GroupDocs.Comparison for .NET 26.1 – ไฮไลท์การปล่อยเดือนมกราคม 2026

string sourcePath = @"source.pdf";

using (Comparer comparer = new Comparer(sourcePath))
{
    ReleasePageStream releasePageStreamDelegate = delegate (int number, Stream stream)
    {
        stream.Close();
    };

    PreviewOptions previewOptions = new PreviewOptions(pageNumber =>
    {
        string outputFolder = @"c:\Temp";
        var pagePath = Path.Combine(outputFolder, $"result_{pageNumber}.png");
        return File.Create(pagePath);
    },
    releasePageStreamDelegate);

    previewOptions.PreviewFormat = PreviewFormats.PNG;
    previewOptions.PageNumbers = new int[] {2,3};
    previewOptions.Resolution = new PreviewResolution()
    {
        HorizontalResolution = 300,
        VerticalResolution = 300
    };
    
    comparer.Source.GeneratePreview(previewOptions);
}