18 Articles match "Class","WPF"

56 Articles match "Class","WPF"

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• WPF MVVM Helper Library (WPF + MVVM = testability)
  
  There's been a lot of talk about the Model-View-ViewModel pattern recently and it's usage around the WPF and Silverlight technology stack. When teaching WPF, I always introduce students to MVVM as part of the Essential WPF class, it's an incredibly useful pattern that really separates the UI from the code behind behavior. bit of history -- the library is really just a place where I dump all kinds of useful utility classes, helpers, wrappers, etc. lt; Window x : Class ="TestMvvm.MainWindow". Tags: NET WPF that I tend to use a lot. file -.
  Mark's Blog of Random Thoughts - Friday, April 17, 2009
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• Part 2: Changing WPF focus in code
  
  In the last post , I wrote about how focus is generally managed in WPF - we have focus scopes to track a single element within that scope for logical focus, and then one of those elements is given physical, or keyboard focus. First, there is a Keyboard class in WPF which exposes several methods and properties. This is controlled through the KeyboardNavigation class which is used when the user presses a key that changes focus (TAB, SHIFT+TAB, Up, Down, etc.). However, a popular way to develop WPF applications is to separate out chunks of UI into separate UserControls.
  Mark's Blog of Random Thoughts - Thursday, September 4, 2008
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• WPF Data Providers
  
  One of the nifty new features of the WPF platform is the pluggable data providers. Both of these derive from the abstract class System.Data.DataSourceProvider which implements the binding glue ( INotifyPropertyChanged ) needed for data binding. Another interesting thing about this class is that we can define the XML data inline within the XAML document. Data binding in WPF is extremely powerful -- I am constantly amazed at how much procedural code you can dump in favor of markup with creative bindings. Tags: NET;Code;WPF State, Age, Income. xmlns = " [link] ".
  Mark's Blog of Random Thoughts - Wednesday, January 17, 2007
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• (Possibly) better validations in WPF
  
  I've never cared much for the built-in validation mechanisms provided by WPF. just don't think any of them feel natural to the way we build WPF applications today. Basically, there are essentially three mechanisms built into WPF for validations: Validation Rules. Finally, IDataErrorInfo was added with WPF 3.5 Often, you will use one or several of these validation techniques in your WPF application to check the input. It piggy-backs onto the IDataErrorInfo interface, but delegates off to a helper class which looks for attributes applied to the properties.
  Mark's Blog of Random Thoughts - Monday, August 25, 2008
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• Using Model – View – ViewModel with Silverlight
  
  have found it extremely easy to use when developing very different applications and have used the design pattern recently in both ASP.NET, WPF and Silverlight applications. Josh Smith did an excellent screen cast for Pixel8 on using MVVM with WPF, you can find it here. The ViewModel is just another class. 5: public class Customer : INotifyPropertyChanged. 6: public partial class CustomerView : UserControl. The ViewModel class is the one that glues the View and the Model together, hence its name. Tags: NET DevCenter WPF Silverlight 11: {. 13: set.
  The Problem Solver - Tuesday, April 7, 2009
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• Playing with WPF Behaviors - a WatermarkText behavior
  
  This new feature formalizes the "attached behavior" model that has become so prevelant in WPF (and Silverlight) development. This can be UIElement for anything WPF, or more restrictive if necessary based on the events you intend to hook up. class WatermarkTextBehavior : Behavior >. These should be done in the form of Dependency Properties so they are bindable and interact nicely with WPF. Tags: NET Code WPF One of the coolest new features of Blend 3 is the inclusion of behaviors. For our purposes here, we will set the restricted type to TextBox. public.
  Mark's Blog of Random Thoughts - Friday, July 24, 2009
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• Using MVVM with Menus in WPF
  
  Here's one I've used: public class MenuItem. {. Tags: NET WPF One question I've fielded a couple of times is how to manage menus, primarily context menus, with the MVVM pattern. It turns out to be pretty easy once you know the "trick". The key thing to keep in mind is that menus are just ItemsControls - they support data templating and binding like any other ItemsControl. However, the part where people get lost is in hooking up the commands. Here's the trick: Step 1: Define some code behind construct to manage each menu item in a hiearchial fashion. public List. MenuOptions. {.
  Mark's Blog of Random Thoughts - Tuesday, April 21, 2009
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