{"id":901,"date":"2024-05-22T10:08:16","date_gmt":"2024-05-22T10:08:16","guid":{"rendered":"http:\/\/localhost:10003\/?post_type=product&#038;p=901"},"modified":"2026-08-18T11:10:01","modified_gmt":"2026-08-18T15:10:01","slug":"cahiers-dexercices-pour-le-net","status":"publish","type":"product","link":"https:\/\/xceed.com\/fr\/products\/net\/workbooks-for-net\/","title":{"rendered":"Workbooks pour .NET"},"content":{"rendered":"\t\t<div data-elementor-type=\"product-post\" data-elementor-id=\"901\" class=\"elementor elementor-901\" wpc-filter-elementor-widget=\"1\" data-elementor-post-type=\"product\">\n\t\t\t\t<div class=\"elementor-element elementor-element-768f64d4 e-flex e-con-boxed e-con e-parent\" data-id=\"768f64d4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-643cad3e elementor-widget elementor-widget-text-editor\" data-id=\"643cad3e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Xceed Workbooks for .NET is an Excel library for .NET that creates, reads and edits Microsoft Excel .xlsx files from C# and VB.NET code.<\/strong> It writes the Office Open XML format directly. Therefore it never needs Excel, Office or COM Interop on the machine that runs it. As a result, it works on web servers, inside Docker containers and in CI pipelines where installing Excel is not an option.<\/p>\n<ul>\n<li><strong>No Excel or Office install required<\/strong>, and no COM Interop anywhere in the stack.<\/li>\n<li><strong>Runs on .NET Framework 4.0 and up<\/strong>, plus .NET 5, 6, 7, 8 and 9.<\/li>\n<li><strong>Cross-platform on .NET 5 and later<\/strong>: Windows, Linux and macOS, with Linux native assets included.<\/li>\n<li><strong>100% managed C#<\/strong>, CLS compliant, with no unsafe code blocks.<\/li>\n<li><strong>Shares its API design with Xceed Words for .NET<\/strong>, so both libraries feel familiar.<\/li>\n<\/ul>\n<p><strong>Want to see it run first?<\/strong> The <a href=\"https:\/\/demo.xceed.com\/workbooks\" rel=\"noopener\">live Xceed Workbooks for .NET demo<\/a> opens in your browser, and the 45-day trial below needs no credit card.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a1 elementor-widget elementor-widget-heading\" data-id=\"xc186a1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Create an Excel file in C# in about twenty lines<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a2 elementor-widget elementor-widget-text-editor\" data-id=\"xc186a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The API mirrors the shape of an Excel workbook, so the code reads much like the document it produces. First you create a workbook, then you write values into cells, and finally you save. This example builds a small sales sheet, adds a real Excel table and calculates a formula.<\/p>\n<pre class=\"xc-code-block\"><code><span class=\"xc-k\">using<\/span> <span class=\"xc-t\">Xceed<\/span>.Workbooks.NET;\n\n<span class=\"xc-c\">\/\/ Apply your trial or purchased key once, at application startup.<\/span>\n<span class=\"xc-t\">Licenser<\/span>.LicenseKey = <span class=\"xc-s\">\"your-license-key\"<\/span>;\n\n<span class=\"xc-k\">using<\/span>( <span class=\"xc-k\">var<\/span> workbook = <span class=\"xc-t\">Workbook<\/span>.Create( <span class=\"xc-s\">\"SalesReport.xlsx\"<\/span> ) )\n{\n  <span class=\"xc-k\">var<\/span> sheet = workbook.Worksheets[ <span class=\"xc-n\">0<\/span> ];\n  sheet.Name = <span class=\"xc-s\">\"Q1 Sales\"<\/span>;\n\n  sheet.Cells[ <span class=\"xc-s\">\"A1\"<\/span> ].Value = <span class=\"xc-s\">\"Region\"<\/span>;\n  sheet.Cells[ <span class=\"xc-s\">\"B1\"<\/span> ].Value = <span class=\"xc-s\">\"Revenue\"<\/span>;\n\n  sheet.Cells[ <span class=\"xc-s\">\"A2\"<\/span> ].Value = <span class=\"xc-s\">\"North America\"<\/span>;\n  sheet.Cells[ <span class=\"xc-s\">\"B2\"<\/span> ].Value = <span class=\"xc-n\">128400d<\/span>;\n  sheet.Cells[ <span class=\"xc-s\">\"A3\"<\/span> ].Value = <span class=\"xc-s\">\"Europe\"<\/span>;\n  sheet.Cells[ <span class=\"xc-s\">\"B3\"<\/span> ].Value = <span class=\"xc-n\">96750d<\/span>;\n\n  sheet.Cells[ <span class=\"xc-s\">\"A5\"<\/span> ].Value = <span class=\"xc-s\">\"Total\"<\/span>;\n  sheet.Cells[ <span class=\"xc-s\">\"B5\"<\/span> ].Formula = <span class=\"xc-s\">\"=SUM(B2:B3)\"<\/span>;\n\n  <span class=\"xc-c\">\/\/ Turn the range into a genuine Excel table, not just formatted cells.