High-Speed C# .NET Excel Spreadsheet API Library

Seamlessly import and export Excel-compatible XLSX, XLTX, XLSM files with no Excel dependency, with all formulas, formatting, and other settings.

Export Excel .xlsx spreadsheets to PDF at server side with various PDF options, including security settings and embedded form controls with HTML5 tags for autocomplete.

Export a worksheet, cell range, shape, or chart to an image file on the server side in your application with various Image save options.

DsExcel .NET introduces new Templates Support with comprehensive syntax and API to easily bind Excel documents to data and generate advanced and complex custom Excel reports.

DsExcel .NET supports one-way data binding with a cell, a worksheet, and Table binding to .NET data sources to easily fill in your data automatically.

Import just the data from a specified range in an Excel file without loading the whole object model.

Seamless import and export of new SpreadJS file format (.sjs) to Excel files using .NET and various Open/Save options available.

Import data from different type of data sources including object collections and data tables.

Create AcroForm fields, including HTML5 autocomplete types, to submit data forms to a server, import XML data, and import form data submitted on the client to a PDF.

Export Excel .xlsx spreadsheets to PDF at server side with various PDF options, including security settings and embedded form controls with HTML5 tags for autocomplete.

Get and set Page Setup attributes (left margin, bottom margin, paper size, and so on) on Excel workbook and import/export in XLSX and/or print to PDF or directly to a printer in Windows.

DsExcel .NET introduces new Templates Support with comprehensive syntax and API to easily bind Excel documents to data and generate advanced and complex custom Excel reports.

Programmatically set three predefined Workbook views, Normal, Page Layout, and Page Break Preview, which take effect on loading in Excel.

Directly print Excel file to printer using interfaces IWorkbook.PrintOut and PrintOutOptions (supported in Windows environments only).

Use hundreds of built-in functions and operators to perform complex calculations, add external formulas, or build your own custom functions and create what you need.

Use 7 new Dynamic Array Formula functions and the new '#' operator to pass and return multiple values from functions and spill results in a range of cells.

Custom functions allow you to easily create new calculation functions for use in cell formulas using custom logic to return a value in your .NET app.

Create, parse and modify formulas with  GrapeCity.Document.Excel.Expression namespace to parse the formula expressions.

Use absolute or relative structured references in formulas to reference to table cells for formulas that are more intuitive and easier to understand.

Use the new method GenerateGetPivotDataFunction from IRange interface to generate formulas using the GETPIVOTDATA function to get pivot table values.

Programmatically add What-If Analysis features like Goal seek and scenarios to spreadsheets. 

A linked picture (also knows as Camera Shape) can be created using a reference to the actual data, table, or chart in your final dashboard.

Trace the formula references in your worksheet to find the Dependent and Precedent cells and automate your formula auditing to ensure calculation accuracy.

Ignore range errors in Excel and hide the annoying green triangle.

Programmatically modify the Excel’s mode of calculation to Automatic, Partial, or Manual.

Create, import, export, use passwords, add sheets, cut and copy ranges, copy and move worksheets, activate, configure, delete, protect, and add iterative calculations.

Apply rich text formatting using the IRichText interface including multiple font styles, colors, sizes, subscript and superscript text in the cells of the worksheet.

DsExcel introduces new Templates Support with comprehensive syntax and API to easily bind Excel documents to data and generate advanced and complex custom Excel reports.

DsExcel API lets you apply built-in or custom Office themes to change the appearance of a workbook by replacing the colors and styles in one quick and easy operation.

Create conditional formatting rules for individual cells or a range of cells based on cell values or a custom formula, including data bars, color scales, and icon sets.

Validate data by restricting the format and values that can be entered in cells of a worksheet, or create a drop-down list for the cell.

Get and set all style, formula, and other settings on cells, rows or columns in .NET Excel documents with the help of Range property of the IWorksheet interface.

DsExcel provides many style, border, and format properties to customize the appearance of a range in your .NET Excel spreadsheet.

Manage Tables independently in Excel worksheets, format rows & columns, include totals row, and perform calculations using structured table column references.

Use linear and gradient brushes and pattern fills with Shapes and Pictures in Excel workbooks for reporting, data visualization, and more.

DsExcel provides a comprehensive charting API to add all types of charts in Excel worksheets, including support for advanced template reporting and data binding.

Embed Shapes and Pictures in a worksheet. You can insert arrows, lines, charts, slicers, pictures, general shapes and connectors, and group shapes.

