.NET Core Excel framework is a high-performance and feature-rich to work with Microsoft Excel. This framework has an Excel creation and editing library that allows you to create, read, and edit Microsoft Excel files in any .NET application. It offers Excel-inspired spreadsheet UI controls to create, edit, view, and format Excel documents. Its powerful conversion APIs make it easy to convert Excel files to HTML, images, and more.
There are no distribution fees, per-server licensing fees, or royalties, which makes Excel Library very cost-effective.
It is optimized for usage in a server environment where speed and low memory usage are critical.
All the elements in a typical Excel document such as text, formatting, images, shapes, and tables are accessible through a comprehensive set of APIs.
Over more than 15 years, Syncfusion’s Excel Library (Essential XlsIO) has become a mature and proven product.
The Syncfusion’s Excel Library comes with extensive documentation, knowledge bases, and samples.
Use a single API across all platforms.
Syncfusion's Excel Library (Essential XlsIO) is a high-performance .NET Core Excel library that allows users to create, read, edit, and protect Excel documents in .NET Core applications without Microsoft Office or interop dependencies.
Import data from various data sources, collection objects, and HTML tables. Also, export data to data tables, collection objects, and nested classes.
Excel Library supports 80+ charts to visualize data. Similarly, sparklines are supported to visualize data within a cell.
More than 400 Excel functions are supported to evaluate formula cells quickly. Add-in functions, external formulas, and an array of formulas are also supported.
Import data to Excel worksheets like mail merge in a Word document. Customized data importing is also supported.
Use various cell and text formatting options along with advanced conditional formatting features to modify the appearance of the data.
Perform various kinds of data processing such as data validation, sorting, and filtering.
Pivot tables and pivot charts are widely used in the Spreadsheet control due to their ease-of-use in summarizing data. Syncfusion’s Excel Library allows you to create and edit them with a few lines of code.
Encrypt or decrypt password-protected Excel files. Also, protect the editing of workbooks, worksheets, and cells.
Create and edit various form controls, autoshapes, and comments.
For more information, check out .NET Core Excel Library features.
The Spreadsheet control provides a Microsoft Excel-like control with major features of Microsoft Excel,
including editing, formulas, charting, importing, and exporting.
Open and save large Excel files in less time with minimal memory consumption. Experience smooth scrolling even with many cells in a view.
Import and edit existing Excel files in the Spreadsheet control. Spreadsheets can be exported to XLS, XLSX, CSV, and PDF file formats.
Spreadsheet supports charts and sparklines. Visualize data easily.
More than 400 Excel-compatible functions are supported, such as cross-sheet references, named ranges, table formulas, and formulas.
The Spreadsheet control provides a variety of text and number formatting options along with conditional formatting to improve the appearance and effectiveness of spreadsheet.
The Spreadsheet control supports on-demand data loading when bound to data sources. It improves initial loading time by requesting only the visible data from the data source.
For more information, check out our ASP.NET Core Spreadsheet control features.
Convert an Excel workbook or worksheet to PDF format. Use various customization options, like embedding fonts, ignoring empty pages or worksheets, showing or hiding headers, and footers.
Worksheets can be converted to BMP, JPEG, PNG, and other image formats, with content such as data, formatting, charts, tables, and shapes.
Convert spreadsheet data to CSV and TSV formats to generate, lightweight reports.
Dynamically render an Excel workbook or worksheet as an HTML file.
Save Excel files in ODS formats to use in applications like OpenOffice and Google Sheets.
SpreadsheetML is easy to work with and designed to be human readable and editable. Convert Excel files to SpreadsheetML using Syncfusion’s Excel Library.
Convert an Excel workbook or worksheet to JSON file in schema and non-schema formats.
Easily get started with the .NET Core Excel Framework using a few simple lines of C# code example as demonstrated below. Also explore our .NET Core Excel Library Example that shows you how to render and configure the .NET Core Excel.
//New instance of ExcelEngine is created //Equivalent to launching Microsoft Excel with no workbooks open //Instantiate the spreadsheet creation engine ExcelEngine excelEngine = new ExcelEngine(); //Instantiate the Excel application object IApplication application = excelEngine.Excel; //Assigns default application version application.DefaultVersion = ExcelVersion.Excel2013; //A existing workbook is opened. string basePath = _hostingEnvironment.WebRootPath + @"\XlsIO\Sample.xlsx"; FileStream sampleFile = new FileStream(basePath, FileMode.Open); IWorkbook workbook = application.Workbooks.Open(sampleFile); //Access first worksheet from the workbook. IWorksheet worksheet = workbook.Worksheets; //Set Text in cell A3. worksheet.Range["A3"].Text ="Hello World"; //Defining the ContentType for excel file. string ContentType = "Application/msexcel"; //Define the file name. string fileName = "Output.xlsx"; //Creating stream object. MemoryStream stream = new MemoryStream(); //Saving the workbook to stream in XLSX format workbook.SaveAs(stream); stream.Position = 0; //Closing the workbook. workbook.Close(); //Dispose the Excel engine excelEngine.Dispose(); //Creates a FileContentResult object by using the file contents, content type, and file name. return File(stream, ContentType, fileName);
The Syncfusion .NET Core Excel Framework provides the following features:
No, this is a commercial product and requires a paid license. However, a free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.
A good place to start would be our comprehensive getting started documentation.
You can find our Excel Framework demo here.
Syncfusion’s file format components helped me create the reports I needed, fast. – J. Pereira, Software Developer.
Syncfusion File Format Libraries - Manipulate Excel, Word, PowerPoint, and PDF files
Read and write Excel, Word, PDF, and PowerPoint files. Also includes integrated visualization capabilities. Advanced features include support for pivot tables, pivot charts, mail-merge, and extensive formatting.
Greatness—it’s one thing to say you have it, but it means more when others recognize it. Syncfusion is proud to hold the following industry awards.