{"id":3210,"date":"2025-10-08T14:54:21","date_gmt":"2025-10-08T14:54:21","guid":{"rendered":"https:\/\/xceed.com\/?p=3210"},"modified":"2026-08-25T14:38:24","modified_gmt":"2026-08-25T18:38:24","slug":"blazor-hot-reload-cycles-de-developpement-rapides-dans-net-9","status":"publish","type":"post","link":"https:\/\/xceed.com\/fr\/blog\/news\/blazor-hot-reload-fast-dev-cycles-in-net-9\/","title":{"rendered":"Blazor Hot Reload : Cycles de d\u00e9veloppement rapides dans .NET 9"},"content":{"rendered":"<h1><h1 style=\"--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x:;--tw-pan-y:;--tw-pinch-zoom:;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position:;--tw-gradient-via-position:;--tw-gradient-to-position:;--tw-ordinal:;--tw-slashed-zero:;--tw-numeric-figure:;--tw-numeric-spacing:;--tw-numeric-fraction:;--tw-ring-inset:;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur:;--tw-brightness:;--tw-contrast:;--tw-grayscale:;--tw-hue-rotate:;--tw-invert:;--tw-saturate:;--tw-sepia:;--tw-drop-shadow:;--tw-backdrop-blur:;--tw-backdrop-brightness:;--tw-backdrop-contrast:;--tw-backdrop-grayscale:;--tw-backdrop-hue-rotate:;--tw-backdrop-invert:;--tw-backdrop-opacity:;--tw-backdrop-saturate:;--tw-backdrop-sepia:;--tw-contain-size:;--tw-contain-layout:;--tw-contain-paint:;--tw-contain-style:\">Pourquoi le Hot Reload de Blazor dans .NET 9 change la donne<\/h1><br><p style=\"--tw-scale-x: 1;--tw-scale-y: 1;--tw-pan-x:;--tw-pan-y:;--tw-pinch-zoom:;--tw-scroll-snap-strictness: proximity;--tw-gradient-from-position:;--tw-gradient-via-position:;--tw-gradient-to-position:;--tw-ordinal:;--tw-slashed-zero:;--tw-numeric-figure:;--tw-numeric-spacing:;--tw-numeric-fraction:;--tw-ring-inset:;--tw-ring-offset-width: 0px;--tw-ring-offset-color: #fff;--tw-ring-offset-shadow: 0 0 #0000;--tw-ring-shadow: 0 0 #0000;--tw-shadow: 0 0 #0000;--tw-shadow-colored: 0 0 #0000;--tw-blur:;--tw-brightness:;--tw-contrast:;--tw-grayscale:;--tw-hue-rotate:;--tw-invert:;--tw-saturate:;--tw-sepia:;--tw-drop-shadow:;--tw-backdrop-blur:;--tw-backdrop-brightness:;--tw-backdrop-contrast:;--tw-backdrop-grayscale:;--tw-backdrop-hue-rotate:;--tw-backdrop-invert:;--tw-backdrop-opacity:;--tw-backdrop-saturate:;--tw-backdrop-sepia:;--tw-contain-size:;--tw-contain-layout:;--tw-contain-paint:;--tw-contain-style:;font-size: medium;font-weight: 400\"><\/p><\/h1>\t\t\t\t\n\t\t<p><\/p>\n<p>Dans le monde en constante \u00e9volution du d\u00e9veloppement .NET, rien ne tue l'\u00e9lan comme des boucles de r\u00e9troaction lentes. Pour les d\u00e9veloppeurs Blazor, attendre une reconstruction compl\u00e8te juste pour voir un changement mineur dans l'interface utilisateur a longtemps \u00e9t\u00e9 un point de friction majeur. Avec .NET 9, la fonctionnalit\u00e9 Hot Reload de Microsoft pour Blazor est enfin mature, offrant des mises \u00e0 jour de code quasi instantan\u00e9es et acc\u00e9l\u00e9rant consid\u00e9rablement le cycle de d\u00e9veloppement.<\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\">Qu'est-ce que Blazor Hot Reload ?<\/h2>\n<p><\/p>\n<p class=\"wp-block-paragraph\">La promesse de Blazor d\u2019offrir une solution .NET \u00ab full-stack \u00bb avec C# partout a toujours \u00e9t\u00e9 s\u00e9duisante. Mais jusqu\u2019\u00e0 r\u00e9cemment, l\u2019exp\u00e9rience d\u00e9veloppeur restait \u00e0 la tra\u00eene par rapport aux frameworks JavaScript dans un domaine cl\u00e9 : la rapidit\u00e9 d\u2019it\u00e9ration. La fonctionnalit\u00e9 \u00ab Hot Reload \u00bb comble d\u00e9sormais cet \u00e9cart. D\u00e9sormais, vous pouvez :<\/p>\n<p><\/p>\n<ul class=\"wp-block-list\">\n<li style=\"list-style-type: none;\">\n<ul><\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Modifier des composants Razor, des fichiers C# ou des fichiers CSS<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Voir les changements refl\u00e9t\u00e9s dans le navigateur en temps r\u00e9el<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>\u00c9vitez la boucle fastidieuse de reconstruction\/red\u00e9ploiement<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<p class=\"wp-block-paragraph\">Cela signifie un prototypage d'interface utilisateur plus rapide, une correction de bugs plus rapide et une exp\u00e9rience d'int\u00e9gration plus fluide pour les nouveaux membres de l'\u00e9quipe \u00e9valuant Blazor ou la suite de composants Xceed.