Csharp/CSharp Tutorial/GUI Windows Forms/ScrollBar

ScrollBar Large/Small Range

using System;
using System.Drawing;
using System.Windows.Forms;
public class ScrollBarsRangeLargeSmall : Form
{
  HScrollBar hbar;
  VScrollBar vbar;
  public ScrollBarsRangeLargeSmall()
  {
    Size = new Size(480,500);
    hbar = new HScrollBar();
    hbar.Parent = this;
    hbar.Location = new Point(Left, Bottom + 25);
    hbar.Size = new Size(Width, 25);
    hbar.Minimum = 25;
    hbar.Maximum = 400;
    hbar.SmallChange = 10;
    hbar.LargeChange = 100;
    hbar.Value = Width - hbar.LargeChange;
    hbar.ValueChanged += new EventHandler(hbar_OnValueChanged);
    vbar = new VScrollBar();
    vbar.Parent = this;
    vbar.Location = new Point(Right + 25, Top);
    vbar.Size = new Size(25, Height);
    vbar.Minimum = 25;
    vbar.Maximum = 400;
    vbar.SmallChange = 10;
    vbar.LargeChange = 100;
    vbar.Value = Height - vbar.LargeChange;
    vbar.ValueChanged += new EventHandler(vbar_OnValueChanged);
  } 
  private void hbar_OnValueChanged(object sender, EventArgs e)
  {
    Console.WriteLine(hbar.Value);
  }
  private void vbar_OnValueChanged(object sender, EventArgs e)
  {
    Console.WriteLine(vbar.Value);
  }
  static void Main() 
  {
    Application.Run(new ScrollBarsRangeLargeSmall());
  }
}

ScrollBar Value changed event handler

using System;
using System.Drawing;
using System.Windows.Forms;
public class ScrollBarsControlPictureBox : Form
{
  Panel pnl;
  PictureBox pb;
  HScrollBar hbar;
  VScrollBar vbar;
  Image img;
  public ScrollBarsControlPictureBox()
  {
    Size = new Size(480,300);
    img = Image.FromFile("YourFile.gif");
    pnl = new Panel();
    pnl.Parent = this;
    pnl.Size = new Size(400,200);
    pnl.Location = new Point(10,10);
    pnl.BorderStyle = BorderStyle.FixedSingle;
    pb = new PictureBox();
    pb.Parent = pnl;
    pb.Size = new Size(img.Size.Width, img.Size.Height);
    pb.Location = new Point((pnl.Size.Width / 2) - (pb.Size.Width / 2),
                (pnl.Size.Height / 2) - (pb.Size.Height / 2));
    pb.SizeMode = PictureBoxSizeMode.CenterImage;
    pb.Image = img;
    hbar = new HScrollBar();
    hbar.Parent = this;
    hbar.Location = new Point(pnl.Left, pnl.Bottom + 25);
    hbar.Size = new Size(pnl.Width, 25);
    hbar.Minimum = 0;
    hbar.Maximum = 100;
    hbar.SmallChange = 1;
    hbar.LargeChange = 10;
    hbar.Value = (hbar.Maximum - hbar.Minimum) / 2;
    hbar.ValueChanged += new EventHandler(hbar_OnValueChanged);
    vbar = new VScrollBar();
    vbar.Parent = this;
    vbar.Location = new Point(pnl.Right + 25, pnl.Top);
    vbar.Size = new Size(25, pnl.Height);
    vbar.Minimum = 0;
    vbar.Maximum = 100;
    vbar.SmallChange = 1;
    vbar.LargeChange = 10;
    vbar.Value = (vbar.Maximum - vbar.Minimum) / 2;
    vbar.ValueChanged += new EventHandler(vbar_OnValueChanged);
  }
  private void hbar_OnValueChanged(object sender, EventArgs e)
  {
    pb.Location = new Point((pnl.Size.Width - img.Size.Width) * (hbar.Value) / (hbar.Maximum - hbar.LargeChange + 1), pb.Top);
  }
  private void vbar_OnValueChanged(object sender, EventArgs e)
  {
    pb.Location = new Point(pb.Left, (pnl.Size.Height - img.Size.Height) * vbar.Value / (vbar.Maximum - vbar.LargeChange + 1));
  }
  static void Main() 
  {
    Application.Run(new ScrollBarsControlPictureBox());
  }
}

Use ScrollBar to control Picture

using System;
using System.Drawing;
using System.Windows.Forms;
public class ScrollBarsControlPictureBox : Form
{
  Panel pnl;
  PictureBox pb;
  HScrollBar hbar;
  VScrollBar vbar;
  Image img;
  public ScrollBarsControlPictureBox()
  {
    Size = new Size(480,300);
    img = Image.FromFile("YourFile.gif");
    pnl = new Panel();
    pnl.Parent = this;
    pnl.Size = new Size(400,200);
    pnl.Location = new Point(10,10);
    pnl.BorderStyle = BorderStyle.FixedSingle;
    pb = new PictureBox();
    pb.Parent = pnl;
    pb.Size = new Size(img.Size.Width, img.Size.Height);
    pb.Location = new Point((pnl.Size.Width / 2) - (pb.Size.Width / 2),
                (pnl.Size.Height / 2) - (pb.Size.Height / 2));
    pb.SizeMode = PictureBoxSizeMode.CenterImage;
    pb.Image = img;
    hbar = new HScrollBar();
    hbar.Parent = this;
    hbar.Location = new Point(pnl.Left, pnl.Bottom + 25);
    hbar.Size = new Size(pnl.Width, 25);
    hbar.Minimum = 0;
    hbar.Maximum = 100;
    hbar.SmallChange = 1;
    hbar.LargeChange = 10;
    hbar.Value = (hbar.Maximum - hbar.Minimum) / 2;
    hbar.ValueChanged += new EventHandler(hbar_OnValueChanged);
    vbar = new VScrollBar();
    vbar.Parent = this;
    vbar.Location = new Point(pnl.Right + 25, pnl.Top);
    vbar.Size = new Size(25, pnl.Height);
    vbar.Minimum = 0;
    vbar.Maximum = 100;
    vbar.SmallChange = 1;
    vbar.LargeChange = 10;
    vbar.Value = (vbar.Maximum - vbar.Minimum) / 2;
    vbar.ValueChanged += new EventHandler(vbar_OnValueChanged);
  }
  private void hbar_OnValueChanged(object sender, EventArgs e)
  {
    pb.Location = new Point((pnl.Size.Width - img.Size.Width) * (hbar.Value) / (hbar.Maximum - hbar.LargeChange + 1), pb.Top);
  }
  private void vbar_OnValueChanged(object sender, EventArgs e)
  {
    pb.Location = new Point(pb.Left, (pnl.Size.Height - img.Size.Height) * vbar.Value / (vbar.Maximum - vbar.LargeChange + 1));
  }
  static void Main() 
  {
    Application.Run(new ScrollBarsControlPictureBox());
  }
}