避免输出PDF中的空白页在没有内容打印时

可能的使用场景

当Excel文件为空并且用户使用Aspose.Cells for Python via .NET将其保存为PDF时，输出PDF中会呈现一个空白页。有时，这种默认行为是不希望的。Aspose.Cells for Python via .NET提供PdfSaveOptions.output_blank_page_when_nothing_to_print属性来处理此问题。如果将其设置为false，那么在输出PDF中没有内容可打印时将发生CellsException。

当没有需要打印的内容时，避免在输出PDF中出现空白页

以下示例代码创建一个空的工作簿，然后将其保存为PDF，设置PdfSaveOptions.output_blank_page_when_nothing_to_print属性为false后保存。由于输出PDF中没有需要打印的内容，CellsException的情况如下所示。

示例代码

from aspose.cells import PdfSaveOptions, Workbook
from io import BytesIO

#  For complete examples and data files, please go to https:# github.com/aspose-cells/Aspose.Cells-for-.NET
# Create empty workbook.
wb = Workbook()
# Create Pdf save options.
opts = PdfSaveOptions()
# Default value of OutputBlankPageWhenNothingToPrint is true.
# Setting false means - Do not output blank page when there is nothing to print.
opts.output_blank_page_when_nothing_to_print = False
# Save workbook to Pdf format, it will throw exception because workbook has nothing to print.
ms = BytesIO()
try:
    # Save to Pdf format. It will throw exception.
    wb.save(ms, opts)
except Exception as ex:
    print(str(ex))

异常

 Aspose.Cells.CellsException was unhandled

  HResult=-2146232832

  Message=There is nothing to output/print.

  Source=Aspose.Cells

  StackTrace:

       at Aspose.Cells.Workbook.Save(String fileName, SaveOptions saveOptions)