public DockingStyle Docking { get; set; }

Public Property Docking As DockingStyle
	Get
	Set

Property Value

Use the Docking property to define how a report is automatically resized as its parent is resized. For example, setting Docking to Bottom causes the report item to align itself with the bottom edges of its parent and to resize as the parent is resized.

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

Note:The Anchoring and Docking properties are mutually exclusive. Only one can be set at a time, and the last one set takes precedence.

Reference