获取通过局域网连接的所有电脑的ipp地址 [英] get ipp address of all pcs connected via lan

问题描述

大家好！

我是Haseeb，

我想在通过LAN连接的列表框中显示所有PC的IP地址.

我有一段代码，但是无法在我的计算机实验室中显示连接到LAN的PC的IP地址

Hello everyone!

I''m Haseeb,

I want to display the IPAddress of all the PC''s in a listbox that are connected via LAN.

I have a piece of code but it couldn''t display the IPAddress of PC''s connected to LAN in my computer lab

hostname = Dns.GetHostName();
            IPHostEntry IPentry = Dns.GetHostEntry(hostname);
            IPAddress[] addr = IPentry.AddressList;
            string addres = addr[0].ToString();
            foreach (IPAddress myip in IPentry.AddressList)
            {
                listBox1.Items.Add(myip.ToString());
            }
            listBox1.Items.Remove(addres);

请帮助我获取IPAddresses
我将非常感谢您.

Please help me in getting the IPAddresses
I''ll be highly thankful to you.

推荐答案

我记得使用Windows API方法，获取可以解析为IP地址的主机名.但这仅适用于我认为域中的计算机.
在这里

I remeber using windows API method , getting host names which you can resolve to IP addresses. but that will only work for computers in domain I think.
here it is

[DllImport("Netapi32.dll")]
private static extern int NetServerEnum(
    IntPtr     servername,
    uint       level,
    out IntPtr bufptr,
    int        prefmaxlen,
    out int    entriesread,
    out int    totalentries,
    uint       servertype,
    IntPtr     domain,
    IntPtr     resume_handle);

以及使用它的这段代码

and this code using it

public static string[] EnumComputers()
        {
            IntPtr pInfo;

            int entriesRead = 0;
            int totalEntries = 0;

            int result = NetServerEnum(
                IntPtr.Zero,
                LEVEL_SERVER_INFO_100,
                out pInfo,
                MAX_PREFERRED_LENGTH,
                out entriesRead,
                out totalEntries,
                SV_TYPE_WORKSTATION | SV_TYPE_SERVER,
                IntPtr.Zero,
                IntPtr.Zero);

            if (result != 0)
            {
                throw new ApplicationException("NetApi Error = " + String.Format("0x{0,0:X}", result));
            }

            string[] computers = new string[entriesRead];

            IntPtr pos = pInfo;

            for (int ii = 0; ii < entriesRead; ii++)
            {
                SERVER_INFO_100 info = (SERVER_INFO_100)Marshal.PtrToStructure(pos, typeof(SERVER_INFO_100));

                computers[ii] = info.sv100_name;

                pos = (IntPtr)(pos.ToInt32() + Marshal.SizeOf(typeof(SERVER_INFO_100)));
            }

            NetApiBufferFree(pInfo);

            return computers;
        }

尝试看看IPGlobalProperties类和GetActiveTcpConnections

IPGlobalProperties

这为您提供了与您自己的计算机的所有活动Tcp连接的概述.

Try look at IPGlobalProperties class and GetActiveTcpConnections

IPGlobalProperties

This gives you a overview of all active Tcp connection to your own computer.

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