Convert XLS to ODS in C# .NET or Online XLS Converter

Convert XLS to ODS in .NET

Follow these simple steps to convert XLS files to ODS in .NET. You can view the converted files as they are, or render and display them as HTML without using any external software.

Get the respective assembly files from the downloads or fetch the whole package from NuGet to add Conholdate.Total for .NET directly in your workspace.

Create Converter object to convert XLS document
Set the convert options for ODS format
Call Convert method of Converter class instance for conversion to ODS
Set options for HTML viewer
Create Viewer object to view converted ODS as HTML

Free App for XLS to ODS Conversion

	// Supports converting documents between Word, Excel, PowerPoint, Project, Images, Web, Email, Metafiles and Diagram file formats.
	// Supported file formats: https://docs.groupdocs.com/conversion/net/supported-document-formats/
	using (Converter converter = new Converter("input.xlsx"))
	{
	var convertOptions = converter.GetPossibleConversions()["pdf"].ConvertOptions;

	converter.Convert("output.pdf", convertOptions);
	}

	HtmlViewOptions viewOptions = HtmlViewOptions.ForEmbeddedResources("output{0}.html");

	using (Viewer viewer = new Viewer("output.pdf"))
	{
	viewer.View(viewOptions);
	}

view raw excel-to-pdf-conversion.cs hosted with ❤ by GitHub

Convert XLS to PDF/Word/HTML/PPTX in C#

Convert your XLS files to other popular documents formats such as PDF, HTML, PowerPoint presentations and Word processing documents using C# .NET code. Load the source XLS file and save it as a converted document in some other document format such as PDF, DOCX, HTML or PPTX.

Create Converter object and pass source XLS file to it
Instantiate the proper ConvertOptions class e.g. (PdfConvertOptions for conversion to PDF, WordProcessingConvertOptions for conversion to Word formats, MarkupConvertOptions for conversion to HTML, PresentationConvertOptions for conversion to PowerPoint formats)
Call Convert method of Converter class instance for conversion to PDF/HTML/PPTX or Word document format

Auto-Cache Converted ODS Document

In certain situations, the converted document may have a larger file size and require additional time for conversion. By default, the cached converted documents are stored locally. However, with Conholdate.Total for .NET, you can take advantage of the custom cache implementation feature using the iCache interface. This allows you to efficiently manage and customize the storage of conversion results according to your specific requirements. By implementing this feature, you can significantly improve the repetitive conversion process.

The .NET Excel conversion library offers comprehensive support for converting to and from password protected archives. Additionally, it provides the ability to compress the conversion results into various archive formats, including ZIP, RAR, 7Z, TAR, GZ, and BZ2.

	// Supports converting documents between Word, Excel, PowerPoint, Project, Images, Web, Email, Metafiles and Diagram file formats.
	// Supported file formats: https://docs.groupdocs.com/conversion/net/supported-document-formats/

	//For Excel to PDF conversion in .NET
	// Instantiate PdfConvertOptions class and call Convert method for Excel Workbook to PDF conversion
	using (var converter = new GroupDocs.Conversion.Converter("sample.xlsx"))
	{
	var options = new PdfConvertOptions();
	converter.Convert("converted.pdf", options);
	}

	//For Excel to HTML conversion in .NET
	// Instantiate MarkupConvertOptions class and call Convert method for Excel Workbook to HTML conversion
	using (var converter = new GroupDocs.Conversion.Converter("sample.xlsx"))
	{
	var options = new MarkupConvertOptions();
	converter.Convert("converted.html", options);
	}

	//For Excel to Word documents conversion in .NET
	// Instantiate WordProcessingConvertOptions class and call Convert method for Excel Workbook to Word conversion
	using (var converter = new GroupDocs.Conversion.Converter("sample.xlsx"))
	{
	var options = new WordProcessingConvertOptions();
	converter.Convert("converted.docx", options);
	}

	//For Excel to PowerPoint Conversion in .NET
	// Instantiate PresentationConvertOptions class and call Convert method for Excel Workbook to PowerPoint conversion
	using (var converter = new GroupDocs.Conversion.Converter("sample.xlsx"))
	{
	var options = new PresentationConvertOptions();
	converter.Convert("converted.pptx", options);
	}

view raw excel-to-pdf-word-html-powerpoint-conversion.cs hosted with ❤ by GitHub

Convert XLS to ODS with Watermarks

Accurately convert XLS to ODS exactly as the original source file and apply text or image watermarks to ODS pages using C# .NET.