<\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\">Comment activer le rechargement \u00e0 chaud de Blazor dans .NET 9<\/h2>\n<p><\/p>\n<ol class=\"wp-block-list\">\n<li style=\"list-style-type: none;\">\n<ol><\/ol>\n<\/li>\n<\/ol>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Mettez \u00e0 jour votre projet :<\/strong> Assurez-vous de cibler .NET 9. Dans votre <code data-no-translation=\"\">.csproj<\/code> file:<br><code data-no-translation=\"\">&lt;TargetFramework&gt;net9.0&lt;\/TargetFramework&gt;<\/code><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Utilisez Visual Studio 2025 ou VS Code (avec le kit de d\u00e9veloppement C#) :<\/strong> Les deux \u00e9diteurs prennent enti\u00e8rement en charge le rechargement \u00e0 chaud pour les projets Blazor.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Lancez votre application avec le rechargement \u00e0 chaud activ\u00e9 :<\/strong> Dans Visual Studio, appuyez sur <strong>F5<\/strong> ou utiliser le <strong>Rechargement \u00e0 chaud<\/strong> bouton. Dans la CLI, ex\u00e9cutez\u00a0:<br><code data-no-translation=\"\">dotnet watch run<\/code><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Modifier et enregistrer :<\/strong> Modifiez un composant Razor, une m\u00e9thode C# ou un fichier CSS. Votre navigateur s&#x27;actualisera instantan\u00e9ment, sans qu&#x27;il soit n\u00e9cessaire de rafra\u00eechir la page.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\">Ce que le rechargement \u00e0 chaud de Blazor peut et ne peut pas faire dans .NET 9<\/h2>\n<p><\/p>\n<ul class=\"wp-block-list\">\n<li style=\"list-style-type: none;\">\n<ul><\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Prend en charge la plupart des modifications apport\u00e9es aux fichiers Razor, C# et CSS<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Maintient l'\u00e9tat de l'application, aucune perte de donn\u00e9es de formulaire ou de navigation<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Certains changements structurels (comme de nouveaux fichiers ou d\u00e9pendances) n\u00e9cessitent toujours une reconstruction compl\u00e8te<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<p class=\"wp-block-paragraph\">Pour la plupart des ajustements d'interface utilisateur, des corrections de logique et du style, le rechargement \u00e0 chaud change la donne, en particulier pendant les p\u00e9riodes d'int\u00e9gration et d'essai, lorsque les d\u00e9veloppeurs \u00e9valuent la grille de donn\u00e9es ou les composants d'interface utilisateur Blazor de Xceed.<\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\">Tutoriel \u00e9tape par \u00e9tape : Utilisation de Blazor Hot Reload<\/h2>\n<p><\/p>\n<ol class=\"wp-block-list\">\n<li style=\"list-style-type: none;\">\n<ol><\/ol>\n<\/li>\n<\/ol>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Cloner un exemple Blazor :<\/strong> Utilisez une d\u00e9mo Xceed Blazor DataGrid ou votre propre r\u00e9f\u00e9rentiel.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Ex\u00e9cuter avec rechargement \u00e0 chaud :<\/strong> <code data-no-translation=\"\">dotnet watch run<\/code><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Modifier un mod\u00e8le de cellule ou un style :<\/strong> Modifier l'en-t\u00eate d'une colonne, ajuster un th\u00e8me ou mettre \u00e0 jour le rendu d'une cellule.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li><strong>Enregistrer et observer :<\/strong> Visualisez instantan\u00e9ment vos modifications dans le navigateur sans rechargement de page, sans perte de donn\u00e9es.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p><\/p>\n<p><\/p>\n<p class=\"wp-block-paragraph\">Ce flux de travail r\u00e9duit les frictions pour les nouveaux utilisateurs, permet aux d\u00e9veloppeurs d'essai de devenir rapidement productifs et aide les \u00e9quipes \u00e0 livrer des interfaces utilisateur soign\u00e9es avec moins de difficult\u00e9s.