2 Articles match "Handler","WPF"

23 Articles match "Handler","WPF"

• The Best from DevelopMentor

  MORE

• Part 3: Shifting focus to the first available element in WPF
  
  We've seen how to programatically control focus and that's all great stuff, but one thing I like to do with WPF is see how much of the repetitive or UI-specific code I can move into the XAML and keep out of the code behind. This event is raised each time the TabControl shifts to a new tab - so if we never unhook our handler, our focus management code is called each time the tab page becomes visible. Tags: NET;WPF We can use the FocusManager.FocusedElement property to shift focus in XAML but it only works when the element exists in the main XAML file. but all is not lost!
  Mark's Blog of Random Thoughts - Friday, September 12, 2008
  READ MORE
• Rehosting the Workflow Designer in WF4
  
  Both these properties point to ready to use WPF UIElement’s so, as long as the host used WPF, adding them to a form is easy. The toolbox on the left if another standard WPF control called the ToolboxControl. Again easy to add to any WPF form. We could periodically check this Selection but its even easier to subscribe to chances using the Subscribe() function and passing in a handler that is called whenever the selection changes. workflowDesigner.Context.Items.Subscribe (SelectionChanged); The handler itself isn’t very complex either. orderby type.Name.
  The Problem Solver - Wednesday, December 23, 2009
  READ MORE
• 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. If you need an event handler in your code behind, like the button click, make it a single line and pass the request onto the ViewModel. Tags: NET DevCenter WPF Silverlight The View – Model – ViewModel design pattern, also known as MVVM, is getting more popular these days. 11: {. 13: set. 14: {. 19: }.
  The Problem Solver - Tuesday, April 7, 2009
  READ MORE
• Part 3: Shifting focus to the first available element in WPF
  
  We've seen how to programatically control focus and that's all great stuff, but one thing I like to do with WPF is see how much of the repetitive or UI-specific code I can move into the XAML and keep out of the code behind. This event is raised each time the TabControl shifts to a new tab - so if we never unhook our handler, our focus management code is called each time the tab page becomes visible. Tags: NET WPF We can use the FocusManager.FocusedElement property to shift focus in XAML but it only works when the element exists in the main XAML file. but all is not lost!
  Mark's Blog of Random Thoughts - Friday, September 12, 2008
  READ MORE
• MVVM: Views and ViewModels
  
  Views are the UI presentation of data - in the case of a WPF/Silverlight application this is most commonly the XAML and XAML code behind files (they are considered a single element together). This extension is responsible for creating an associated ViewModel for this view (where our testable business logic should go) and also wiring up a couple of special event handlers that will allow the ViewModel to activate the view and close the view respectively. That way, my ViewModel sticks with base (non-WPF) types. This is necessary under WPF 3.5 Project Template. Views.
  Mark's Blog of Random Thoughts - Friday, January 22, 2010
  READ MORE
• Easier Async for Silverlight Apps using MVVM
  
  However, as is the case with other UI frameworks such as Windows Forms or WPF, you should not touch UI elements from worker threads. WPF and Silverlight have Dispatcher.CheckAccess / Dispatcher.BeginInvoke. And the BackgroundWorker component lets you write events handlers that are executed on the UI thread when reporting progress or completion. protected void Notify ( EventHandler < NotificationEventArgs > handler, NotificationEventArgs e) { if (handler != Windows Forms has the Control.InvokeRequired / Control.BeginInvoke API.
  Tony and Zuzana's World - Saturday, January 29, 2011
  READ MORE
• NativeActivity – A Tricky Beast
  
  But, because we want to retry on failure, we also pass in a fault handler (OnFaulted). Next it schedules the Delay as we have to wait for the retry delay and wires up a completion handler (OnDelayComplete) so we know when the delay is finished. OnDelayComplete simply reschedules the Body activity, remembering to pass the fault handler again in case the activity fails again. have written a designer to go with this (designers in WF4 are WPF based). I’m writing Essential Windows Workflow Foundation 4.0 with Maurice for DevelopMentor. AsyncCodeActivity. NativeActivity.
  .NET Meanderings - Tuesday, February 9, 2010
  READ MORE