composite wpf - Page 122

WPF Parent Window shading using Pixel Shaders

This article discusses using Pixel Shaders to shade the main window when a dialog is showing.

Spirograph Shapes: WPF Bezier shapes from math formulae

A collection of shapes: Epicycloids, Epitrochoids, Hypocycloids, Hypotrochoids, Farris Wheels, Lissajous Curves and Rose Curves

WPF Wonders: 3D Drawing with Textures, Transformations, and Realism

To build realism into 3D scenes, you need to draw with the appropriate materials—and transformations help make the drawing process much simpler.

WPF MenuItem hiding (2 replies)

Hi, I would like to hide selected MenuItem on Delete key press without closing the menu. My markup is: Menu MenuItem Header "Menu" MenuItem Header "First" KeyDown "MenuItem KeyDown"/ MenuItem Header "Second" KeyDown "MenuItem KeyDown"/ MenuItem Header "Third" KeyDown "MenuItem KeyDown"/ /MenuItem /Menu where event handler is: private void MenuItem KeyDown(object sender, KeyEventArgs e) { if (e.Key...

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WPF PropertyGrid - MVVM techniques

How to build a multicolumn ListView that selects cell templates based on the row data type; and how to create a ViewModel on the fly for each cell template.

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WPF : Showing you how to use PRISM in a very unlike PRISM way

Showcasing how to use PRISMs regions outside of PRISM

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Dealing with transformations in WPF: PartII-Custom and advanced 2D transformations

In a previous article we've discovered the different transformation modes. In this article, we continue discovering the transformations.

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Implementing logical paging with RadDataPager for WPF and Silverlight

Following the great series about RadDataPager started by Rossen and Pavel, today I’m going to show you how to implement logical paging. We are going to implement alphabetical paging similar to this ASP.NET AJAX Grid Demo. As you may already know, the key to the heart of the RadDataPager is the IPagedCollectionView interface. You can create your own implementations of this interface and implement any custom logic for paging you want. This is exactly what we are going to do in this article. Introducing PagedCollectionViewBase and LogicallyPagedCollectionView<T> If you have looked at IPagedCollectionView interface you may have found out that it is not a trivial interface to implement. It has 5 methods, 6 properties and 2 events – total number of members to implement 13. To ease any further implementation of the paging interface we are going to create a base class that will have most of the ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Bitmap Effects In WPF - Part III

In previous article we saw remaining three effects DropShadow, Bevel and Emboss. In this article we will see how to group effects, and we will see how we can achieve the effects with triggers.

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WPF Applications – Handling the Unhandled

- by David Totzke

Instead of just letting your application crash, you can attach a method to the DispatcherUnhandledExceptionEventHandler and one to the AppDomain.Current.UnhandledException. You wire these up in the code behind of your application which by default is App.xaml.cs. You can log these errors or throw up a message Don Box and tell the user what happened. Then you shut down the app gracefully. You shut it down because something bad happened that you weren’t expecting and at this point there is no guarantee as to the state of the stack or memory or anything really. All bets are off. If, on the other hand, the method for the UnhandledException is empty and the method for the DispatcherUnhandledEventHandler ends up in a call to a method called LogError() and the LogError() method is FUCKING EMPTY, and you just swallow the exceptions and keep on running, then, not so much. I spent nearly a day trying to track down a bug that would have been obvious had something been logged or if it just crashed. It’s my own fault I suppose. I knew these were hooked up. I just never suspected that there wouldn’t be any implementation at all. Live and learn. Customs Man at Heathrow: Anything to declare, Sir? Jekyll and Hyde: Man has not evolved an inch from the slime that spawned him. Customs Man at Heathrow: Very Good, Sir. I tend to agree. Dave Just because I can…

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WPF MenuItem hiding (2 replies)

Hi, I would like to hide selected MenuItem on Delete key press without closing the menu. My markup is: Menu MenuItem Header "Menu" MenuItem Header "First" KeyDown "MenuItem KeyDown"/ MenuItem Header "Second" KeyDown "MenuItem KeyDown"/ MenuItem Header "Third" KeyDown "MenuItem KeyDown"/ /MenuItem /Menu where event handler is: private void MenuItem KeyDown(object sender, KeyEventArgs e) { if (e.Key...

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Commands in WPF - Part IV

In Part III of this article series; we have seen how Input Binding is helpful. In this article we will explore on Command Objects and Command Types.