Create Converter object to convert XLS document
Create new instance of WatermarkOptions class
Specify watermark properties (color, width, text, image etc)
Instantiate the proper ConvertOptions class
Set Watermark property of the ConvertOptions instance
Call Convert method of Converter class instance for conversion to ODS

Extract XLS Document Information

Discover valuable file-format specific information using the document information extraction feature. Obtain basic details from the source document file (XLS) and extract additional data, including project start and end dates from Microsoft Project files, printing restrictions from PDF documents, and a list of enclosed folders from Outlook data files.

Easily convert popular document file formats across various operating systems including Windows, Linux, and macOS. Seamlessly utilize platforms such as Windows Azure, Mono, and Xamarin for efficient document conversions.

	// Supports converting documents and adding watermarks to 100+ file formats including Word, Excel, PowerPoint, Project, Images, Web, Email, Metafiles and Diagrams
	// Supported file formats: https://docs.groupdocs.com/conversion/net/supported-document-formats/
	using (Converter converter = new Converter("input.docx"))
	{
	WatermarkOptions watermark = new WatermarkOptions
	{
	Text = "Sample watermark",
	Color = Color.Red,
	Width = 100,
	Height = 100,
	Background = true
	};

	PdfConvertOptions options = new PdfConvertOptions
	{
	Watermark = watermark
	};

	converter.Convert("output.pdf", options);
	}

view raw convert-word-to-pdf-and-add-text-watermark-to-converted-pdf.cs hosted with ❤ by GitHub

Convert JSON File to XLS in .NET

Converting a JSON file to XLS in .NET is now easier with Conholdate.Total for .NET APIs. Easily leverage JSON files as data sources and precisely convert them to Excel spreadsheet format (XLS) using just a few lines of C# code, all without the need for external software.

Create Converter object to convert JSON file
Instantiate SpreadsheetConvertOptions class
Call Convert method of Converter class instance for conversion to XLSX

Remote XLS Conversion Simplified

With Conholdate.Total for .NET, developers can follow a simple method to load and convert XLS documents from remote locations and cloud-based document storage resources. Supported sources include Amazon S3, Microsoft Azure Blob, FTP, local disk, stream, and simple URLs. By specifying the appropriate method to obtain the remotely located document stream, programmers can easily pass it on to the Converter class as a constructor, enabling seamless conversion capabilities.

The Conholdate.Total for .NET APIs seamlessly integrate with various application types based on the .NET Framework 2.0 or later, including Windows Forms, ASP.NET, WPF, and WCF. Enjoy the native compatibility and leverage the APIs’ functionality within your preferred .NET application environment.

	// Supports converting documents between Word, Excel, PowerPoint, Project, Images, Web, Email, Metafiles and Diagram file formats.
	// Supported file formats: https://docs.groupdocs.com/conversion/net/supported-document-formats/
	using (Converter converter = new Converter("data.json"))
	{
	SpreadsheetConvertOptions options = new SpreadsheetConvertOptions();
	converter.Convert("converted.xlsx", options);
	}

view raw json-to-excel-spreadsheet-conversion.cs hosted with ❤ by GitHub

Frequently Asked Questions (FAQs)

Can I convert XLS files to ODS online without paying anything?

Yes. You can easily convert XLS files to ODS online using our completely free converter. It requires no software installation or user registration—just upload your file, convert and download your ODS.

How do I convert XLS files to ODS using C# code?

Converting XLS files to ODS using C# is straightforward with the Conholdate.Total for .NET APIs. We provide practical, ready-to-use code samples and clear documentation to simplify the integration into your applications.

Do I need to have Microsoft XLS installed to perform XLS-to-ODS conversions with C#?

No. you don’t need Microsoft XLS installed. Conholdate.Total APIs operate independently, allowing you to convert XLS documents directly to ODS format within your .NET applications without XLS itself.

How quickly does your online XLS-to-ODS converter work?

Our online converter is built for speed and efficiency. Most conversions take just a few seconds—even when dealing with larger or more complex XLS files.

Will the online converter preserve formulas and hyperlinks from my XLS files?

Our online XLS-to-ODS converter keeps all your hyperlinks, images, charts and formatting intact. However, XLS formulas are converted into their resulting values in the final ODS, ensuring an accurate and readable document.

Can I automate the XLS-to-ODS conversion on my own servers?

