c＃网络适配器列表

我有代码，它使用System.Net和System.Net.NetworkInformation引用，它生成一个我的网络连接名称列表。

一切似乎都很好并且正常工作，但是当我创建一个这样的代码，并将导出的值导出到listbox1项目添加时，我只有一个网络连接名称，但实际上我有四个。

我怎么解决这个问题？

 private void button1_Click(object sender, EventArgs e) { Adapters obj = new Adapters(); var value = obj.net_adapters(); listBox1.Items.Add(value); } public class Adapters { public string net_adapters() { string value = string.Empty; foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) { value = nic.Name; } return value; } } 

Answer 1

我会修改你目前的代码：

 public string net_adapters() { string value = string.Empty; foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) { // bug in your original code right here is `=` // you proably meant to do something like value += ", " + nic.Name // which would not work well with listbox Items collection value = nic.Name; } return value; } 

是这样的：

 public System.Collections.Generic.List net_adapters() { List values = new List(); foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) { values.Add(nic.Name); } return values; } 

一种更奇特的方式（虽然它可能无关紧要，因为GetAllNetworkIntefaces可能阻塞，直到它有一个完整列表）将使用IEnumerable并yield return ：

 public IEnumerable net_adapters() { foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) { yield return nic.Name; } yield break; } 

不管怎样，你会像这样使用它：

 var obj = new Adapters(); var values = obj.net_adapters(); listBox1.ItemsSource = values; 

（另外，我建议您使用.NET Framework命名指南 ）

Answer 2

你只返回最后一项value = nic.Name; 您应该使用数组或列表来返回所有项目

 public List net_adapters() { List values = new List(); foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces()) { values.Add(nic.Name); } return values; } 

Answer 3

复制和粘贴https://msdn.microsoft.com/en-us/library/system.net.networkinformation.networkinterface(v=vs.110).aspx

 public static void ShowNetworkInterfaces() { IPGlobalProperties computerProperties = IPGlobalProperties.GetIPGlobalProperties(); NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces(); Console.WriteLine("Interface information for {0}.{1} ", computerProperties.HostName, computerProperties.DomainName); if (nics == null || nics.Length < 1) { Console.WriteLine(" No network interfaces found."); return; } Console.WriteLine(" Number of interfaces .................... : {0}", nics.Length); foreach (NetworkInterface adapter in nics) { IPInterfaceProperties properties = adapter.GetIPProperties(); Console.WriteLine(); Console.WriteLine(adapter.Description); Console.WriteLine(String.Empty.PadLeft(adapter.Description.Length,'=')); Console.WriteLine(" Interface type .......................... : {0}", adapter.NetworkInterfaceType); Console.WriteLine(" Physical Address ........................ : {0}", adapter.GetPhysicalAddress().ToString()); Console.WriteLine(" Operational status ...................... : {0}", adapter.OperationalStatus); string versions =""; // Create a display string for the supported IP versions. if (adapter.Supports(NetworkInterfaceComponent.IPv4)) { versions = "IPv4"; } if (adapter.Supports(NetworkInterfaceComponent.IPv6)) { if (versions.Length > 0) { versions += " "; } versions += "IPv6"; } Console.WriteLine(" IP version .............................. : {0}", versions); ShowIPAddresses(properties); // The following information is not useful for loopback adapters. if (adapter.NetworkInterfaceType == NetworkInterfaceType.Loopback) { continue; } Console.WriteLine(" DNS suffix .............................. : {0}", properties.DnsSuffix); string label; if (adapter.Supports(NetworkInterfaceComponent.IPv4)) { IPv4InterfaceProperties ipv4 = properties.GetIPv4Properties(); Console.WriteLine(" MTU...................................... : {0}", ipv4.Mtu); if (ipv4.UsesWins) { IPAddressCollection winsServers = properties.WinsServersAddresses; if (winsServers.Count > 0) { label = " WINS Servers ............................ :"; ShowIPAddresses(label, winsServers); } } } Console.WriteLine(" DNS enabled ............................. : {0}", properties.IsDnsEnabled); Console.WriteLine(" Dynamically configured DNS .............. : {0}", properties.IsDynamicDnsEnabled); Console.WriteLine(" Receive Only ............................ : {0}", adapter.IsReceiveOnly); Console.WriteLine(" Multicast ............................... : {0}", adapter.SupportsMulticast); ShowInterfaceStatistics(adapter); Console.WriteLine(); }