摘要:GetAdaptersInfo using C#
class libGetAdaptersInfo
{
[DllImport("iphlpapi.dll")]
private static extern int GetAdaptersInfo(IntPtr pAdapterInfo, ref Int64 pBufOutLen);
private const int MAX_ADAPTER_DESCRIPTION_LENGTH = 128;
private const int ERROR_BUFFER_OVERFLOW = 111;
private const int MAX_ADAPTER_NAME_LENGTH = 256;
private const int MAX_ADAPTER_ADDRESS_LENGTH = 8;
private const int MIB_IF_TYPE_OTHER = 1;
private const int MIB_IF_TYPE_ETHERNET = 6;
private const int MIB_IF_TYPE_TOKENRING = 9;
private const int MIB_IF_TYPE_FDDI = 15;
private const int MIB_IF_TYPE_PPP = 23;
private const int MIB_IF_TYPE_LOOPBACK = 24;
private const int MIB_IF_TYPE_SLIP = 28;
[StructLayout(LayoutKind.Sequential)]
private struct IP_ADDRESS_STRING
{
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
public string Address;
}
[StructLayout(LayoutKind.Sequential)]
private struct IP_ADDR_STRING
{
public IntPtr Next;
public IP_ADDRESS_STRING IpAddress;
public IP_ADDRESS_STRING IpMask;
public Int32 Context;
}
[StructLayout(LayoutKind.Sequential)]
private struct IP_ADAPTER_INFO
{
public IntPtr Next;
public Int32 ComboIndex;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = MAX_ADAPTER_NAME_LENGTH + 4)]
public string AdapterName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = MAX_ADAPTER_DESCRIPTION_LENGTH + 4)]
public string AdapterDescription;
public UInt32 AddressLength;
[MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_ADAPTER_ADDRESS_LENGTH)]
public byte[] Address;
public Int32 Index;
public UInt32 Type;
public UInt32 DhcpEnabled;
public IntPtr CurrentIpAddress;
public IP_ADDR_STRING IpAddressList;
public IP_ADDR_STRING GatewayList;
public IP_ADDR_STRING DhcpServer;
public bool HaveWins;
public IP_ADDR_STRING PrimaryWinsServer;
public IP_ADDR_STRING SecondaryWinsServer;
public Int32 LeaseObtained;
public Int32 LeaseExpires;
}
public static void GetAdapters()
{
long structSize = Marshal.SizeOf(typeof(IP_ADAPTER_INFO));
IntPtr pArray = Marshal.AllocHGlobal((int)new IntPtr(structSize));
int ret = GetAdaptersInfo(pArray, ref structSize);
if (ret == ERROR_BUFFER_OVERFLOW) // ERROR_BUFFER_OVERFLOW == 111
{
// Buffer was too small, reallocate the correct size for the buffer.
pArray = Marshal.ReAllocHGlobal(pArray, new IntPtr(structSize));
ret = GetAdaptersInfo(pArray, ref structSize);
} // if
if (ret == 0)
{
// Call Succeeded
IntPtr pEntry = pArray;
do
{
// Retrieve the adapter info from the memory address
IP_ADAPTER_INFO entry = (IP_ADAPTER_INFO)Marshal.PtrToStructure(pEntry, typeof(IP_ADAPTER_INFO));
// ***Do something with the data HERE!***
Console.WriteLine("\n");
Console.WriteLine("Index: {0}", entry.Index.ToString());
// Adapter Type
string tmpString = string.Empty;
switch (entry.Type)
{
case MIB_IF_TYPE_ETHERNET: tmpString = "Ethernet"; break;
case MIB_IF_TYPE_TOKENRING: tmpString = "Token Ring"; break;
case MIB_IF_TYPE_FDDI: tmpString = "FDDI"; break;
case MIB_IF_TYPE_PPP: tmpString = "PPP"; break;
case MIB_IF_TYPE_LOOPBACK: tmpString = "Loopback"; break;
case MIB_IF_TYPE_SLIP: tmpString = "Slip"; break;
default: tmpString = "Other/Unknown"; break;
} // switch
