c# - 在 C# 中从 PictureBox 中删除图像

Question

当用户按下“del”键时如何从图片框中删除图像...我没有找到 PB 的任何按键或按键事件。

    private void topRight_pbx_MouseClick(object sender, MouseEventArgs e)
          {
           imgSelected=true;

           //need to accept "delete"key from keyboard?

           topRight_pbx.Image = null;
            topRFile = "";

           }

Answer 1

将您的 imgSelected 更改为类似的内容:

private PictureBox picSelected = null;

在您的图片框上单击将此变量设置为发件人:

picSelected = (PictureBox)sender;

然后在窗体的 keydown 或具有焦点的控件上运行图像删除代码(表格示例):

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
   if (e.KeyCode == Keys.Delete)
      picSelected.Image = null;
}