Use the StatusStrip.Dock property to define how a System.Windows.Forms.StatusStrip is automatically resized as its parent control is resized. For example, setting StatusStrip.Dock to DockStyle.Left causes the System.Windows.Forms.StatusStrip to align itself with the left edges of its parent control and to resize as the parent control is resized. Controls are docked in their Z-order, which is the visual layering of controls on a form along the form's Z-axis (depth).

A control can be docked to one edge of its parent container or can be docked to all edges and fill the parent container.