如何通过C#中的标签显示多个I

Question

一般来说，我对编程很陌生，所以答案可能很简单。我试着把来自每个网卡的所有IP显示到一个标签中。我可以在控制台中运行相同的代码，并使其正确地串出。我可以将它添加到一个列表框中，并正确地显示它，但我不知道如何将多个IP添加到标签中。希望这是合理的。我在互联网上找到了这段代码的大部分，并试图了解这些代码是如何一起工作的，所以如果你看到一些可能没有意义的注释行，你就知道为什么了。正在讨论的标签是8.文本

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Net.NetworkInformation;
using System.Net;
using System.Net.Sockets;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            //first we should create an array of the network interfaces
            NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();

            //now lets iterate through the list of nics and call them adapter
            foreach (NetworkInterface adapter in nics)
            {
                //add the adapter description to the listbox1 items
                listBox1.Items.Add(adapter.Description);
            }
        }

        public void listBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //Lets make our form taller so that the labels can be seen.
            Form1.ActiveForm.Height = 320;

            //Get the currently chosen listBox item.
            string nicname = listBox1.Text;

            //Again build an array of all the Network Interfaces.
            NetworkInterface[] nics = NetworkInterface.GetAllNetworkInterfaces();

            //Lets loop through those interfaces
            foreach (NetworkInterface adapter in nics)
            {
                //Lets condition on the adapter description making sure it equals the nicname of the chosen adapter in the listbox1
                if (nicname == adapter.Description)
                {
                    //Lets update all the labels to display more information about the chosen adapter.
                    label1.Text = adapter.Description;
                    label2.Text = "Name: " + adapter.Name;
                    label3.Text = "Type: " + adapter.NetworkInterfaceType;
                    label4.Text = "Status: " + adapter.OperationalStatus;
                    label5.Text = "Speed: " + adapter.Speed;
                    label6.Text = "Multicast Support? " + adapter.SupportsMulticast;
                    label7.Text = "MAC: " + adapter.GetPhysicalAddress();

                    //NetworkInterface[] prop = NetworkInterface.GetAllNetworkInterfaces();
                    IPInterfaceProperties properties = adapter.GetIPProperties();

                    foreach (IPAddressInformation uniCast in properties.UnicastAddresses)
                    {
                        label8.Text = "IP: " + (uniCast.Address); 
                        //label11.Text = "IP: " +  uniCast.Address; 
                        //listBox2.Items.Add(uniCast.Address);
                        foreach (UnicastIPAddressInformation uipi in adapter.GetIPProperties().UnicastAddresses)
                        label10.Text = "Subnet: " + uipi.IPv4Mask;
                    }
                    foreach (GatewayIPAddressInformation GateWay in properties.GatewayAddresses)
                    {
                        label9.Text = "Gateway: " + GateWay.Address;
                    }
                }
            }
        }
    }
}

Answer 1

每次您在这里重置标签时：

label8.Text = "IP: " + (uniCast.Address);

您可以将其更改为：

label8.Text += (uniCast.Address);

或

label8.Text = label8.Text + (uniCast.Address); 

那你只需要说：

label8.Text = "IP: ";

在循环前将IP前缀放在上面。

懒惰版本：

if (nicname == adapter.Description)
{
    //Lets update all the labels to display more information about the chosen adapter.
    label1.Text = adapter.Description;
    label2.Text = "Name: " + adapter.Name;
    label3.Text = "Type: " + adapter.NetworkInterfaceType;
    label4.Text = "Status: " + adapter.OperationalStatus;
    label5.Text = "Speed: " + adapter.Speed;
    label6.Text = "Multicast Support? " + adapter.SupportsMulticast;
    label7.Text = "MAC: " + adapter.GetPhysicalAddress();
    label8.Text = "IP: ";

    //NetworkInterface[] prop = NetworkInterface.GetAllNetworkInterfaces();
    IPInterfaceProperties properties = adapter.GetIPProperties();

    foreach (IPAddressInformation uniCast in properties.UnicastAddresses)
    {
        label8.Text += (uniCast.Address); 
        label10.Text = "Subnet: ";

        foreach (UnicastIPAddressInformation uipi in adapter.GetIPProperties().UnicastAddresses)
        label10.Text += uipi.IPv4Mask;
    }
    foreach (GatewayIPAddressInformation GateWay in properties.GatewayAddresses)
    {
        label9.Text = "Gateway: " + GateWay.Address;
    }
}

Answer 2

那是因为你这么做是在前头：

label8.Text = "IP: " + (uniCast.Address); 

你在重写你的过激短信。

要么使用+=连接，要么使用字符串生成器构建它，然后将其用于标签。