{"id":3175,"date":"2025-09-24T16:05:21","date_gmt":"2025-09-24T16:05:21","guid":{"rendered":"https:\/\/xceed.com\/?p=3175"},"modified":"2026-02-16T19:28:34","modified_gmt":"2026-02-16T19:28:34","slug":"step-by-step-building-a-high-performance-master-detail-grid-in-wpf-mvvm-async-loads","status":"publish","type":"post","link":"https:\/\/xceed.com\/fr\/blog\/all\/step-by-step-building-a-high-performance-master-detail-grid-in-wpf-mvvm-async-loads\/","title":{"rendered":"Pas \u00e0 pas : Construire une grille ma\u00eetre-d\u00e9tail haute performance en WPF (MVVM, chargements asynchrones)"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3175\" class=\"elementor elementor-3175\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7541308e e-flex e-con-boxed e-con e-parent\" data-id=\"7541308e\" 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-6ee60b4 elementor-widget elementor-widget-text-editor\" data-id=\"6ee60b4\" 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>WPF master-detail grid performance is a challenge for many .NET developers. Expanding detail rows can slow down your app and ruin scroll fluidity. In this step-by-step guide, you\u2019ll learn how to combine MVVM, async commands, and aggressive virtualization to build a high-performance master-detail grid in WPF\u2014ensuring your UI stays fast, responsive, and easy to maintain.<\/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-75544c51 elementor-widget elementor-widget-text-editor\" data-id=\"75544c51\" 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\n<h2 class=\"wp-block-heading\"><strong>Introduction<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Master\u2013detail UIs are notorious for slowing WPF applications down. Expanding detail rows often multiplies the visual tree, killing performance and scroll fluidity. This guide shows how to keep things snappy by combining <strong>MVVM<\/strong>, <strong>async commands<\/strong>et <strong>virtualization<\/strong> inside a WPF DataGrid.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What You\u2019ll Build<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Master grid of Orders<\/strong><\/li>\n\n\n\n<li>On expand \u2192 <strong>details load asynchronously<\/strong> (Items per Order)<\/li>\n\n\n\n<li><strong>Smooth scrolling<\/strong> with row virtualization and recycling<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Key XAML (trimmed for clarity)<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code data-no-translation=\"\">&lt;DataGrid ItemsSource=\"{Binding Orders}\"\n          EnableRowVirtualization=\"True\"\n          VirtualizingPanel.IsVirtualizing=\"True\"\n          VirtualizingPanel.VirtualizationMode=\"Recycling\"&gt;\n\n  &lt;DataGrid.RowDetailsTemplate&gt;\n    &lt;DataTemplate&gt;\n      &lt;ItemsControl ItemsSource=\"{Binding Items}\" \/&gt;\n    &lt;\/DataTemplate&gt;\n  &lt;\/DataGrid.RowDetailsTemplate&gt;\n&lt;\/DataGrid&gt;\n<\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Virtualization flags<\/strong> keep scrolling smooth.<\/li>\n\n\n\n<li><strong>RowDetailsTemplate<\/strong> bound to a lightweight Items view.<\/li>\n\n\n\n<li><strong>Async command<\/strong> loads details without blocking UI.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">MVVM Pattern<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ViewModel<\/strong> exposes ObservableCollection&lt;OrderVm>.<\/li>\n\n\n\n<li>Each OrderVm loads details with a Task-based async method.<\/li>\n\n\n\n<li><strong>Placeholder UI<\/strong> shown instantly while data fetch runs.<\/li>\n\n\n\n<li><strong>Cancellation tokens<\/strong> ensure stale loads are canceled during rapid navigation.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Performance Tips<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Keep detail templates <strong>lightweight<\/strong> (avoid heavy converters).<\/li>\n\n\n\n<li>Defer expensive bindings until IsVisible == true.<\/li>\n\n\n\n<li>Cache small detail views if reused frequently.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Developer Wins<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Users perceive <strong>instant expand response<\/strong>.<\/li>\n\n\n\n<li>No UI thread stalls during slow I\/O.<\/li>\n\n\n\n<li>Clean <strong>MVVM separation<\/strong> \u2192 easier testing and maintenance.<\/li>\n\n\n\n<li><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ud83d\udc49 Get the <strong>full working sample<\/strong> and test it against your own dataset.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Commencez votre <strong>45-day trial<\/strong> here: <a href=\"https:\/\/xceed.com\/fr\/proces\/\">https:\/\/xceed.com\/trial\/<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>FAQ<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Can I prefetch details for the next rows?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A: Yes. Prefetch adjacent rows on scroll idle, but keep requests cancellable.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: Will virtualization break details?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A: No. Details render on demand. Just keep templates lightweight.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Q: How do I theme the details consistently?<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A: Apply <strong>Toolkit Plus themes<\/strong> or shared resource dictionaries.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Les interfaces utilisateur ma\u00eetre-d\u00e9tail sont des pi\u00e8ges de performance notoires dans WPF. L'expansion des d\u00e9tails multiplie l'arbre visuel, d\u00e9grade le taux d'images par seconde et ruine le d\u00e9filement fluide. Ce guide montre comment les maintenir r\u00e9actives gr\u00e2ce \u00e0 un \u00e9tat pilot\u00e9 par MVVM, des commandes asynchrones et une virtualisation agressive \u00e0 l'int\u00e9rieur d'un DataGrid WPF.<\/p>","protected":false},"author":12,"featured_media":3176,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[141,60],"tags":[70,109,118,83,72,115,82,122],"class_list":["post-3175","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-all","category-tutorials","tag-net","tag-net-components","tag-net-developer-tools","tag-partnership","tag-wpf","tag-wpf-data-grid","tag-xceed","tag-xceed-software"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>WPF Master-Detail Grid Performance: Async, MVVM &amp; Virtualization Step-by-Step<\/title>\n<meta name=\"description\" content=\"Boost WPF master-detail grid performance with async loads, MVVM, and virtualization. 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