更改 PictureBox 图像 onClick [重复]

Question

我有 5 个图片框，我想在单击每个图片框时更改图像。 例如，如果pictureBox1上显示的图像是“_1”，当我单击它时，图像应该变为“_1x”，反之亦然。我的 if 子句中的代码永远不会被执行，我不知道为什么。

这是我的代码：

    private void Form1_Load(object sender, EventArgs e)
    {
        pb1.Image = Properties.Resources._1;
        pb2.Image = Properties.Resources._2;
        pb3.Image = Properties.Resources._3;
        pb4.Image = Properties.Resources._4;
        pb5.Image = Properties.Resources._10;
    }

    private void pb1_Click(object sender, EventArgs e)
    {
        if (pb1.Image == Properties.Resources._1)
        {
            pb1.Image = Properties.Resources._1x;
        }

        else { pb1.Image = Properties.Resources._1; }
    }

Answer 1

在将图像附加到图片框之前，您需要保留对图像的本地引用，否则它总是会创建新对象，因此比较失败。

试试这个：

  public partial class Form1 : Form
  {

    Bitmap img1 = Properties.Resources._1;
    Bitmap img2 =Properties.Resources._2;
    Bitmap img3 = Properties.Resources._3;
    Bitmap img4 = Properties.Resources._4;
    Bitmap img10 = Properties.Resources._10;

    Bitmap img1x = Properties.Resources._1x
    public Form1()
    {
        InitializeComponent();
        pb1.Image = img1; //assign image1 to picturebox here
        pb2.Image = img2; 
        pb3.Image = img3; 
        pb4.Image = img4; 
        pb10.Image = img10; 
    }
    private void pb1_Click(object sender, EventArgs e)
    {
       if (pb1.Image == img1)
       {
         pb1.Image = img1x ;
       }

       else { pb1.Image = img1; }
    }
  }