<\/span>\n  sheet.Tables.Add( <span class=\"xc-s\">\"SalesTable\"<\/span>, <span class=\"xc-s\">\"A1\"<\/span>, <span class=\"xc-s\">\"B3\"<\/span>, <span class=\"xc-t\">TableStyle<\/span>.TableStyleMedium9, <span class=\"xc-k\">true<\/span> );\n\n  workbook.CalculateFormulas();\n  workbook.Save();\n}\n<\/code><\/pre>\n<p>Reading an existing file follows the same pattern. You call <em>Workbook.Load<\/em> instead of <em>Workbook.Create<\/em>, change what you need, then call <em>SaveAs<\/em> to write a new copy. Because Workbook implements IDisposable, the using block closes the file for you.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f45cb7 elementor-widget elementor-widget-heading\" data-id=\"3f45cb7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Complete control over cells, tables and formulas<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-33b4342 elementor-widget elementor-widget-text-editor\" data-id=\"33b4342\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Xceed Workbooks for .NET gives your application direct control over the contents of an .xlsx document. You can edit cell values, resize rows and columns, build formatted tables, and set formulas that the library then calculates. In addition, you can import collections straight into a worksheet with ImportData, add pictures and hyperlinks, and merge cell ranges.<\/p>\n<p>Formatting works the same way. You can style cells, rows and columns with fonts, colours, alignments and number formats. Furthermore you can apply conditional formatting, add data validation rules, adjust the sheet view, and set the page layout for printing. Finally, you can protect a workbook or a single worksheet with a password.<\/p>\n<p>Worksheet management is equally direct. You can add, insert, copy, move, hide or remove worksheets, and you can copy sheets between two different workbooks.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f31f9fd elementor-widget elementor-widget-heading\" data-id=\"f31f9fd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Use Excel itself as your reporting template engine<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-401e4b8 elementor-widget elementor-widget-text-editor\" data-id=\"401e4b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>An Excel library for .NET can replace a reporting engine outright. Most reporting tools ask your team to learn a custom designer. Xceed Workbooks for .NET takes the opposite approach. Instead, you design the report in Excel, where your finance and operations colleagues already work, and then treat that file as a template.<\/p>\n<p>At run time your code loads the template, fills in the data, recalculates the formulas and saves a copy per customer. Because the output is a normal .xlsx file, recipients open it in Excel, Google Sheets or LibreOffice without a viewer or a plugin. Teams commonly use this pattern for invoices, KPI dashboards, quarterly sales reports and data exports.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a3 elementor-widget elementor-widget-heading\" data-id=\"xc186a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Supported .NET versions and platforms<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a4 elementor-widget elementor-widget-text-editor\" data-id=\"xc186a4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Before you pick an Excel library for .NET, check that it covers the frameworks you actually ship on. This one ships two builds in a single NuGet package, so the right assembly resolves automatically for your target framework.