Definitely! You can automate the XLS-to-ODS conversion process using Conholdate.Total for .NET. It’s perfect for handling batch jobs, scheduled conversions, or integrating seamlessly into your backend workflows.

Is it safe to upload my XLS files for online ODS conversion?

Your security and privacy are extremely important to us. Uploaded files are securely processed and automatically deleted from our servers shortly afterward, ensuring your data remains confidential.

Can I convert several XLS sheets into a single ODS using C#?

Yes. you can. Conholdate.Total allows you to select and combine multiple sheets from your XLS workbook into a single ODS document effortlessly.

Does Conholdate.Total for .NET support batch XLS files conversion to other formats?

Yes. Conholdate.Total for .NET supports batch conversion of XLS documents, allowing developers to convert multiple files at once.

Does the XLS to ODS API work with .NET Core, .NET 5 and newer versions?

Absolutely. Our XLS-to-ODS conversion API supports all modern .NET frameworks, including .NET Core, .NET 5, .NET 6, and even .NET 7. This gives you flexibility regardless of your project environment.

Can I add watermarks or passwords to ODSs created from XLS files?

Yes. Conholdate.Total provides convenient features to enhance your ODS documents. You can add watermarks for branding or confidentiality, apply password protection, and even customize other ODS security settings easily during the conversion process.

What file formats for documents and images are supported by Conholdate.Total for .NET?

Conholdate.Total for .NET integrates APIs from Aspose and GroupDocs to enable .NET programmers to perform various document manipulation actions on a wide range of file formats including Word, Excel, PDF, PowerPoint, Visio, HTML and images in .NET, C#, ASP.NET and VB.NET applications.

Can I convert password-protected XLS files to ODS in .NET?

Yes. Conholdate.Total for .NET supports the conversion of password-protected XLS files. With built-in methods to handle encrypted documents, you can securely convert sensitive files to ODS while preserving their confidentiality and integrity.

What are the licensing costs for Conholdate.Total’s XLS to ODS conversion API?

Conholdate.Total for .NET offers a fully functional free trial version for 30 days. Paid plans are available for higher usage levels. Developers should carefully review the pricing and licensing terms before using the document conversion API.

What is XLS file format?

The XLS file format is a file format used by Microsoft Excel, an application for spreadsheet and graphing. It is an updated version of the XLS file format that was introduced in Excel 97. The XLS file format is a spreadsheet format and can be used to store data in cells arranged in a tabular format. It can be used to create charts and graphs, along with other features such as formulas, variables and macros.

XLS files can be protected with passwords and encryption, allowing users to protect sensitive data. They also support multiple sheets, so they can contain large amounts of data. XLS files can be opened and read by a wide variety of software, including Microsoft Excel and other spreadsheet applications.

XLS files are compatible with a variety of operating systems and devices, making them a popular choice for storing, sharing and transferring data. They are usually used for data analysis, report-building, simulations and other business operations.

XLS files are also used for statistical analysis. They are used to visually display data in the form of charts, graphs and tables. They can also be used to store and analyze large amounts of data.

Overall, the XLS file format is an important file format used for storing and sharing data. It is used for data storage, analysis and report-building. It is compatible with a variety of different operating systems and devices, making it a popular choice for businesses.

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What is ODS file format?

The ODS file format, short for OpenDocument Spreadsheet, is an open standard file format used for storing spreadsheet data. It is part of the OpenDocument format (ODF) family, which is an international standard for office documents. ODS files are typically associated with spreadsheet software like LibreOffice Calc and Apache OpenOffice Calc.

ODS files store spreadsheet data in a structured manner, including worksheets, cells, formulas, formatting, and other spreadsheet elements. They can contain multiple sheets within a single file, allowing for complex and organized data structures. ODS files are saved in a compressed ZIP archive format, which makes them smaller in size and easier to share or store.

One of the main advantages of the ODS format is its openness and compatibility. Being an open standard, ODS files can be opened and edited by a wide range of spreadsheet applications that support the OpenDocument format. This ensures interoperability between different software and reduces the risk of data loss or format incompatibility.

ODS files offer features similar to proprietary spreadsheet formats, such as XLSX, including support for formulas, charts, conditional formatting, and data validation. They also support exporting to other common formats like CSV, PDF, and HTML.

To create an ODS file, you can use spreadsheet software like LibreOffice Calc or Apache OpenOffice Calc, which provide native support for saving files in the ODS format. To open an ODS file, you can use any spreadsheet software that supports the OpenDocument format or import the file into a compatible application.

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