在c＃中手动设置连接到pc热点的设备的IP地址 [英] Set a IP Address of devices connected to pc hotspot manually in c#

问题描述

嘿



如何在c＃


$ b中手动设置连接到PC热点的设备的IP地址$ b我试图在谷歌找到它但发现这一个



它会自动获取IP





这里是代码

 使用系统; 
 使用 System.Collections.Generic; 
 使用 System.Diagnostics; 
 使用 System.Linq; 
 使用 System.Net; 
 
 命名空间 Hotspot.Api 
 {
  ///   <   summary  >  
   ///  此类允许您检索当您只知道其MAC地址时，本地网络上特定计算机的IP地址和主机名。 
   ///   <   / summary  >  
   public   class  IPInfo 
 {
  public  IPInfo（ string  macAddress， string  ipAddress）
 {
  this  .MacAddress = macAddress; 
  this  .IPAddress = ipAddress; 
} 
 
  public   string  MacAddress {获得;  private   set ; } 
  public   string  IPAddress { get ;  private   set ; } 
  private   string  hostName =  null ; 
  public   string  HostName 
 {
  get  
 {
  if （hostName ==  null ）
 {
  if （ this  .IPAddress！=  null ）
 尝试 
 {
 hostName = Dns.GetHostEntry（此 .IPAddress）.HostName; 
} 
  catch （例外）
 {
} 
} 
  return  hostName; 
} 
} 
 
   #region静态方法
  
  ///   <  摘要 >  
   ///  < span class =code-comment>使用指定的MAC地址检索本地网络上的计算机的IPInfo。 
   ///   <   / summary  >  
   ///   <   param  < span class =code-summarycomment>   name =macAddress >  MAC要检索的IPInfo的地址。<   / param  > ;  
   ///    <  返回 >  < < /跨度>  / returns  >  
   public   static  IPInfo GetIPInfo（ string  macAddress）
 {
  var  ipinfo =（ from  ip  in  IPInfo.GetIPInfo （）
 其中 ip.MacAddress.ToLowerInvariant（）== macAddress.ToLowerInvariant（）
 选择 ip）.FirstOrDefault（）; 
 
  return  ipinfo; 
} 
 
  ///    <  摘要 >  
   ///  检索本地网络上所有计算机的IPInfo。 
   ///   <   / summary  >  
   ///   <  返回 < span class =code-summarycomment>>  <   / returns  >  
   public   static 列表< IPInfo> GetIPInfo（）
 {
 尝试 
 {
  var  list =  new  List< IPInfo>（）; 
 
  var  splitted = textbox1.text（）。分割（ new   char  [] {'  \ n'， '  \ r'}）; 
  foreach （ var  arp  in  splitted）
 {
  //  解析所有MAC / IP地址组合 
  if （！string.IsNullOrEmpty（arp））
 {
  var  pieces =（ from  piece  in  arp.Split（ new   char  [] {' ' ，'  \t'}）
  where ！string.IsNullOrEmpty（piece）
  select  piece）.ToArray（）; 
  if （pieces.Length ==  3 ）
 {
 list.Add（ new  IPInfo（件[ 1 ]，件[ 0 ]））; 
} 
} 
} 
 
  //  返回包含MAC / IP地址组合的IPInfo对象列表 
  return 列表; 
} 
  catch （例外情况）
 {
  throw   new 异常（  IPInfo：Error Parsing'arp -a'结果'，ex）; 
} 
} 
 
  ///   <  摘要 >  
   ///  这将在Windows中运行arp实用程序以检索所有MAC / IP地址条目。 
   ///   <   / summary  >  
   ///   <  返回 < span class =code-summarycomment>>  <   / returns  >  
   private   static   string  GetARPResult（）
 {
流程p =  null ; 
  string  output =  string  .Empty; 
 
 尝试 
 {
p = Process.Start（ new  ProcessStartInfo（  arp，   - ）
 {
 CreateNoWindow =  true ，
 UseShellExecute =  false ，
 RedirectStandardOutput =  true  
}）; 
 
 output = p.StandardOutput.ReadToEnd（）; 
 
 p.Close（）; 
} 
  catch （例外情况）
 {
  throw   new 异常（  IPInfo：错误检索'arp -a'结果'，ex）; 
} 
 最后 
 {
 如果（p ！=  null ）
 {
 p.Close（）; 
} 
} 
 
  return 输出; 
} 
 
   #endregion 
 } 
} 

所以这是代码

它会自动解析主机名ip地址也是。

但是我需要它自动解析主机名，但手动输入ip地址为ex =



Textbox1.text = 192.168。 21.4





请帮助

解决方案

为了设置IP要使用系统中任何设备的地址，您需要成为网段的DHCP主机 - 其中包括示例中192.168.21.xxx区域的所有设备。如果不是，那么两个设备很容易被赋予相同的IP地址，这将导致很多问题。而且这个角色通常是给路由器或类似的设备，而不是特定的PC（虽然它可以）。