Console.WriteLine("Adapter Type: {0}", tmpString);
Console.WriteLine("Name: {0}", entry.AdapterName);
Console.WriteLine("Desc: {0}\n", entry.AdapterDescription);
Console.WriteLine("DHCP Enabled: {0}", (entry.DhcpEnabled == 1) ? "Yes" : "No");
if (entry.DhcpEnabled == 1)
{
Console.WriteLine("DHCP Server : {0}", entry.DhcpServer.IpAddress.Address);
// Lease Obtained (convert from "time_t" to C# DateTime)
DateTime pdatDate = new DateTime(1970, 1, 1).AddSeconds(entry.LeaseObtained).ToLocalTime();
Console.WriteLine("Lease Obtained: {0}", pdatDate.ToString());
// Lease Expires (convert from "time_t" to C# DateTime)
pdatDate = new DateTime(1970, 1, 1).AddSeconds(entry.LeaseExpires).ToLocalTime();
Console.WriteLine("Lease Expires : {0}\n", pdatDate.ToString());
} // if DhcpEnabled
Console.WriteLine("IP Address : {0}", entry.IpAddressList.IpAddress.Address);
Console.WriteLine("Subnet Mask : {0}", entry.IpAddressList.IpMask.Address);
Console.WriteLine("Default Gateway: {0}", entry.GatewayList.IpAddress.Address);
// MAC Address (data is in a byte[])
tmpString = string.Empty;
for (int i = 0; i < entry.AddressLength - 1; i++)
{
tmpString += string.Format("{0:X2}-", entry.Address[i]);
}
Console.WriteLine("MAC Address : {0}{1:X2}\n", tmpString, entry.Address[entry.AddressLength - 1]);
Console.WriteLine("Has WINS: {0}", entry.HaveWins ? "Yes" : "No");
if (entry.HaveWins)
{
Console.WriteLine("Primary WINS Server : {0}", entry.PrimaryWinsServer.IpAddress.Address);
Console.WriteLine("Secondary WINS Server: {0}", entry.SecondaryWinsServer.IpAddress.Address);
} // HaveWins
// Get next adapter (if any)
pEntry = entry.Next;
}
while (pEntry != IntPtr.Zero);
Marshal.FreeHGlobal(pArray);
} // if
else
{
Marshal.FreeHGlobal(pArray);
throw new InvalidOperationException("GetAdaptersInfo failed: " + ret);
}
} // GetAdapters透過呼叫 GetAdaptersInfo 可以取得類似以下的訊息：Index: 4
Adapter Type: Ethernet
Name: {03BE6037-AC37-4ABC-A51E-64D292605AF7}
Desc: Bluetooth PAN Network Adapter - Packet Scheduler Miniport
DHCP Enabled: Yes
DHCP Server : 255.255.255.255
Lease Obtained: 2010/7/21 下午 03:41:03
Lease Expires : 2038/1/19 上午 11:14:07
IP Address : 0.0.0.0
Subnet Mask : 0.0.0.0
Default Gateway:
MAC Address : 00-03-0D-00-00-01
Has WINS: No
Index: 3
Adapter Type: Ethernet
Name: {0E578C80-3C51-45A5-BDAC-090433256DC9}
Desc: Intel(R) WiFi Link 1000 BGN - Packet Scheduler Miniport
DHCP Enabled: No
IP Address : 0.0.0.0
Subnet Mask : 0.0.0.0
Default Gateway:
MAC Address : 00-1E-64-49-6D-44
Has WINS: No
Index: 2
Adapter Type: Ethernet
Name: {A90E7976-4D80-4CEF-BF21-66F97CA53772}
Desc: Atheros AR8132 PCI-E Fast Ethernet Controller - Packet Scheduler Miniport
DHCP Enabled: Yes
DHCP Server : 255.255.255.255
Lease Obtained: 2010/7/21 下午 04:40:11
Lease Expires : 2038/1/19 上午 11:14:07
IP Address : 169.254.85.175
Subnet Mask : 255.255.0.0
Default Gateway:
MAC Address : 90-E6-BA-7A-B3-22
Has WINS: No
Index: 524294
Adapter Type: PPP
Name: {35B892C3-443E-4D64-90D8-580EF677098F}
Desc: WAN (PPP/SLIP) Interface
DHCP Enabled: No
IP Address : 114.37.247.52
Subnet Mask : 255.255.255.255
Default Gateway: 114.37.247.5
MAC Address : 00-53-45-00-00-00
Has WINS: No
