c# - 动态改变面板的大小

Question

我正在实现一个需要在面板中拖放图像框的应用程序。图像框是从程序中动态添加的，因此我在面板中将自动滚动属性设置为 true。但是当我拖出图像框时面板底部的面板尺寸减小了。我在面板中设置了 autosize 属性 false。面板停靠在另一个面板中。我想在运行时设置面板的尺寸。我该如何实现。

public form1(int[,] dummy, int columnSize, int rowSize)
   {
       this.dummy= dummy;
       numOfColumns = columnSize;
        numOfRows = rowSize;
        getData();
        addIds = addIdArray;
        data = mylist;
        InitializeComponent();
        //panel1.MinimumSize = new Size(columnSize * 40, rowSize * 40);
        //panel1.Height = rowSize * 40;
        //panel1.Width = columnSize * 40;
        //panel4.Height = rowSize * 40;
        //panel4.Width = columnSize * 40;
        int x, y;
        Structures.EmptyRectSpace space = new Structures.EmptyRectSpace();
        for (int i = 0; i < data.Count; i++)// set picture boxes 
        {
            space = (Structures.EmptyRectSpace)data[i];
            x = space.startingJ;
            y = space.startingI;
            int h, w;
            h = space.length;
            w = space.width;

             p = new PictureBox();
                p.Width = w * 40;
                p.Height = h * 40;
                p.BackColor = Color.DarkGreen;
                p.Image = Properties.Resources.v;
                p.BorderStyle = BorderStyle.FixedSingle;
                p.Name = addIdArray[i].ToString();
                p.Location = new Point((x + 1 - w) * 40, (y + 1 - h) * 40);

                this.panel1.Controls.Add(p);
        }

        foreach (Control c in this.panel1.Controls)
        {
            if (c is PictureBox)
            {
                c.MouseDown += new MouseEventHandler(pictureBox1_MouseDown);
            }
        }
        this.panel1.DragOver += new System.Windows.Forms.DragEventHandler(this.panel1_DragOver);
        panel1.DragOver += new DragEventHandler(panel1_DragOver);
        panel1.DragDrop += new DragEventHandler(panel1_DragDrop);
        panel1.AllowDrop = true;
        panel2.AllowDrop = true;
        foreach (Control c in this.panel2.Controls)
        {
            c.MouseDown += new MouseEventHandler(pictureBox1_MouseDown);
        }
        this.panel2.DragOver += new System.Windows.Forms.DragEventHandler(this.panel2_DragOver);
        panel2.DragOver += new DragEventHandler(panel2_DragOver);
        panel2.DragDrop += new DragEventHandler(panel2_DragDrop); 
    }

这是包含面板的窗体的构造函数。加载时，必须将图片框添加到面板，并实现面板的拖放事件。

请帮帮我..

Answer 1

除非我在代码中以编程方式设置最大宽度，否则我无法让它工作。设计器中的最大宽度是多少(或者是否设置了最大宽度)并不重要。

int newWidth = 200;
panel.MaximumSize = new Size(newWidth, panel.Height);
panel.Size = new Size(newWidth, panel.Height);