How to: Set Layout in a CheckBoxList Web Server Control
By default, thecontrol displays a single column of check boxes. However, you can specify any number of columns, and within the columns, you can specify how the items are ordered: vertically (the default) or horizontally. Vertical layout in three columns results in a layout such as the following:
A D G B E H C F
Horizontal layout for the same items results in the following layout:
A B C D E F G H
To specify column count and ordering
Set the CheckBoxList control'sproperty to the number of columns you want.
Set theto Vertical or Horizontal. If you are setting the property in code, use the enumeration, as shown in the following example: