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In WPF & Silverlight, a Storyboard is a collection of animations running in parallel. Not everyone likes the name “Storyboard” though. The idea behind the name was that that list of timelines running in parallel are like a list of plot lines in the
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I’ve never found TreeView to be terribly confusing by itself. But usually I want to data bind a TreeView to a collection with some hierarchy, which leads me to HierarchicalDataTemplate, which didn’t always just write itself for me. If you look at it in
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Attachment(s): TreeViewStepByStep.zip
When we create new classes and members we spend a lot of time and effort to make them as usable, understandable, and discoverable as possible. We follow the .Net Design Guidelines in general, and in particular we constantly look at how this new class
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Here’s the scenario … You have a Customers collection and an Orders collection. In the Orders collection, an Order has a CustomerID property; this is the key to an item in the Customers collection. Your goal is a ComboBox that updates the CustomerID property
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Attachment(s): SelectedValue.zip
ICommand is a simple interface with three members – Execute, CanExecute, and CanExecuteChanged (more on those here ). You can write your own implementations of that interface, one for each command, but that gets a bit heavyweight. So there are several
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(This has been updated with some information about the origin of a routed command’s route, and of focus scopes.) ICommand in WPF is a pretty simple thing at its core. But it gets more interesting and complicated as you build up functionality on top of
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I don’t remember what got me thinking about it, but somewhere along the line I wanted a master/detail view with a navigation bar. E.g., when you change selection in the master view, you can navigate back to the previous selection. Here’s an example (here
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Property triggers today only check for equality. We’d like to add support for other comparison operators, but that hasn’t happened yet. But I needed them for a project, and wrote a workaround for it. It’s a bit hacky in a couple of places, but if you
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I was creating a view of an object that had a bunch of boolean properties, but I wanted to keep the visual representation small. So I created a look for a compact CheckBox that I liked enough to post. As an example scenario, say I’m visualizing a the
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StringFormat is a new property in .Net 3.5 SP1, which is currently in Beta. See Scott’s blog for more info on the beta. When you bind data into a property on an element, it’s automatically type converted for you. For example, this markup: < StackPanel
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This post is about the “logical tree” in WPF, and how it differs from the visual tree. For the most part you don’t need to understand this. But if you want to understand some of the nit-like details of property inheritance, {DynamicResource} references,
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Like a lot of people, I’ve developed software professionally for a lot of different environments: PC systems and embedded systems; high- and low-level languages; kernel mode, user mode, real mode, and protected mode; system services; domain controllers;
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It's easy to use Linq queries to create objects, and to use {Binding}s to bind properties of those objects into your view. If you're doing this for an application that will run as an Xbap ("WPF Browser Application") or as a Silverlight app, just note
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Rob , Nikhil & I were talking today about the early days of Xaml when you could create linear gradient brushes as an attribute value. E.g. (borrowing from Rob’s post on this subject) instead of creating a LinearGradientBrush for the fill of a rectangle
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Here's an example of a way to add context-sensitive help to your application. The main idea is to simply use the built-in ApplicationCommands.Help command. This command is already tied to the F1 key, and so executes when you hit F1, and tells your command
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Attachment(s): ContextSensitiveHelp.zip
