工作表转图像 为渲染的图像设置像素格式

有时，当将工作表渲染为图像格式时，您可能需要指定像素格式。默认情况下，Aspose.Cells使用32位每像素。Aspose.Cells允许您使用渲染图像的选项自定义像素格式（位深度）。

请参阅下面的示例代码，演示了如何在渲染工作表的图像时设置所需的像素格式。

// For complete examples and data files, please go to https://github.com/aspose-cells/Aspose.Cells-for-.NET
//Source directory
string sourceDir = RunExamples.Get_SourceDirectory();

//Output directory
string outputDir = RunExamples.Get_OutputDirectory();

// Load an Excel file
Workbook wb = new Workbook(sourceDir + "sampleSetPixelFormatRenderedImage.xlsx");

//Access first worksheet
Worksheet ws = wb.Worksheets[0];

// Set the ImageOrPrintOptions with desired pixel format (24 bits per pixel) and image format type
ImageOrPrintOptions opts = new ImageOrPrintOptions();
opts.PixelFormat = PixelFormat.Format24bppRgb;
opts.ImageType = Drawing.ImageType.Tiff;

// Instantiate SheetRender object based on the first worksheet
SheetRender sr = new SheetRender(ws, opts);

// Save the image (first page of the sheet) with the specified options
sr.ToImage(0, outputDir + "outputSetPixelFormatRenderedImage.tiff");