Add a picture to a worksheet using the AddPicture method of the worksheet's Shapes collection, or delete, cut, copy and duplicate pictures in the worksheet.

DsExcel introduces new Templates Support with comprehensive syntax and API to easily bind to Images and generate advanced and complex custom Excel reports.

A linked picture (also known as Camera Shape) can be created using a reference to the actual data, table, or chart in your final dashboard.

DsExcel supports 11 types of barcodes that can be added using a simple formula. Convert the formula result to picture using ConvertBarcodeToPicture() method.

Create, import, export, use passwords, add sheets, cut and copy ranges, copy and move worksheets, activate, configure, delete, protect, and add iterative calculations.

DsExcel introduces new Templates Support with comprehensive syntax and API to easily bind Excel documents to data and generate advanced and complex custom Excel reports.

Create AcroForm fields, including HTML5 autocomplete types, to submit data forms to a server, import XML data, and import form data submitted on the client to a PDF.

Get and set all style, formula, and other settings on cells, rows or columns in .NET Excel documents with the help of Range property of the IWorksheet interface.

DsExcel provides many style, border, and format properties to customize the appearance of a range in your .NET Excel spreadsheet.

Use 7 new Dynamic Array Formula functions and the new '#' operator to pass and return multiple values from functions and spill results in a range of cells.

Manage Tables independently in Excel worksheets, format rows & columns, include totals row, and perform calculations using structured table column references.

Add Pivot Table to Excel workbook for data summarization and aggregation, to automatically count, total, or average the data stored in a spreadsheet.

Create conditional formatting rules for individual cells or a range of cells based on cell values or a custom formula, including data bars, color scales, and icon sets.

Summarize large amounts of information in groups of columns and/or rows that expand and collapse so that complex spreadsheets are easier to navigate.

Apply rich text formatting using the IRichText interface including multiple font styles, colors, sizes, subscript and superscript text in the cells of the worksheet.

Validate data by restricting the format and values that can be entered in cells of a worksheet, or create a drop-down list for the cell.

Find and Replace text or formulas in a worksheet with various options including case, whole or partial match, match byte, replace format, search format, and more.

DsExcel supports all types of filters including Date, Text, Number, Color, Icon, and more in tables or on a range using a worksheet range filter.

DsExcel supports one-way data binding with a cell, a worksheet, and Table binding to .NET data sources to easily fill in your data automatically.

DsExcel provides the Sort method to perform data sorting on a range of cells by value, color, or icon, and supports sorting by column or row in a worksheet.

Slicers are visual filters that you can use to filter a table or pivot table. Add built-in and custom slicer styles in Excel workbooks to create interactive reports.

DsExcel enables users to write Comments for cells to add metadata information about the data it contains, which can show as a popup or sticky note.

Link to a cell location in a worksheet, a web page, an external file, or an email address using a Hyperlink in a cell or shape to create a table of contents and more.

DsExcel API lets you apply built-in or custom Office themes to change the appearance of a workbook by replacing the colors and styles in one quick and easy operation.

Add, reply, and delete Threaded Comments, as well as move to next comment, move to previous comment and many more such operations.

DsExcel introduces new Templates Support with comprehensive syntax and API to easily bind Excel documents to data and generate advanced and complex custom Excel reports.

Create AcroForm fields, including HTML5 autocomplete types, to submit data forms to a server, import XML data, and import form data submitted on the client to a PDF.

Add Pivot Table to Excel workbook for data summarization and aggregation, to automatically count, total, or average the data stored in a spreadsheet.

Custom functions allow you to easily create new calculation functions for use in cell formulas using custom logic to return a value in your .NET app.

Use 7 new Dynamic Array Formula functions and the new '#' operator to pass and return multiple values from functions and spill results in a range of cells.

Create, parse, and modify formulas with GrapeCity.Documents.Excel.
Expressions namespace to parse the formula expressions.

DsExcel provides a comprehensive charting API to add all types of charts in Excel worksheets, including support for advanced template reporting and data binding.

Export Excel .xlsx spreadsheets to PDF at server side with various PDF options, including security settings and embedded form controls with HTML5 tags for autocomplete.

A linked picture (also knows as Camera Shape) can be created using a reference to the actual data, table, or chart in your final dashboard.

See how to use DsExcel on the server side to import/export Excel template files with SpreadJS as a viewer or editor in the browser (client side).

DsExcel supports SpreadJS features, adding more compatibility with the client-side SpreadJS product. View the complete supported features list here.