------------------------------------------------------------------
string marginTop = "20.255";
strinf marginLeft = "10.00";
string deviceInfo =
"<DeviceInfo>" +
" <MarginTop>" + marginTop + "cm</MarginTop>" +
" <MarginLeft>" + marginLeft + "cm</MarginLeft>" +
"</DeviceInfo>";
byte[] bytes = localReport.Render("PDF", deviceInfo);
------------------------------------------------------------------
デザインで"本文"のSizeと余白を足しても
"レポート"のPageSizeを超えない用に設定!