تكوينات التنسيق

var token = await viewer.OpenDocumentAsync(path, new PdfConfig
{
    AllowSearch = true,
    AllowCopy   = true,
    ImageResolution = 150
});

BaseConfig[] configs =
{
    new PdfConfig
    {
        AllowSearch = true,
        ExtractHyperlinks = true,
        HyperlinksPageCount = 0
    },
    new WordConfig
    {
        PaperSize = DocPaperSize.A4,
        RemovePaperMargin = false,
        FontFolders = new[] { HostingEnvironment.MapPath("~/App_Data/Fonts") },
        AllowSearch = true
    },
    new ExcelConfig
    {
        PaperLandscape = true,
        AutoFitContents = true,
        CalculateFormula = true,
        SplitWorksheets = false,
        PrintGridlines = false
    },
    new PptConfig
    {
        FastLoad = true,
        FontFolders = new[] { HostingEnvironment.MapPath("~/App_Data/Fonts") },
        AllowSearch = true
    },
    new CadConfig
    {
        ShowColor = true,
        WhiteBackground = true,
        ShowModel = true,
        ShowLayouts = false,
        QualityText = CadConfig.RenderQuality.High
    },
    new EmailConfig
    {
        SkipExternalImages = true,
        RemoveLastWhitePage = true,
        TimeZoneOffset = TimeSpan.Zero
    },
    new ImageConfig
    {
        MaxImagePixelSize = 3000,
        TransparentPng = true
    },
    new DicomConfig
    {
        DisplayMode = DicomDisplayMode.AnimationAndFrames,
        AnimationFrameDelayMs = 100,
        LoopCount = 0
    }
};

static BaseConfig ConfigForExtension(string extUpper)
{
    switch (extUpper)
    {
        case ".DOC": case ".DOCX": case ".DOT": case ".DOTX": case ".ODT":
            return new WordConfig
            {
                AutoFitAllTables = WordConfig.TableAutoFitBehavior.AutoFitToWindow,
                PaperSize = DocPaperSize.Tabloid,
                PdfConfig = new PdfConfig { ExtractHyperlinks = true, HyperlinksPageCount = 5, AllowCopy = true }
            };
        case ".PDF":
            return new PdfConfig { AllowSearch = true, AllowCopy = true };
        case ".XLS": case ".XLSX": case ".ODS": case ".CSV":
            return new ExcelConfig { AllowSearch = true, AllowCopy = true };
        case ".DCM": case ".IMA":
            return new DicomConfig { DisplayMode = DicomDisplayMode.AnimationAndFrames };
        // DefaultRender = false → PDF redirect → pixel-accurate native text search
        case ".HTML": case ".HTM":
            return new HtmlConfig { DefaultRender = false };
        case ".EML": case ".EMLX": case ".MSG":
            return new EmailConfig { DefaultRender = false };
        default:
            return null; // fall back to the format's default config
    }
}