c＃在子PictureBox更改Image時調整父控件的大小

Question

我有一個包含圖片框和標簽的UserControl。 控件在不同事件（例如onMouseEnter，OnMouseLeave）中在PictureBox中加載三個不同的圖像。 由於圖像可以具有不同的大小，因此我無需調整pictureBox和控件本身的大小。 下面提供了控件的OnPaint事件，但這不起作用。

    protected override void OnPaint(PaintEventArgs pe)
    {

        if (pictureBox.Image != null)
        {
            this.Width = this.pictureBox.Image.Size.Width;
            this.Height = this.pictureBox.Image.Size.Height;
            CutRoundedRectangle2(pictureBox, cornerRadius);
        }
        else
        {
            Bitmap DrawArea = new Bitmap(pictureBox.Size.Width, pictureBox.Size.Height);
            Graphics g = Graphics.FromImage(DrawArea);
            Pen mypen = new Pen(Color.Black);
            pictureBox.Image = DrawArea;
            System.Drawing.Pen pen = new Pen(new SolidBrush(this.ForeColor));
            g.DrawRectangle(pen, 0, 0, this.Width-1, this.Height-1);
            g.Dispose();
        }
        this.labelText.ocation = new Point((this.pictureBox.Width - this.labelText.Width) / 2,
                                            (this.pictureBox.Height - this.labelText.Height) / 2);
        base.OnPaint(pe);
    }

pictureBox SizeMode在控件的構造函數中設置：

this.pictureBox.SizeMode = PictureBoxSizeMode.AutoSize;

Answer 1

很久以前，我上次使用WinForms時，但是...
我的第一個想法是：您是否曾嘗試將父控件的AutoSize屬性的值設置為'true'並將AutoSizeMode為GrowAndShrink並在將新圖像加載到圖片框時調用父控件的Refresh()方法？

Answer 2

@ Alexey，pictureBox調整大小事件很有幫助！

    private void pictureBox_Resize(object sender, EventArgs e)
    {
        this.Width = this.pictureBox.Image.Size.Width;
        this.Height = this.pictureBox.Image.Size.Height;
    }