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Bing Maps WPF Hack

- by Chris Gardner

I've spent the past couple of days adding the Bing Maps WFP Control to an application I'm developing. I kept running into a strange thing that was driving me crazy. I have the control in the bottom of a StackPanel, under a Grid. No matter how hard I tried, setting the Height of the Bing control to Auto would cause the ActualHeight to always be 60.93. Now, I still don't know why this is happening. Truth be told, I'm not too sure I care. I did, however, find a reasonable hack around the problem. I do know the size of everything else. As such, I tied into the SizeChanged Event of the StackPanel. Using this, I could set the Height to the correct size based on the new size of the panel. private void ResizeMap( object sender, SizeChangedEventArgs e ) { myMap.Height = ((StackPanel)sender).ActualHeight - 75.0; } The hard-coded number is was because I had a fixed height of controls above my map. If you have dynamic elements, you could easily iterate through them and delete out the portions. So, there you have it. It's not much, but it annoyed the Smurf out of me for a brief period of time. Since I never found an answer, I figured I'd share.

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Bitmap Effects In WPF - Part II

In previous article we saw how we can add effects; we experienced Blur and Outer Glow Bitmap effects. In this article we will see rest of the 3 Bitmap Effects.

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Using AvalonEdit (WPF Text Editor)

AvalonEdit is an extensible Open-Source text editor with support for syntax highlighting and folding.

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WPF and user Interactivity Part IV: Attached property for moving and resizing shapes

In this article, I will refactor the previous code by representing it as an attached property.

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WPF Release History : Q1 2010 SP2 (version 2010.1.0603)

Q1 2010 SP2 Changes: RadGrid What's New: Added ItemTemplate property to GridViewComboBoxColumn. Added: ColumnWidthChanged and ColumnWidthChanging events. Added: GridViewCsvExportOptions type to control exporting in CSV format. Changed the namespace of LookupElement from Telerik.Windows.Controls to Telerik.Windows.Controls.Gridview. ElementExporting and ElementExported events added to GridViewDataControl. What's Fixed: Fixing problem with ShowInsertRow when clicked numerous times resulting...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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Creating a WPF DockPanel using XAML

Beginners tutorial on how to create a DockPanel using XAML

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WPF DataGrid using a DataGridTemplateColumn rather than a DataGridComboBoxColumn to show selected value at load

- by T

My problem was that using a DataGridComboBoxColumn I couldn’t get it to show the selected value when the DataGrid loaded. Instead, the user would have to click in the cells and like magic, the current selected values would appear and it looked the way I wanted it to on load. Here is what I had <DataGridComboBoxColumn MinWidth="150" x:Name="crewColumn" Header="Crew" ItemsSource="{Binding JobEdit.Crews, Source={StaticResource Locator}}" DisplayMemberPath="Name" SelectedItemBinding="{Binding JobEdit.SelectedCrew, Mode=TwoWay, Source={StaticResource Locator}}" /> Here is what I changed it too. This works great. It displays the selected item when the DataGrid loads and shows the combo box when the user goes into edit mode. <DataGridTemplateColumn Header="Crew" MinWidth="150"> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <TextBlock Text="{Binding Crew.Name}"></TextBlock> </DataTemplate> </DataGridTemplateColumn.CellTemplate> <DataGridTemplateColumn.CellEditingTemplate> <DataTemplate> <ComboBox ItemsSource="{Binding JobEdit.Crews, Source={StaticResource Locator}}" DisplayMemberPath="Name" SelectedItem="{Binding JobEdit.SelectedCrew, Mode=TwoWay, Source={StaticResource Locator}}"></ComboBox> </DataTemplate> </DataGridTemplateColumn.CellEditingTemplate> </DataGridTemplateColumn>

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WPF, Silverlight Controls Updated

DevExpress tools shipped with component suite Windows Presentation Foundation - Silverlight - Programming - Multimedia - Development Frameworks

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Move Up/Down TreeViewItem in TreeView in WPF

In this article we will see how we can move up/down a TreeViewItem in TreeView.

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Enable MultiSelect in WPF ListView (2)

Make your ListView support item selection by dragging,

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WPF Release History : Q2 2010 Beta (version 2010.1.0609)

Q2 2010 Beta New Controls: RadTreeListView As you have probably already noticed we started a major new initiative for completely re-writing the TreeListView control. Our first attempt (back in 2009) proved that our users are mostly interested in a TreeListView control that is based on the GridView control rather then the TreeView. Therefore, we decided to completely rebuild the control and the result is that the TreeListView now combines the powerful data-driven features from RadGridView with...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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