The PictureBox control in .NET does not have scroll bars, however, it is actually really easy to create a PictureBox control with scroll bars enabled. All you have to do is to drop a panel control onto a form, and set the AutoScroll property to true.
this.panel1.AutoScroll = true;
And drop a PictureBox control inside the panel and set the SizeMode to AutoSize.
this.pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
That's it.