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CAD绘图控件 VectorDraw Developer Framework 从6.11版开始在PrinterRender对象中新增了一个方法：ExportMultiPagePDF，这个方法可以输出多页PDF文件。下面跟大家列举两种多页打印PDF的应用技巧。

1、下面这个示例演示输出PDF文件单独页面的所有布局：

int numprinters = vdFramedControl.BaseControl.ActiveDocument.LayOuts.Count + 1;
vdPrint []printers = new vdPrint[numprinters];
int i = 0;
printers[i] = vdFramedControl.BaseControl.ActiveDocument.Model.Printer;
printers[i].PrintExtents();
printers[i].PrintScaleToFit();
i++;
foreach (vdLayout layout in vdFramedControl.BaseControl.ActiveDocument.LayOuts)
{
printers[i] = layout.Printer;
i++;
}
VectorDraw.Render.PrinterRender.ExportMultiPagePDF(new RenderFormats.PdfRender(), vdFramedControl.BaseControl.ActiveDocument, printers, @"C:\Documents and Settings\Administrator\Desktop\test.pdf");

2、如果你的绘图没有布局，只有模型，想把多个PDF页面中的模型打印出来，那请参考下面的代码：

int numprinters = 2; //two pages = two regions
VectorDraw.Professional.vdObjects.vdPrint[] printers = new VectorDraw.Professional.vdObjects.vdPrint[numprinters];
int i = 0;

//set the first printer settings and printable area
printers[i] = new VectorDraw.Professional.vdObjects.vdPrint(vdFramedC.BaseControl.ActiveDocument.Model.Printer);
printers[i].PrintWindow = new VectorDraw.Geometry.Box(new VectorDraw.Geometry.gPoint(-2, -1), new VectorDraw.Geometry.gPoint(866, 1122));
printers[i].PrintScaleToFit();

//set the second printer settings and printable area
i++;
printers[i] = new VectorDraw.Professional.vdObjects.vdPrint(vdFramedC.BaseControl.ActiveDocument.Model.Printer);
printers[i].PrintWindow = new VectorDraw.Geometry.Box(new VectorDraw.Geometry.gPoint(-2, -1458), new VectorDraw.Geometry.gPoint(866, -330));
printers[i].PrintScaleToFit();

//Export to PDF
VectorDraw.Render.PrinterRender.ExportMultiPagePDF(new RenderFormats.PdfRender(), vdFramedC.BaseControl.ActiveDocument, printers, @"C:\testing\test1.pdf");