c# 如何对网络信息进行相关设置(ip,dns,网关等)

     网络的相关设置在项目开发中有较多的应用，有时候需要在项目中对网络信息进行相关设置。

     现在提供提供几种相关的辅助方法类。

(1).ip地址

  /// <summary>
  /// ip地址
  /// </summary>
  public string ipaddress
  {
   get
   {
    string ipaddress;
    var address = getaddress();
    if (address == null)
    {
     ipaddress = string.empty;
    }
    else
    {
     ipaddress = address.address.tostring();
    }
    return ipaddress;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(2).网关地址

  /// <summary>
  /// 网关地址
  /// </summary>
  public string getway
  {
   get
   {    
    string getway;
    if (getwaryes != null && getwaryes.count > 0)
    {

     getway = getwaryes[0].address.tostring() == "0.0.0.0" ? "" : getwaryes[0].address.tostring(); 
    }
    else
    {
     getway =string.empty;
    }
    return getway;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(3). dhcp服务器地址

  /// <summary>
  /// dhcp服务器地址
  /// </summary>
  public string dhcpserver
  {
   get
   {
    string dhcpserver;
    if (dhcpserveraddresses != null && dhcpserveraddresses.count > 0)
    {
     dhcpserver = dhcpserveraddresses[0].tostring();
    }
    else
    {
     dhcpserver = string.empty;
    }
    return dhcpserver;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(4).mac地址

  /// <summary>
  /// mac地址
  /// </summary>
  public string macaddres
  {
   get
   {
    string macaddress;
    if (macaddress == null)
     macaddress = string.empty;
    else if (macaddress.tostring().length == 12)
    {
     macaddress = macaddress.tostring().insert(4, "-").insert(9, "-");
    }
    else
    {
     macaddress = macaddress.tostring();
    }
    return macaddress;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(5). 主dns地址

  /// <summary>
  /// 主dns地址
  /// </summary>
  public string dnsmain
  {
   get
   {
    var dnsmain =string.empty;

    if (dnsaddresses.count > 0)
    {
     if (isipaddress(dnsaddresses[0].tostring()))
     {
      dnsmain = dnsaddresses[0].tostring();
     }
    }
    else
    {
     dnsmain =string.empty;
    }
    return dnsmain;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(6).备用dns地址

  /// <summary>
  /// 备用dns地址
  /// </summary>
  public string dnsbackup
  {
   get
   {
    var dnsbackup = string.empty;
    if (dnsaddresses.count > 1)
    {
     if (isipaddress(dnsaddresses[1].tostring()))
     {
      dnsbackup = dnsaddresses[1].tostring();
     }

    }
    else
    {
     dnsbackup = string.empty;
    }
    return dnsbackup;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(7).子网掩码

  /// <summary>
  /// 子网掩码
  /// </summary>
  public string mask
  {
   get
   {
    string mask;
    var address = getaddress();
    if (address == null)
    {
     mask = "";
    }
    else
    {
     if (address.ipv4mask != null) 
     {
      mask = address.ipv4mask.tostring();
     }
     else
     {
      mask = "255.255.255.0";
     }
     
    }
    return mask;
   }
   set { if (value == null) throw new argumentnullexception(nameof(value)); }
  }

(8).属性

  /// <summary>
  /// dns集合
  /// </summary>
  public ipaddresscollection dnsaddresses { get; set; }
  /// <summary>
  /// 网关地址集合
  /// </summary>
  public gatewayipaddressinformationcollection getwaryes { get; set; }

  /// <summary>
  /// ip地址集合
  /// </summary>
  public unicastipaddressinformationcollection ipaddresses { get; set; }

  /// <summary>
  /// dhcp地址集合
  /// </summary>
  public ipaddresscollection dhcpserveraddresses { get; set; }

  /// <summary>
  /// 网卡mac地址
  /// </summary>
  public physicaladdress macaddress { get; set; }

  /// <summary>
  /// 是否启用dhcp服务
  /// </summary>
  public bool isdhcpenabled { get; set; }

  /// <summary>
  /// 描述信息
  /// </summary>
  public string description { get; set; }
  /// <summary>
  /// 网络接口类型
  /// </summary>
  /// <returns></returns>
  public string networkinterfacetype { get; set; }

  /// <summary>
  /// 速度
  /// </summary>
  public string speed { get; set; } 

(9).是否是ip地址

  /// <summary>
  /// 是否是ip地址
  /// </summary>
  /// <param name="ipaddress"></param>
  /// <returns></returns>
  public bool isipaddress(string ipaddress)
  {
   const string regexstr = @"^(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1]{1}[0-9]{2}|[1-9]{1}[0-9]{1}|[0-9])$";
   var regex = system.text.regularexpressions.regex.match(ipaddress, regexstr);
   return regex.success;
  }

(10).启用dhcp服务

  /// <summary>
  /// 启用dhcp服务
  /// </summary>
  public bool enabledhcp()
  {
   var wmi = new managementclass("win32_networkadapterconfiguration");
   var moc = wmi.getinstances();
   foreach (var o in moc)
   {
    var mo = (managementobject) o;
    if (!(bool)mo["ipenabled"])
     continue;
    if (mo["settingid"].tostring() != networkinterfaceid) continue;
    mo.invokemethod("setdnsserversearchorder", null);
    mo.invokemethod("enabledhcp", null);
   }
   //查询现适配器接口信息
   var networkadapter = new networkadapterutil().getneworkadapterbynetworkinterfaceid(networkinterfaceid); 
   return networkadapter != null && networkadapter.isdhcpenabled;
  }