<\/p>\n<figure class=\"wp-block-table xc-tablewrap\"><table class=\"xc-table\">\n<thead><tr><th scope=\"col\">Target<\/th><th scope=\"col\">Supported<\/th><th scope=\"col\">Notes<\/th><\/tr><\/thead>\n<tbody>\n<tr><td>.NET Framework 4.0 and up<\/td><td>Yes<\/td><td>Windows. Uses the net40 build.<\/td><\/tr>\n<tr><td>.NET 5, 6, 7, 8 and 9<\/td><td>Yes<\/td><td>Windows, Linux and macOS. Uses the net5.0 build.<\/td><\/tr>\n<tr><td>ASP.NET and ASP.NET Core<\/td><td>Yes<\/td><td>Server-side generation needs no Office install.<\/td><\/tr>\n<tr><td>Docker and Linux containers<\/td><td>Yes<\/td><td>Linux native drawing assets ship in the package.<\/td><\/tr>\n<tr><td>C#, VB.NET and Managed C++<\/td><td>Yes<\/td><td>CLS compliant, so every .NET language works.<\/td><\/tr>\n<tr><td>Microsoft Excel installed<\/td><td>Not required<\/td><td>The library writes Open XML directly.<\/td><\/tr>\n<\/tbody>\n<\/table><\/figure>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a5 elementor-widget elementor-widget-heading\" data-id=\"xc186a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How it compares with Excel Interop and free libraries<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a6 elementor-widget elementor-widget-text-editor\" data-id=\"xc186a6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Developers usually arrive here after hitting a wall with one of two alternatives. The table below sets out the practical differences.<\/p>\n<figure class=\"wp-block-table xc-tablewrap\"><table class=\"xc-table\">\n<thead><tr><th scope=\"col\">Approach<\/th><th scope=\"col\">Needs Excel installed<\/th><th scope=\"col\">Safe on a server<\/th><th scope=\"col\">Commercial support<\/th><\/tr><\/thead>\n<tbody>\n<tr><td><strong>Xceed Workbooks for .NET<\/strong><\/td><td>No<\/td><td>Yes<\/td><td>Yes, with a 1-year priority support subscription<\/td><\/tr>\n<tr><td>Microsoft Excel COM Interop<\/td><td>Yes<\/td><td>No. Microsoft advises against server-side use<\/td><td>Through an Office licence only<\/td><\/tr>\n<tr><td>Open-source .xlsx libraries<\/td><td>No<\/td><td>Yes<\/td><td>Community forums, with no service level<\/td><\/tr>\n<\/tbody>\n<\/table><\/figure>\n<p>Interop also routes every call through a desktop application, so throughput drops sharply under load. A managed Excel library for .NET avoids that bottleneck entirely, which keeps generation predictable on a busy server.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a7 elementor-widget elementor-widget-heading\" data-id=\"xc186a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Frequently asked questions<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a8 elementor-widget elementor-widget-text-editor\" data-id=\"xc186a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3 class=\"xc-faq-q\">Do I need Microsoft Excel installed to use Xceed Workbooks for .NET?<\/h3>\n<p>No. Xceed Workbooks for .NET writes the Office Open XML .xlsx format directly, so it needs no Excel installation, no Office licence and no COM Interop on the machine that runs your code. Consequently you can generate spreadsheets on a web server or inside a container.<\/p>\n<h3 class=\"xc-faq-q\">Which .NET versions does Xceed Workbooks for .NET support?<\/h3>\n<p>The package targets .NET Framework 4.0 and up as well as .NET 5.0 and up, which covers .NET 5, 6, 7, 8 and 9. It also works with ASP.NET and ASP.NET Core, and it supports C#, VB.NET and Managed C++.<\/p>\n<h3 class=\"xc-faq-q\">Does Xceed Workbooks for .NET run on Linux and in Docker?<\/h3>\n<p>Yes, on .NET 5 and later. The package depends on Xceed.Drawing.NET, which ships SkiaSharp Linux native assets, so drawing and image support work inside Linux containers without extra system packages.