从C#中的PictureBox中删除图像

Question

当用户按"del"键时,如何从图片框中删除图像...我没有找到PB的任何按键或键盘事件.

    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：

private PictureBox picSelected = null;

在图片框中单击将此变量设置为发件人：

picSelected = (PictureBox)sender;

然后在表单或具有焦点的控件上按下按键，运行图像删除代码（表单示例）：

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