Digitally Sign XLSB Files in C# .NET, Xamarin & Mono

Add Digital Signatures to XLSB in C#

Conholdate.Total for .NET supports signing XLSB documents with digital signatures using a few lines of C# .NET code.

Instantiate Signature with input (XLSB) document
Instantiate DigitalSignOptions object with certificate details & password
Call Sign method of Signature class and pass DigitalSignOptions to it

Download Digital Signature API

Signing digital documents requires GroupDocs.Signature namespace. You can download the respective files or fetch the whole package directly from NuGet.

Sign your digtial documents with Barcode, Text, Image, Metadata, QR Code, Form Field and stamp signatures on operating systems such as Windows, Linux or macOS while using platforms such as Windows Azure, Mono and Xamarin.

Add Image Signatures to XLSB in C# .NET

Programmatically add digital image signatures to XLSB documents in C# .NET applications. Create custom images, company logos, names, stamps or icons with advanced affects using the electronic signature API.

Instantiate Signature with input (XLSB) document
Instantiate ImageSignOptions object as required and specify image signature options
Call Sign method of Signature class and pass ImageSignOptions to it

XLSB Document Information Extraction

The documents information extraction API not only allows getting the basic information about the source document file (XLSB) but it also supports extracting some valuable document information such as file type, file size, pages count, page height and width etc.

Add custom digital signatures to document formats on different operating systems such as Windows, Linux or macOS while using platforms such as Windows Azure, Mono and Xamarin.

Add Barcode Signatures to XLSB in C# .NET

Digitally sign XLSB documents with barcode or QR-code signatures in any type of .NET application. Add 60+ popular barcode types (machine-readable form) as electronic signatures to a wide range of digital documents and image formats.

Instantiate Signature with input (XLSB) document
Instantiate BarcodeSignOptions object as per requirementand specify barcode signature type
Specify barcode signature type and set Text property value
Call Sign method of Signature class and pass BarcodeSignOptions to it

Load & Sign Remotely Located Documents

The document eSign API enables you to render remotely located documents from various cloud document storage sources such as stream, local disk, URL, FTP, Amazon S3, and Azure Blob storage. The document preview feature enables you to get the image representation of the document pages that can be useful to preview and adjust the position of digital signature inside the document.

Get the document preview of whole document or some specific page numbers in PNG, JPG or BMP image formats.

What is XLSB file format?

The XLSB file format is a binary file format used for Microsoft Excel workbooks. Unlike the XLSX and XLSM file formats, which are based on the Open XML format, XLSB is a binary format that stores data in a binary structure. This binary structure allows for faster file processing and improved performance compared to the XML-based formats.

XLSB files contain spreadsheet data, including worksheets, formulas, charts, and other elements commonly found in Excel workbooks. The binary format optimizes storage and calculation efficiency, making it well-suited for large datasets and complex calculations. It also provides better data integrity and recovery capabilities, as the binary structure reduces the risk of file corruption.

Due to its binary nature, XLSB files are not easily readable or editable by humans. They are primarily intended for use by Excel and other applications that can read and process the binary format. However, Excel provides full compatibility and support for opening, editing, and saving XLSB files.

The advantages of using XLSB files include faster file operations, reduced file size compared to XML-based formats, and improved performance in terms of opening, saving, and recalculating complex workbooks. XLSB files are particularly useful for workbooks that involve large amounts of data or complex formulas.

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Digitally Sign XLSB in C# .NET