 95";
}
else if (Agent.IndexOf("Win32") > 0)
{
return "Win32";
}
else if (Agent.IndexOf("Linux") > 0)
{
return "Linux";
}
else if (Agent.IndexOf("SunOS") > 0)
{
return "SunOS";
}
else if (Agent.IndexOf("Mac") > 0)
{
return "Mac";
}
else if (Agent.IndexOf("Linux") > 0)
{
return "Linux";
}
else if (Agent.IndexOf("Windows") > 0)
{
return "Windows";
}
return "unknow";

}

/// <summary>
/// 如果有代理那么越过代理直接取值
/// </summary>
/// <returns></returns>
public static string GetClientIp()
{
if (HttpContext.Current.Request.ServerVariables["HTTP_VIA"] != null)
return HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"].ToString();
else
return HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString();
}

public static string GetHostName(string ipStr)
{

string hostName = string.Empty;
try
{
System.Net.IPAddress ip = System.Net.IPAddress.Parse(ipStr);
System.Net.IPHostEntry host = System.Net.Dns.GetHostEntry(ip);
hostName = host.HostName;
}
catch
{ }
return hostName;
}

[DllImport("Iphlpapi.dll")]
static extern int SendARP(Int32 DestIP, Int32 SrcIP, ref Int64 MacAddr, ref Int32 PhyAddrLen);
[DllImport("Ws2_32.dll")]
static extern Int32 inet_addr(string ipaddr);
/// <summary>
/// SendArp获取MAC地址
/// </summary>
/// <param name="RemoteIP">目标机器的IP地址如(192.168.1.1)</param>
/// <returns>目标机器的mac 地址</returns>
public static string getMacAddr_Remote(string RemoteIP)
{
StringBuilder macAddress = new StringBuilder();
try
{
Int32 remote = inet_addr(RemoteIP);
Int64 macInfo = new Int64();
Int32 length = 6;
SendARP(remote, 0, ref macInfo, ref length);
string temp = Convert.ToString(macInfo, 16).PadLeft(12, '0').ToUpper();
int x = 12;
for (int i = 0; i < 6; i++)
{
if (i == 5)
{
macAddress.Append(temp.Substring(x - 2, 2));
}
else
{
macAddress.Append(temp.Substring(x - 2, 2) + "-");
}
x -= 2;
}
return macAddress.ToString();
}
catch
{
return macAddress.ToString();
}
}
}