滚动条能扭曲图像？

Question

当panel的AutoScroll属性为false时，没有滚动条，图形很对称当panel的AutoScroll属性为true时，有滚动条，图形变了，线条乱七八糟，不对齐
请问，是什么原因？如何解决？

Answer 1

panel1.HorizontalScroll.Visible = false;//横的
  panel1.VerticalScroll.Visible = false;//竖的 

Answer 2

把你的Panel控制到刚好容下所有控件，设置滚动条每步滚动的像素点。调整到合适大小。如果你的Panel宽度固定的话，可以用%试试 

Answer 3

代码是这样的，麻烦帮忙看一下 ，把Panel的AutoScroll属性设置为turepublic partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            Label label;
            int a = -10;
            for (int i = 0; i < 1000; i++)
            {
                label = new Label(); 
                label.Height = 72; 
                label.Width = 10;
                label.Top = 0;
                label.Name = "label" + i.ToString();
                a += 10;
                label.Left = a;
                panel1.HorizontalScroll.Visible = false;
                label.Click += buttonN_Click;
                label.BackColor = Color.Transparent;
                this.panel1.Controls.Add(label);   
            }            
        }
       // 画直线
        private void panel1_Paint(object sender, PaintEventArgs e)
        {
            int a = -10;
            Graphics graphics = e.Graphics;
            Pen pen1 = new Pen(Color.Gray, 1);
            Point point1 = new Point();
            Point point2 = new Point();
            for (int i = 0; i < 1000; i++)
            {
                a += 10;
                point1.X = a;
                point1.Y = 0;
                point2.X = a;
                point2.Y = 3000;
                graphics.DrawLine(pen1, point1, point2);
            }
            graphics.DrawLine(pen1, 0, 0, 2000, 0);
            graphics.DrawLine(pen1, 0, 72, 2000, 72);
         }               
    }

Answer 4

等待答案，我试了一下，把Form窗口最小化，然后恢复，图形又正常了...啥原因

Answer 5

请问，造成这种情况，是不是下面的线条重绘了，而上面的label没有重绘

Answer 6

// 画直线
        private void panel1_Paint(object sender, PaintEventArgs e)
        {
            for (int i = 0; i < this.panel1.Controls.Count; i++)
            {
                Label lb = this.panel1.Controls[i] as Label;
                if (lb == null)
                    continue;
                e.Graphics.DrawLine(new Pen(Brushes.Black), lb.Location.X, lb.Location.Y,
                    lb.Location.X, 3000);
            }
            e.Graphics.DrawLine(new Pen(Brushes.Black), 0, 0, 2000, 0);
            e.Graphics.DrawLine(new Pen(Brushes.Black), 0, 72, 2000, 72);
        }