Load document of specific format Leave feedback

The constructors Watermarker(String) and Watermarker(Stream) can load a document of any supported format. When you’re loading a document, GroupDocs.Watermark automatically detects its type and creates an instance of the appropriate class. If document format is not supported, constructor throws UnsupportedFileTypeException. If you need specify the format of a document to load, you can use constructors with LoadOptions parameter.

The following example demonstrates how to create a watermarker for the Spreadsheet document:

AdvancedUsage.LoadingDocuments.LoadingDocumentOfSpecificFormat

// Specify an absolute or relative path to your document. Ex: @"C:\Docs\spreadsheet.xlsx"
string filePath = "spreadsheet.xlsx";
var loadOptions = new LoadOptions()
{
    FileType = FileType.FromExtension(Path.GetExtension(filePath))
};

// Or set the FormatFamily property directly when using a stream, for example:
loadOptions.FormatFamily = FormatFamily.Spreadsheet;

using (Watermarker watermarker = new Watermarker(filePath, loadOptions))
{
    // use watermarker methods to manage watermarks in the Spreadsheet document
    TextWatermark watermark = new TextWatermark("Test watermark", new Font("Arial", 12));
    watermarker.Add(watermark);
    watermarker.Save("spreadsheet.xlsx");
}

Any supported format family has the specific LoadOptions descendant:

Format	LoadOptions descendant
Diagram	DiagramLoadOptions
Email	EmailLoadOptions
Image	ImageLoadOptions
GIF Image	GifImageLoadOptions
TIFF Image	TiffImageLoadOptions
PDF	PdfLoadOptions
Presentation	PresentationLoadOptions
Spreadsheet	SpreadsheetLoadOptions
WordProcessing	WordProcessingLoadOptions

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Load document of specific format Leave feedback

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