using System;
using System.Drawing;
using System.Windows.Forms;

namespace Panel
{
    public partial class Form1 : Form
    {
        PictureBox pictureBox1;
        PictureBox pictureBox2;

        int SizeOfPixcel = 10; //Во сколько раз увеличиваем изображение по ширине и по высоте

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Image image = Image.FromFile("C:\\Users\\Acer\\Desktop\\image1.png");

            pictureBox1 = new PictureBox();
            pictureBox1.Name = "pictureBox1";
            pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
            pictureBox1.Image = image;

            panel1.AutoScroll = true;
            panel1.Controls.Add(pictureBox1);            

            pictureBox2 = new PictureBox();
            pictureBox2.Name = "pictureBox2";
            pictureBox2.SizeMode = PictureBoxSizeMode.Zoom;
            pictureBox2.Image = image;
            pictureBox2.Width = image.Width * SizeOfPixcel;
            pictureBox2.Height = image.Height * SizeOfPixcel;

            panel2.AutoScroll = true;
            panel2.Controls.Add(pictureBox2);

            pictureBox1.MouseDown += new MouseEventHandler(pictureBox1_MouseDown);
        }

        private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
        {            
            //panel2.HorizontalScroll.Value = e.X * SizeOfPixcel;
            //panel2.VerticalScroll.Value = e.Y * SizeOfPixcel;

            panel2.AutoScrollPosition = new Point((int) (e.X * SizeOfPixcel * panel2.HorizontalScroll.Maximum / pictureBox2.Width),
                                                   (int) (e.Y * SizeOfPixcel * panel2.VerticalScroll.Maximum / pictureBox2.Height));
        }
    }
}