We’re pleased to announce the release of Spire.XLS 16.10.3. This version adds support for converting TSV files to PDF and fixes issues related to formula calculation during Excel-to-PDF conversion and data export. It also updates the .NET Core packaging and image-processing dependencies for .NET 6.0, .NET 9.0, and .NET 10.0. More details are listed below.

Here is a list of changes made in this release

Workbook workbook = new Workbook();
            workbook.LoadFromFile(inputFile, "\t");
            workbook.SaveToFile(outputFile, FileFormat.PDF);
            workbook.Dispose(); 

.NET Core Packaging and Image Processing Changes

The dependencies for .NET 6.0, .NET 9.0, and .NET 10.0 have been updated as follows.
The dependencies listed here are minimum versions.

Image Export Code Migration

When exporting a worksheet to an image, the returned value is now a Stream. The image stream can be copied to a file instead of calling Save() directly on the result.

• Previous code using System.Drawing:

Workbook workbook = new Workbook();
workbook.LoadFromFile(@"in.xlsx");
Worksheet sheet = workbook.Worksheets[0];
sheet.ToImage(sheet.FirstRow, sheet.FirstColumn, sheet.LastRow, sheet.LastColumn).Save("SheetToImage.png");

• Updated code using SkiaSharp-based image processing:

Workbook workbook = new Workbook();
workbook.LoadFromFile(@"in.xlsx");
Worksheet sheet = workbook.Worksheets[0];
Stream image = sheet.ToImage(sheet.FirstRow, sheet.FirstColumn, sheet.LastRow, sheet.LastColumn);
string filename = String.Format("SheetToImage.png");
FileStream fileStream = new FileStream(filename, FileMode.Create, FileAccess.Write);
image.CopyTo(fileStream, 100);
fileStream.Flush();
fileStream.Close();
image.Close();