Basic Report Design - Professional SQL Server 2005 Reporting Services - page 87

Note that the Report Designer is currently only 5 inches wide and that the grid containing the fields
partially fills this space. You need to make some adjustments to use the available space.
You should be able to use all of the available space to fill your target page size. Apply the following
formula to calculate the report page width:
Report Width = Body Width + Left Margin + Right Margin
You can set the report size by either resizing the report body in the designer with the mouse or by setting
the Height and Width values in the Properties window. Although it usually makes sense to match the
report size to the paper size for printed reports, the report width may be set as wide as 160 inches.
Click on the report background and view the Properties window (either right-click and choose
Properties or just click the Properties tab on the right side of the designer). Verify that Body is displayed
in the drop-down list at the top of the Properties window. Now, click the small plus sign next to Size to
expand this item and set the properties, as shown in Figure 4-21.
Figure 4-21