<\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\">R\u00e9duire les frictions pour les d\u00e9veloppeurs : l'avantage Xceed<\/h2>\n<p><\/p>\n<p class=\"wp-block-paragraph\">Pour les \u00e9quipes .NET \u00e9valuant les composants Blazor d'Xceed, Hot Reload signifie :<\/p>\n<p><\/p>\n<ul class=\"wp-block-list\">\n<li style=\"list-style-type: none;\">\n<ul><\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Un onboarding plus rapide permet aux utilisateurs d'essai d'it\u00e9rer sur l'interface utilisateur et la logique en quelques secondes.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Cr\u00e9ation plus rapide de preuves de concept, stimulant une activation et une conversion accrues des essais<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li>Moins de temps d'attente, plus de temps de construction<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<p class=\"wp-block-paragraph\">Pr\u00eat \u00e0 d\u00e9marrer votre projet Blazor ? <a href=\"https:\/\/xceed.com\/fr\/proces\/\" target=\"_blank\" rel=\"noreferrer noopener\">Commencez votre essai gratuit de 45 jours<\/a> et faites l'exp\u00e9rience d'un d\u00e9veloppement sans friction avec les composants d'interface utilisateur \u00e9prouv\u00e9s d'Xceed.<\/p>\n<p><\/p>\n<h2 class=\"wp-block-heading\">FAQ : Hot Reload Blazor dans .NET 9<\/h2>\n<p><\/p>\n<ul class=\"wp-block-list\">\n<li style=\"list-style-type: none;\">\n<ul><\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Le rechargement \u00e0 chaud fonctionne-t-il avec tous les types de projets Blazor ?<\/strong><br>Oui, y compris Blazor Server, WebAssembly et Hybrid dans .NET 9.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Puis-je utiliser Hot Reload avec le DataGrid Blazor de Xceed ?<\/strong><br>Modifiez absolument les colonnes, les styles ou la logique et voyez les mises \u00e0 jour instantan\u00e9ment.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>Quelles sont les limitations ?<\/strong><br>Les changements majeurs de structure de projet n\u00e9cessitent toujours un red\u00e9marrage. Mais la plupart des modifications de l'interface utilisateur et de la logique fonctionnent de mani\u00e8re transparente.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li><strong>O\u00f9 puis-je obtenir de l'aide ?<\/strong><br>Visitez le <a href=\"https:\/\/xceed.com\/fr\/support\/\" target=\"_blank\" rel=\"noreferrer noopener\">Centre de support Xceed<\/a> pour la documentation et les conseils d'experts.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><\/p>\n<p><\/p>\n<p class=\"wp-block-paragraph\"><strong>Pr\u00eat \u00e0 essayer le Hot Reload avec Xceed ?<\/strong> <a href=\"https:\/\/xceed.com\/fr\/proces\/\" target=\"_blank\" rel=\"noreferrer noopener\">Obtenez votre essai gratuit aujourd'hui<\/a> et d\u00e9veloppez plus rapidement avec .NET 9.<\/p>\n<p><\/p>","protected":false},"excerpt":{"rendered":"<p>Le rechargement \u00e0 chaud de Blazor dans .NET 9 \u00e9limine les boucles de r\u00e9troaction lentes pour les d\u00e9veloppeurs, permettant des mises \u00e0 jour instantan\u00e9es de l'interface utilisateur et une it\u00e9ration plus rapide. Ce guide tactique montre comment configurer le rechargement \u00e0 chaud, rationaliser l'int\u00e9gration et acc\u00e9l\u00e9rer l'activation d'essai avec les composants Blazor de Xceed afin que vous puissiez construire, tester et exp\u00e9dier plus intelligemment en moins de temps.<\/p>","protected":false},"author":12,"featured_media":3212,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[52],"tags":[442,376,367,446,360,396,437,438,443,373,444,430,390,440,441,436,74,339,332,82],"products":[],"class_list":["post-3210","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-appdev","tag-blazor","tag-codequality","tag-componentlibrary","tag-csharp","tag-developerexperience","tag-devtools","tag-hotreload","tag-moderndev","tag-net9","tag-rapiddevelopment","tag-softwareengineering","tag-techtrends","tag-uidesign","tag-webapps","tag-webdevelopment","tag-dotnet","tag-performance","tag-productivity","tag-xceed"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Blazor Hot Reload: Fast Dev Cycles in .NET 9 - Xceed Software<\/title>\n<meta name=\"description\" content=\"Master Blazor Hot Reload in .NET 9 for instant UI updates and rapid dev cycles. 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