There was originally also a horizontal scroll bar, but it goes away when i expand the screen to full screen view.,
The aspx form hosting the reportviewer control appears to cover the entire screen, the reportviewer control is set at 100 % height and 100% width. I have the report rdlc file set at a width of about 10.5 inches. The height would be about 6 inches, but I do not think that is so important.
Does anyone know where the setting is to get the height report to ncrease