使用c#更改windows中的DNS
使用c#更改windows中的DNS
提问于 2018-06-09 05:31:44
很抱歉弄得一团糟，我几天前就开始了，我还在努力学习。我的代码：
private void button1_Click(object sender, EventArgs e)
{
ManagementScope oMs = new ManagementScope();
ObjectQuery oQuery =
new ObjectQuery("Select * From Win32_NetworkAdapter");
ManagementObjectSearcher oSearcher = new ManagementObjectSearcher(oMs, oQuery);
ManagementObjectCollection oReturnCollection = oSearcher.Get();
foreach (ManagementObject oReturn in oReturnCollection)
{
if (oReturn.Properties["NetConnectionID"].Value != null)
{
// I want the result from this pasted into the "Network Adapter" prompt
Console.WriteLine(oReturn.Properties["NetConnectionID"].Value);
// This is probably 100% wrong, sorry.
String NetworkAdapter = Console.WriteLine(oReturn.Properties["NetConnectionID"].Value);
Process process = new Process();
process.StartInfo.FileName = "cmd.exe";
process.StartInfo.CreateNoWindow = true;
process.StartInfo.RedirectStandardInput = true;
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.UseShellExecute = false;
process.Start();
// I want to insert the Name of a network adapter into this command prompt, but I can't seem to manage it.
process.StandardInput.WriteLine("netsh interface ipv4 set dns "NetworkAdapter" static 8.8.8.8");
process.StandardInput.WriteLine("netsh interface ipv4 add dns "NetworkAdapter" 8.8.4.4 index=2");
process.StandardInput.Flush();
process.StandardInput.Close();
process.WaitForExit();
Console.WriteLine(process.StandardOutput.ReadToEnd());
Console.Read();
}
}
}这个想法是，当我按下按钮时，它将检测到我的活动网络适配器名称，并通过cmd.exe提示将其粘贴到标准的dns更改中。我开始觉得我让自己变得更难了。
谢谢你的帮助。
回答 1
Stack Overflow用户
回答已采纳
发布于 2018-06-09 06:05:41
更改dns的简短版本：
首先获取网络适配器：
public static NetworkInterface GetActiveEthernetOrWifiNetworkInterface()
{
var Nic = NetworkInterface.GetAllNetworkInterfaces().FirstOrDefault(
a => a.OperationalStatus == OperationalStatus.Up &&
(a.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 || a.NetworkInterfaceType == NetworkInterfaceType.Ethernet) &&
a.GetIPProperties().GatewayAddresses.Any(g => g.Address.AddressFamily.ToString() == "InterNetwork"));
return Nic;
}然后设置DNS：
public static void SetDNS(string DnsString)
{
string[] Dns = { DnsString };
var CurrentInterface = GetActiveEthernetOrWifiNetworkInterface();
if (CurrentInterface == null) return;
ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMC.GetInstances();
foreach (ManagementObject objMO in objMOC)
{
if ((bool)objMO["IPEnabled"])
{
if (objMO["Caption"].ToString().Contains(CurrentInterface.Description))
{
ManagementBaseObject objdns = objMO.GetMethodParameters("SetDNSServerSearchOrder");
if (objdns != null)
{
objdns["DNSServerSearchOrder"] = Dns;
objMO.InvokeMethod("SetDNSServerSearchOrder", objdns, null);
}
}
}
}
}然后使用如下方法：
SetDNS("127.0.0.1");要取消设置dns使用，请执行以下操作：
public static void UnsetDNS()
{
var CurrentInterface = GetActiveEthernetOrWifiNetworkInterface();
if (CurrentInterface == null) return;
ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMC.GetInstances();
foreach (ManagementObject objMO in objMOC)
{
if ((bool)objMO["IPEnabled"])
{
if (objMO["Caption"].ToString().Contains(CurrentInterface.Description))
{
ManagementBaseObject objdns = objMO.GetMethodParameters("SetDNSServerSearchOrder");
if (objdns != null)
{
objdns["DNSServerSearchOrder"] = null;
objMO.InvokeMethod("SetDNSServerSearchOrder", objdns, null);
}
}
}
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50768640
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