C# 动态添加的事件处理程序不'；在C语言中不能像预期的那样工作#

我已经为用MainForm创建的

PictureBox

编写了事件处理程序 pictureBox的名称为

pictureBoxBackGround

。 我动态添加了更多PictureBox，并将它们的事件处理程序与

pictureBoxBackGround

的事件处理程序相关联，因为我希望它们的行为方式相同。 当我移动

pictureBoxBackGround

时，事件处理程序工作正常，但它们不能与新的PictureBox一起正常工作

以下是事件处理程序：

 private void pictureBoxBackGround_MouseDown(object sender, MouseEventArgs e)
    {
        //Begin Move 

        m_pointLastMousePos = Cursor.Position;

        m_bIsPictureBeingMoved = true;
    }

    private void pictureBoxBackGround_MouseUp(object sender, MouseEventArgs e)
    {
        //End Move
        m_bIsPictureBeingMoved = false;
    }

    private void pictureBoxBackGround_MouseMove(object sender, MouseEventArgs e)
    {
        if(m_bIsPictureBeingMoved == true)
        {
            PictureBox picboxSelected = sender as PictureBox;

            int nHorizontalChange = Cursor.Position.X - m_pointLastMousePos.X;

            int nVerticalChange   = Cursor.Position.Y - m_pointLastMousePos.Y;

            Point pointNewImagePosition = pictureBoxBackGround.Location;

            pointNewImagePosition.X = pointNewImagePosition.X + nHorizontalChange;

            pointNewImagePosition.Y = pointNewImagePosition.Y + nVerticalChange;

            if (pointNewImagePosition.X > 0 &&
                pointNewImagePosition.Y > 0)
            {
                picboxSelected.Location = pointNewImagePosition;

                m_pointLastMousePos = Cursor.Position;
            }
        }
    }

我是这样附加它们的：

picBox.MouseDown += new MouseEventHandler(this.pictureBoxBackGround_MouseDown);

            picBox.MouseUp += new MouseEventHandler(this.pictureBoxBackGround_MouseUp);

            picBox.MouseMove += new MouseEventHandler(this.pictureBoxBackGround_MouseMove);

---

这是因为您仍在事件中使用原始picturebox，例如，这一行：

Point pointNewImagePosition = pictureBoxBackGround.Location;

您需要确保事件中对picturebox的所有引用都指向

发送方，而不是
pictureBoxBackGround
。所以这条线应该是：

Point pointNewImagePosition = picboxSelected.Location;