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The ASP.NET Core Spreadsheet (Excel viewer) is a feature-rich control for organizing and analyzing data in tabular format with some cool features similar to Microsoft Excel’s. It provides all the common Excel features, including data binding, selection, editing, formatting, resizing, sorting, importing, and exporting Excel documents.

Data binding

Bind data seamlessly with various local and remote data sources such as JSON, RESTful services, OData services, and WCF services. The control uses a data manager to handle data and supports customizing data requests and processing.

ASP.NET Core Spreadsheet data binding.

High performance

The ASP.NET Core Spreadsheet (Excel like grid) is designed and optimized for high performance in every aspect.

Instant data loading in ASP.NET Core Spreadsheet.

Instant loading

Instant loading allows users to load large amounts of data into a worksheet and view it on demand with the help of row and column virtualization.

Smooth scrolling in ASP.NET Core Spreadsheet.

Smooth scrolling

The ASP.NET Core Spreadsheet control provides a smooth scrolling experience even with many cells in a view.

ASP.NET Core Spreadsheet editing.


In the ASP.NET Core Spreadsheet, data editing allows you to add, edit, and remove formulas or values in a cell. You can edit the contents of a cell directly in the cell or by typing in the formula bar.

Excel-like selection

The ASP.NET Core Spreadsheet widget provides interactive support to highlight cells, rows, columns, and sheets that you select. Selection can be done through mouse, touch, or keyboard interaction.

ASP.NET Core Spreadsheet selection.


The ASP.NET Core Spreadsheet library provides a wide range of formulas with support for cross-sheet references.

ASP.NET Core Spreadsheet built-in formulas.

Built-in functions

The ASP.NET Core Spreadsheet provides a built-in calculation engine, which is suitable for most of your calculations. Spreadsheet also provides an option to create and use your own custom formulas.

ASP.NET Core Spreadsheet dependent cell reference.

Auto calculation

Values are automatically recalculated when a dependent cell is edited.

Number formatting in ASP.NET Core Spreadsheet.

Number formatting

Number formatting provides a type for your data in Spreadsheet. It helps to display your data as currency, percentages, short dates, long dates, time, fractions, and scientific numbers, similar to Excel.

Cell formatting

Using cell formatting, users can highlight a particular cell or range of cells from a whole workbook. The control supports various formatting options: font size, font family, font color, fill color, indent, and horizontal and vertical alignments of text.

Sheet tabs in ASP.NET Core Spreadsheet.

Open and save

Excel and CSV import

The ASP.NET Core Spreadsheet control can load Excel documents initially or open them like an Excel application with data accuracy, styles, and formats. Microsoft Excel (.xlsx), Microsoft Excel 97-2003 (.xls), and comma-delimited values (.csv) file formats can be opened in Spreadsheet.

Excel and CSV export

Easily save the Spreadsheet control with data accuracy, styles, and formats as an Excel file. It supports various file formats such as Microsoft Excel (.xlsx), Microsoft Excel 97-2003 (.xls), and comma-delimited values (.csv).

Sort and filter

  • You can reorganize your data faster by sorting the range of cells in either ascending or descending order. The custom sort option allows you to sort multiple columns.
  • When filtering, if values in one or more columns do not meet the filtering criteria, all the data will be hidden. You can filter text, dates, and numbers.

ASP.NET Core Spreadsheet sorting and filtering.

There is built-in support for hyperlinks and bookmarks. You can navigate to web links or cell references within the sheet or other sheets in the workbook.

Hyperlink in ASP.NET Core Spreadsheet.


The image feature allows users to view, insert, and modify a picture in a spreadsheet with customizing options.

Image in ASP.NET Core Spreadsheet.


The chart feature transforms your Spreadsheet data to an intuitive overview for better understanding.

Chart in ASP.NET Core Spreadsheet.

Ribbon UI

The ASP.NET Core Spreadsheet provides an interactive ribbon that organizes a spreadsheet’s features into a series of tabs. You can collapse the ribbon to make more rows visible in the viewport.

Ribbon in ASP.NET Core Spreadsheet.

Collaborative editing

This feature makes it easy to collaborate on workbooks. It allows multiple users to work on a spreadsheet at the same time and view the changes made by others instantly.

Collaborative editing in ASP.NET Core Spreadsheet.

Interactive features

Clipboard operations in ASP.NET Core Spreadsheet.

Copy to clipboard

Use the clipboard operations cut, copy, and paste, just like in Microsoft Excel. You can paste the values or formulas with or without formatting in a new selected range.

Context menu in ASP.NET Core Spreadsheet.

Context menu

The context menu improves user interaction with Spreadsheet using a pop-up menu. It appears when a cell, row header, column header, or sheet tab is right-clicked. In addition to built-in default menu items, it allows you to add custom context menu items.

Row and column resizing in ASP.NET Core Spreadsheet.

Resize and autofit

The resize and autofit options help you adjust the row height and column width.

Undo and redo in ASP.NET Core Spreadsheet.

Undo and redo

The ASP.NET Core Spreadsheet provides an option to undo and redo changes made in a workbook. You can customize the limit of undo and redo operations.


Keyboard navigation in ASP.NET Core Spreadsheet.

Keyboard navigation

The ASP.NET Core Excel Spreadsheet ensures that every cell is accessible using the keyboard. Major features like selection, clipboard, and editing can be performed using keyboard commands alone; no mouse interaction is required. This helps in creating highly accessible applications using this control.

Accessibility and screen reader support in ASP.NET Core Spreadsheet.

Screen reader

The ASP.NET Core Excel-like grid view has complete WAI-ARIA accessibility support. The Spreadsheet UI includes high-contrast visual elements, helping visually impaired people have the best viewing experience. Also, valid UI descriptions are easily accessible through assistive technologies such as screen readers.

Built-in and customizable themes

Five built-in, SASS-based themes are available: Material, Bootstrap, Bootstrap 4, Fabric, and high contrast. Simplify theme customization either by overriding the existing SASS styling or creating custom themes using the Theme Studio application.

ASP.NET Core Spreadsheet themes.

Globalization and localization

Format dates and numbers in ASP.NET Core Spreadsheet.


The ASP.NET Core Spreadsheet enables users from different locales to use it by formatting the dates, currency, and numbering to suit local preferences. It uses the internalization (i18n) library to handle number formatting.

Show right-to-left language in ASP.NET Core Spreadsheet.

Right to left (RTL)

Right-to-left rendering allows you to display the text and layout of the Spreadsheet from right to left. This improves the user experience and accessibility for RTL languages.

Localize ASP.NET Core Spreadsheet UI strings.


Users can localize all the strings used in the user interface of the ASP.NET Core Spreadsheet control. The control uses the localization (l10n) library to localize UI strings.

Supported browsers

The ASP.NET Core Spreadsheet works well with all modern web browsers: Chrome, Firefox, Edge, Safari, and IE11. It supports IE11 with the help of polyfills.

Supported web browsers for ASP.NET Core Spreadsheet.

Other supported frameworks

Spreadsheet is also available in Angular, React, Vue, and JavaScript frameworks. Check out the different Spreadsheet platforms from the links below,

Developer-friendly APIs

Developers can customize their UI and control its behaviors according to the end user’s requirement using the control’s rich set of client-side APIs.


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