Gets or sets the size of Document headers that are presented as tiles within this TabbedGroup.
An Int32 value that is the size of Document headers that are presented as tiles within this TabbedGroup.
Use the TileSize property to set the size of a custom Document header. This property only affects Document headers displayed as tiles. To choose the header style (Windows 10-like tiles or traditional tabs) use the ITabbedGroupDefaultProperties.HeaderStyle property.