根据图片框中的图像更改按钮标签

Question

我正试图用旧的Windows Forms用c＃制作一个程序。我设法制作了一个PictureBox，当程序以resources的随机图像开始时。我的问题是我有4个按钮，我想根据屏幕上的图像更改标签文本，但没有成功。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

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

            List<Image> images = new List<Image>();

            images.Add(Properties.Resources.Abessinier);
            images.Add(Properties.Resources.Bengal);
            images.Add(Properties.Resources.American_curl);
            images.Add(Properties.Resources.Balines);
            images.Add(Properties.Resources.brittisk_korthår);

            Random random = new Random();
            pictureBox1.Image = images[random.Next(0, images.Count - 1)];

            if (pictureBox1.Image == Properties.Resources.Abessinier )
            {
                button1.Text = "some text";
                button2.Text = "some text";
                button3.Text = "some text";
                button4.Text = "some text";
            }

            if (pictureBox1.Image == Properties.Resources.Bengal)
            {
                button1.Text = "some other text";
                button2.Text = "some other text";
                button3.Text = "some other text";
                button4.Text = "some other text";
            }


        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {


        }
    }
}

Answer 1

为什么不使函数同时执行这两个操作，您也可能希望在索引选择器而不是实际资源本身上进行比较。

private void SetImage(PictureBox target)
{
     List<Image> images = new List<Image>();

     images.Add(Properties.Resources.Abessinier);
     images.Add(Properties.Resources.Bengal);
     images.Add(Properties.Resources.American_curl);
     images.Add(Properties.Resources.Balines);
     images.Add(Properties.Resources.brittisk_korthår);

     Random random = new Random();
     var selectedIndex = random.Random(0, images.Count - 1);
     target.Image = images[selectedIndex];

     switch(selectedIndex)
     {
         case 0:
               button1.Text = "some text";
               button2.Text = "some text";
               button3.Text = "some text";
               button4.Text = "some text"; 
               break; 
         case 1:
               button1.Text = "some other text";
               button2.Text = "some other text";
               button3.Text = "some other text";
               button4.Text = "some other text"; 
               break;
               // Keep going with additional statements, and include a default too... 
     }
}

作为一个粗略的想法，我建议清理代码，使函数成为一个新类，使类从字典或其他东西加载图像和文本。

Answer 2

一个想法可能是将文本与Tuple或自定义类中的图像耦合：

class ImageWithText
{
    public Image Image { get; set; }
    public string Text { get; set; }

    public ImageWithText(Image image, string text)
    {
        Image = image;
        Text = text;
    }
}

然后，当您填充列表时，可以将两个项目一起添加：

var images = new List<ImageWithText>();

images.Add(new ImageWithText(Properties.Resources.Abessinier, "Abessinier description"));
images.Add(new ImageWithText(Properties.Resources.Bengal, "Bengal description"));
images.Add(new ImageWithText(Properties.Resources.American_curl, 
    "American_curl description"));
images.Add(new ImageWithText(Properties.Resources.Balines, "Balines description"));
images.Add(new ImageWithText(Properties.Resources.brittisk_korthår, 
    "brittisk_korthår description"));

最后，当您从列表中选择随机对象时，您可以指定属性：

ImageWithText randomItem = images[random.Next(images.Count)];

pictureBox1.Image = randomItem.Image;
button1.Text = randomItem.Text;
button2.Text = randomItem.Text;
button3.Text = randomItem.Text;
button4.Text = randomItem.Text;