所以首先看看你的本地网络，并确定DHCP服务器 - 你会必须与它沟通才能做到这一点。



我希望你有充分的理由这样做，而且听起来好像没有很多奖励！

Hey

How can i set a ip address of devices connected to pc hotspot manually in c#

I tried to find it on google but found this one

It gets ip but automatically


here is the code

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;

namespace Hotspot.Api
{
	/// <summary>
	/// This class allows you to retrieve the IP Address and Host Name for a specific machine on the local network when you only know it's MAC Address.
	/// </summary>
	public class IPInfo
	{
		public IPInfo(string macAddress, string ipAddress)
		{
			this.MacAddress = macAddress;
			this.IPAddress = ipAddress;
		}

		public string MacAddress { get; private set; }
		public string IPAddress { get; private set; }
		private string hostName = null;
		public string HostName
		{
			get
			{
				if (hostName == null)
				{
					if (this.IPAddress != null)
						try
						{
							hostName = Dns.GetHostEntry(this.IPAddress).HostName;
						}
						catch (Exception)
						{
						}
				}
				return hostName;
			}
		}

		#region "Static Methods"

		/// <summary>
		/// Retrieves the IPInfo for the machine on the local network with the specified MAC Address.
		/// </summary>
		/// <param name="macAddress">The MAC Address of the IPInfo to retrieve.</param>
		/// <returns></returns>
		public static IPInfo GetIPInfo(string macAddress)
		{
			var ipinfo = (from ip in IPInfo.GetIPInfo()
						  where ip.MacAddress.ToLowerInvariant() == macAddress.ToLowerInvariant()
						  select ip).FirstOrDefault();

			return ipinfo;
		}

		/// <summary>
		/// Retrieves the IPInfo for All machines on the local network.
		/// </summary>
		/// <returns></returns>
		public static List<IPInfo> GetIPInfo()
		{
			try
			{
				var list = new List<IPInfo>();

				var splitted = textbox1.text().Split(new char[] { '\n', '\r' });
				foreach (var arp in splitted)
				{
					// Parse out all the MAC / IP Address combinations
					if (!string.IsNullOrEmpty(arp))
					{
						var pieces = (from piece in arp.Split(new char[] { ' ', '\t' })
									  where !string.IsNullOrEmpty(piece)
									  select piece).ToArray();
						if (pieces.Length == 3)
						{
							list.Add(new IPInfo(pieces[1], pieces[0]));
						}
					}
				}

				// Return list of IPInfo objects containing MAC / IP Address combinations
				return list;
			}
			catch (Exception ex)
			{
				throw new Exception("IPInfo: Error Parsing 'arp -a' results", ex);
			}
		}

		/// <summary>
		/// This runs the "arp" utility in Windows to retrieve all the MAC / IP Address entries.
		/// </summary>
		/// <returns></returns>
		private static string GetARPResult()
		{
			Process p = null;
			string output = string.Empty;

			try
			{
				p = Process.Start(new ProcessStartInfo("arp", "-a")
				{
					CreateNoWindow = true,
					UseShellExecute = false,
					RedirectStandardOutput = true
				});

				output = p.StandardOutput.ReadToEnd();

				p.Close();
			}
			catch (Exception ex)
			{
				throw new Exception("IPInfo: Error Retrieving 'arp -a' Results", ex);
			}
			finally
			{
				if (p != null)
				{
					p.Close();
				}
			}

			return output;
		}

		#endregion
	}
}

So it is the code
it resolves hostname automatically and ip address too.
But i need it resolves hostname automatically but ip address manually given in for ex=

Textbox1.text= 192.168.21.4


pls help

解决方案

In order to set the IP address of any device in your system, you need to be the DHCP host for the network segment - which includes all devices on the 192.168.21.xxx area in your example. If it wasn't, then two devices could easily be given the same IP address and that would cause a lot of problems. And that role is normally given to a router or similar equipment, rather than a specific PC (although it can be).
So start by looking at your local network, and identify the DHCP server - you will have to communicate with it to do this.

I hope you have a good reason for this, and it sounds like a lot of work for not a lot of reward!

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