(11).设置ip地址,子网掩码，网关,dns

  /// <summary>
  /// 设置ip地址,子网掩码，网关,dns,
  /// </summary>
  public bool setipaddresssubmaskdnsgetway(string ipaddress, string submask, string getway, string dnsmain, string dnsbackup)
  {
   string[] dnsarray;
   if (string.isnullorempty(dnsbackup))
   {
    dnsarray = new[] { dnsmain };
   }
   else
   {
    dnsarray = new[] { dnsmain, dnsbackup };
   }
   return setipaddress(new[] { ipaddress }, new[] { submask }, new[] { getway }, dnsarray);

  }

  /// <summary>
  /// 设置ip地址和子网掩码
  /// </summary>
  public bool setipaddressandsubmask(string ipaddress, string submask)
  {
   return setipaddress(new[] { ipaddress }, new[] { submask }, null, null);

  }


  /// <summary>
  /// 设置ip网关
  /// </summary>
  public bool setgetwayaddress(string getway)
  {
   return setipaddress(null, null, new[] { getway }, null);

  }

(12).设置主,备份dns地址

  /// <summary>
  /// 设置主,备份dns地址
  /// </summary>
  public bool setdnsaddress(string dnsmain, string dnsbackup)
  {
   string[] dnsarray;
   if (string.isnullorempty(dnsbackup))
   {
    dnsarray = new[] { dnsmain };
   }
   else
   {
    dnsarray = new[] { dnsmain, dnsbackup };
   }
   return setipaddress(null, null, null, dnsarray);

  }

(13).得到ipv4地址

  /// <summary>
  /// 得到ipv4地址
  /// </summary>
  /// <returns></returns>
  private unicastipaddressinformation getaddress()
  {
   if (ipaddresses == null || ipaddresses.count <= 0) return null;
   switch (ipaddresses.count)
   {
    case 3:
     return ipaddresses[2];
    case 2:
     return ipaddresses[1];
   }
   return ipaddresses[0];
  }

(14).检查设置ip地址,如果返回空，表示检查通过，为了方便返回就字符串了

  /// <summary>
  /// 检查设置ip地址,如果返回空，表示检查通过，为了方便返回就字符串了，没用枚举了
  /// </summary>
  /// <param name="ipaddress"></param>
  /// <param name="submask"></param>
  /// <param name="getway"></param>
  /// <param name="dnsmain"></param>
  /// <param name="dnsbackup"></param>
  /// <returns></returns>
  public string isipaddress(string ipaddress, string submask, string getway, string dnsmain, string dnsbackup)
  {
   if (!string.isnullorempty(ipaddress))
   {
    if (!isipaddress(ipaddress)) return "ip地址格式不对";
   }
   if (!string.isnullorempty(submask))
   {
    if (!isipaddress(submask)) return "子网掩码格式不对";
   }
   if (!string.isnullorempty(getway))
   {
    if (!isipaddress(getway)) return "网关地址格式不对";
   }
   if (!string.isnullorempty(dnsmain))
   {
    if (!isipaddress(dnsmain)) return "主dns地址格式不对";
   }
   if (string.isnullorempty(dnsbackup)) return "";
   return !isipaddress(dnsbackup) ? "备用dns地址格式不对" : "";
  }

(15).设置ip地址

  /// <summary>
  /// 设置ip地址
  /// </summary>
  /// <param name="ip"></param>
  /// <param name="submask"></param>
  /// <param name="getway"></param>
  /// <param name="dns"></param>
  private bool setipaddress(ienumerable ip, ienumerable submask, ienumerable getway, ienumerable dns)
  {
   var wmi = new managementclass("win32_networkadapterconfiguration");
   var moc = wmi.getinstances();
   foreach (var o in moc)
   {
    var mo = (managementobject) o;
    if (!(bool)mo["ipenabled"])
     continue;
    if (networkinterfaceid != mo["settingid"].tostring()) continue;
    managementbaseobject inpar;
    managementbaseobject outpar;
    string str = null;
    if (ip != null && submask != null)
    {
     inpar = mo.getmethodparameters("enablestatic");
     inpar["ipaddress"] = ip;
     inpar["subnetmask"] = submask;
     outpar = mo.invokemethod("enablestatic", inpar, null);
     if (outpar != null) str = outpar["returnvalue"].tostring();
     return (str=="0"||str=="1");
     //获取操作设置ip的返回值， 可根据返回值去确认ip是否设置成功。 0或1表示成功
    }
    if(getway!=null)
    {
     inpar = mo.getmethodparameters("setgateways");
     inpar["defaultipgateway"] = getway;
     outpar = mo.invokemethod("setgateways", inpar, null);
     if (outpar != null) str = outpar["returnvalue"].tostring();
     return (str == "0" || str == "1");
    }
    if (dns == null) continue;
    inpar = mo.getmethodparameters("setdnsserversearchorder");
    inpar["dnsserversearchorder"] = dns;
    outpar = mo.invokemethod("setdnsserversearchorder", inpar, null);
    if (outpar != null) str = outpar["returnvalue"].tostring();
    return (str == "0" || str == "1");
   }
   return false;
  } 

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