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Convert ODS File to XLS in C#

The native ODS file conversion API makes it easy to convert ODS to XLS in C#, VB.NET, and ASP.NET applications. It supports highly-accurate conversion of popular Excel worksheet formats to and from Word documents (DOC, DOCX), PowerPoint presentations (PPT,PPTX), PDF, Photoshop (PSD, PSB), eBook (EPUB), web (HTML, XML, JSON) and image file formats (JPG, PNG, BMP, PNG) without using any external tool or a third party API. The advanced ODS document manipulation and conversion features allow you to programmatically add watermarks, select different page numbers or ranges in the source ODS document that you want to convert; customize the appearance of it and save it as XLS document using a few lines of C# code. The online ODS to XLS converter tool is free to use and efficiently showcases the conversion functionality inherited in Conholdate.Total for .NET APIs. No registration required – just upload your ODS file and get your XLS file in seconds.

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Convert ODS to XLS in .NET

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

Free App for ODS to XLS 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);
}

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

Convert your ODS files to other popular documents formats such as PDF, HTML, PowerPoint presentations and Word processing documents using C# .NET code. Load the source ODS 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 ODS 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 XLS 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);
}

Convert ODS to XLS with Watermarks

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

  • Create Converter object to convert ODS 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 XLS

Extract ODS Document Information

Discover valuable file-format specific information using the document information extraction feature. Obtain basic details from the source document file (ODS) 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);
}

Convert JSON File to ODS in .NET

Converting a JSON file to ODS 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 (ODS) 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 ODS Conversion Simplified

With Conholdate.Total for .NET, developers can follow a simple method to load and convert ODS 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);
}

Frequently Asked Questions (FAQs)

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

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

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

Converting ODS files to XLS 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 ODS installed to perform ODS-to-XLS conversions with C#?

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

How quickly does your online ODS-to-XLS 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 ODS files.

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

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

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

Definitely! You can automate the ODS-to-XLS 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 ODS files for online XLS 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 ODS sheets into a single XLS using C#?

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

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

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

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

Absolutely. Our ODS-to-XLS 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 XLSs created from ODS files?

Yes. Conholdate.Total provides convenient features to enhance your XLS documents. You can add watermarks for branding or confidentiality, apply password protection, and even customize other XLS 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 ODS files to XLS in .NET?

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

What are the licensing costs for Conholdate.Total’s ODS to XLS 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 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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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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Popular ODS Conversion Options with .NET

Convert ODS to PDF

(Portable Document Format)

Convert ODS to WORD

(Word Processing Files)

Convert ODS to IMAGE

(Digital Image Files)

Convert ODS to DOC

(Microsoft Word Binary Format)

Convert ODS to DOCX

(Office 2007+ Word Document)

Convert ODS to DOCM

(Microsoft Word 2007 Marco File)

Convert ODS to DOT

(Microsoft Word Template Files)

Convert ODS to DOTX

(Microsoft Word Template File )

Convert ODS to DOTM

(Microsoft Word 2007+ Template File)

Convert ODS to TXT

(Text Document)

Convert ODS to RTF

(Rich Text Format)

Convert ODS to HTML

(Hyper Text Markup Language)

Convert ODS to HTM

(Hypertext Markup Language File)

Convert ODS to MHTML

(Web Page Archive Format)

Convert ODS to MHT

(MHTML Web Archive)

Convert ODS to XLS

(Microsoft Excel Spreadsheet (Legacy))

Convert ODS to XLSX

(Open XML Workbook)

Convert ODS to XLSM

(Macro-enabled Spreadsheet)

Convert ODS to XLSB

(Excel Binary Workbook)

Convert ODS to XLT

(Excel 97 - 2003 Template)

Convert ODS to XLTX

(Excel Template)

Convert ODS to XLTM

(Excel Macro-Enabled Template)

Convert ODS to XLAM

(Excel Macro-Enabled Add-In)

Convert ODS to CSV

(Comma Seperated Values)

Convert ODS to TSV

(Tab Seperated Values)

Convert ODS to DIF

(Data Interchange Format)

Convert ODS to SXC

(StarOffice Calc Spreadsheet)

Convert ODS to FODS

(OpenDocument Flat XML Spreadsheet)

Convert ODS to PPT

(Microsoft PowerPoint 97-2003)

Convert ODS to PPTX

(Open XML presentation Format)

Convert ODS to PPS

(PowerPoint Slide Show)

Convert ODS to PPSX

(PowerPoint Slide Show)

Convert ODS to PPSM

(Macro-enabled Slide Show)

Convert ODS to POT

(Microsoft PowerPoint Template Files)

Convert ODS to POTX

(Microsoft PowerPoint Template Presentation)

Convert ODS to PPTM

(Macro-enabled Presentation File)

Convert ODS to POTM

(Microsoft PowerPoint Template File)

Convert ODS to ODT

(OpenDocument Text File Format)

Convert ODS to OTT

(OpenDocument Standard Format)

Convert ODS to OTP

(OpenDocument Standard Format)

Convert ODS to ODP

(OpenDocument Presentation Format)

Convert ODS to ODS

(OpenDocument Spreadsheet)

Convert ODS to EMZ

(Windows Compressed Enhanced Metafile)

Convert ODS to WMZ

(Compressed Windows Metafile)

Convert ODS to SVG

(Scalar Vector Graphics)

Convert ODS to SVGZ

(Compressed Scalable Vector Graphics)

Convert ODS to XPS

(XML Paper Specifications)

Convert ODS to TEX

(LaTeX Source Document)

Convert ODS to DCM

(DICOM Image)

Convert ODS to WMF

(Windows Metafile)

Convert ODS to EMF

(Enhanced Metafile Format)

Convert ODS to BMP

(Bitmap Image File)

Convert ODS to PNG

(Portable Network Graphic)

Convert ODS to GIF

(Graphical Interchange Format)

Convert ODS to JPEG

(Joint Photographic Expert Group Image)

Convert ODS to JPG

(Joint Photographic Expert Group Image)

Convert ODS to TIFF

(Tagged Image File Format)

Convert ODS to WEBP

(Raster Web Image Format)

Convert ODS to JP2

(JPEG 2000 Core Image)

Convert ODS to TGA

(Truevision Graphics Adapter)

Convert ODS to PSB

(Photoshop Large Document Format)

Convert ODS to PSD

(Photoshop Document)

Convert ODS to EPUB

(Open eBook File)

Convert ODS to MD

(Markdown Language)

Convert ODS to JSON

(JavaScript Object Notation File)

Convert ODS to FODP

(Formula One for Data Presentation)

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