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Introduction This article explores how to use the ViewModel pattern to make it easier to work with the TreeView control in WPF. Along the way, we examine why people often have difficulty with the WPF TreeView , what a ViewModel is, and two demo applications that show how to combine a TreeView with a ViewModel. One of the demos shows how to create a searchable TreeView , the other demonstrates how to implement lazy-loading (a.k.a. load-on-demand). Background of TreeView The TreeView control in WPF has gained an undeserved bad reputation.
One WPF control that we haven't taken a look at here on SOTC is the TreeView . Well, no more! Today we are going to rectify that, as we build an application that not only uses the TreeView , but also dynamically loads data into it on demand.
Dans cet article, je présente une méthodologie, appelée MVVM pour Modèle-Vue-VueModèle. MVVM permet de tirer partie des bénéfices de la plateforme WPF tout en conservant une application correctement architecturée, maintenable et testable. Vous remarquerez que tout au long de l'article, j'utilise plus le terme méthodologie que design pattern pour parler de MVVM. Ce choix est personnel, et les ressources que l'on trouve sur le sujet, notamment en anglais, utilisent parfois la deuxième terminologie. J'estime que le lecteur connaît les fondamentaux de WPF (XAML, Databinding, Commandes, etc.) et de la plateforme .Net. C'est le langage C# qui sera utilisé dans les exemples de code.
Overview Microsoft's Visual C++ (MSVC) integrated development environment (IDE) can be overwhelming if the programmer has never used it. This document is designed to aid those wanting to compile a DLL for use with LabVIEW.
Perl 5 introduced two very powerful constructs: "lookahead" and "lookbehind". Collectively, these are called "lookaround". They are also called "zero-width assertions". They are zero-width just like the start and end of line , and start and end of word anchors that I already explained.
Date de publication : 07/12/2004 , Date de mise a jour : 07/12/2004 Par LEBRUN Thomas (Autres Articles) Dans cet article, vous apprendrez comment rendre vos applications localisables, c'est à dire multi-langues. I. Introduction II. Définition III.
I recently acquired an SSL certificate for my client, and I discovered that while things are not that hard to setup, there are also things that are not really documented anywhere. First, lets assume that you actually want to force SSL, which seems like a good thing in many cases, but you also want to have an automatic and graceful redirect should someone try to use regular http. So what do we do? You could add code to all of your pages, or to your base page, or in the global events, to check if https was used, and if not then issue a redirect to https -- you could, but I wouldn't.