<\/p>\n<h3 class=\"xc-faq-q\">Can it read and edit an existing Excel file, or only create new ones?<\/h3>\n<p>It does both. Call Workbook.Load to open an existing .xlsx file, modify cells, tables, formulas or formatting, then call Save or SaveAs. Many teams use this to populate a spreadsheet that a colleague designed in Excel.<\/p>\n<h3 class=\"xc-faq-q\">Does Xceed Workbooks for .NET calculate Excel formulas?<\/h3>\n<p>Yes. You assign a formula through the Formula property on a cell, then call CalculateFormulas on the workbook or the worksheet. The library evaluates the supported formulas and stores the results in the saved file.<\/p>\n<h3 class=\"xc-faq-q\">How much does Xceed Workbooks for .NET cost, and is there a free trial?<\/h3>\n<p>A free 45-day trial is available and needs no credit card. Paid subscriptions begin with the Small Business licence for companies under 1 million USD in annual revenue, followed by the Standard licence and the Blueprint licence, which adds full source code.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0a9a7c6 elementor-widget elementor-widget-heading\" data-id=\"0a9a7c6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Created by the Xceed Words for .NET team<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-28b5b88 elementor-widget elementor-widget-text-editor\" data-id=\"28b5b88\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The team behind Xceed Words for .NET builds this library too, so it inherits years of work on Open XML documents. Xceed shipped the first release in 2021 and has followed a regular release cadence since then. You can review every build, together with its release notes, in the Product Updates section below.<\/p>\n<p>Requests from subscribers drive much of the roadmap. If something you need is missing, the support forums are the fastest route to getting it considered.<\/p>\n<p><span style=\"text-decoration: underline;\">Note that there is no refund for this product.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-xc186a9 elementor-widget elementor-widget-html\" data-id=\"xc186a9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<style id=\"xc-wb-enhance\">\n.xc-code-block{background:#1e1e2e;color:#e6e6f0;border-radius:8px;padding:20px 22px;overflow-x:auto;margin:0 0 1.25em;border:1px solid #33334d}\n.xc-code-block code{font-family:Consolas,\"Cascadia Mono\",Monaco,monospace!important;font-size:14px!important;line-height:1.65!important;background:none!important;color:inherit!important;padding:0!important;white-space:pre;display:block}\n.xc-code-block .xc-c{color:#7f849c;font-style:italic}\n.xc-code-block .xc-k{color:#89b4fa}\n.xc-code-block .xc-s{color:#a6e3a1}\n.xc-code-block .xc-t{color:#f9e2af}\n.xc-code-block .xc-n{color:#fab387}\n.xc-tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch;max-width:100%;margin:0 0 1.25em}\n.xc-table{width:100%;min-width:540px;border-collapse:collapse;margin:0;font-size:15px}\n.xc-table th,.xc-table td{border:1px solid #dcdce6;padding:10px 14px;text-align:left;vertical-align:top}\n.xc-table thead th{background:#f4f4f8;font-weight:600}\n.xc-table tbody tr:nth-child(even){background:#fafafc}\n.xc-faq-q{font-size:19px;font-weight:600;margin:1.35em 0 .4em}\n@media (prefers-color-scheme:dark){.xc-table th,.xc-table td{border-color:#3a3a4a}.xc-table thead th{background:#26262f}.xc-table tbody tr:nth-child(even){background:#1f1f27}}\n<\/style>\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Do I need Microsoft Excel installed to use Xceed Workbooks for .NET?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Xceed Workbooks for .NET writes the Office Open XML .xlsx format directly, so it needs no Excel installation, no Office licence and no COM Interop on the machine that runs your code. 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