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Articles / Desktop Programming / WPF
Posted 11 Nov 2006


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13 Jul 2008CPOL5 min read
A free library of controls and utility classes for use in WPF applications.



Welcome to WPF.JoshSmith. This is not a typical CodeProject article. I am using the Web page generated for this article to host, and make publicly available, a library of classes I have created for use in Windows Presentation Foundation applications. Over time I will update this page (and the source code download) to include any new classes I've added to the WPF.JoshSmith library. Think of this as a really cheap and easy alternative to creating a full Web site just to make the assembly available to the world.

All of the major classes in WPF.JoshSmith either have an article about them here on the CodeProject, or I've blogged about them. The purpose of WPF.JoshSmith is to consolidate all of the classes I've created into one place, thus making it easier for people to have all the goodies in one assembly. In addition to providing the WPF.JoshSmith assembly, the source code download at the top of this article also contains test/demo projects for many of the various classes in the library. Those projects show how to use the code and what the various classes do.

All of the code in the library can be used free of charge, provided that the copyright statements in each source file remain intact. Josh Smith accepts no responsibility for any errors, loss of data, system crashes, etc. that occur as a result of using WPF.JoshSmith.


This section provides an overview of the major classes available in the library, divided up by namespaces. Click on the name of a class to open an article/blog entry which discusses it in depth.

  • WPF.JoshSmith
    • Adorners
      • DragAdorner - A lightweight adorner which renders a visual that can follow the mouse cursor, such as during a drag-and-drop operation. Original concept taken from this blog post.
      • UIElementAdorner - An adorner which can display one and only one UIElement. The element is added to the adorner's visual and logical trees, enabling it to particpate in dependency property value inheritance, amongst other things.
    • Controls
      • Validation
        • RegexValidationRule - A ValidationRule-derived class which supports the use of regular expressions for validation.
        • RegexValidator - A static class which provides attached properties that supply validation of the text in a TextBox, using regular expressions. This class works in conjunction with the RegexValidationRule.
      • CenteredContentControl - A ContentControl derivative which exposes read-only dependency properties that return the element's center point (CenterX and CenterY). Those values can be used to bind another element (such as a Line) to the center of the CenteredContentControl, even if it is relocated at runtime.
      • RoutedDataTemplateSelector - A DataTemplateSelector that bubbles a routed event when asked for a template, allowing an element in the visual tree to decide what template to use.
      • SlidingListBox - A ListBox which provides an animated slide effect when ListBoxItems are selected.
      • SmartTextBox - A TextBox with support for displaying a list of suggestions when the user misspells a word. The user presses the F1 key to display the list of suggestions.
    • Data
      • ValueConverters
        • EnumValueToDescriptionConverter - An IValueConverter which supports conversion from an enum value to the description of that value. If the enum value is decorated with the DescriptionAttribute attribute, its Description value is returned. Otherwise, the name of the enum value is returned.
        • ResourceKeyToResourceConverter - A converter that performs a resource lookup, using the conversion value as a resource key.
        • ValueConverterGroup - An IValueConverter which contains a list of IValueConverters and invokes their Convert or ConvertBack methods in the order that they exist in the list. This allows for modular value converters to be "piped" together to achieve complex conversions.
        • XamlToObjectConverter - An IValueConverter which creates a .NET object from the XAML contained in an XmlElement. The object created can be used as the content of a WPF control or ui element, such as the ContentPresenter. The inner XML of the XmlElement passed to the converter must contain valid XAML.
      • DataContextSpy - Exports an element tree's DataContext to objects external to the tree itself.
    • Input
      • CommandGroup - A command that aggregates other commands into a group and operates on them as an atomic unit.
      • SmartRoutedCommand - A RoutedCommand which allows its subclasses to provide default logic for determining if they can execute and how to execute.
    • Markup
      • IfFullTrustExtension - This markup extension conditionally instantiates the XAML you pass it if and only if the application is running in full-trust.
    • Panels
      • DragCanvas - A Canvas which manages dragging of the UIElements it contains.
      • Panel3D - A panel that lays its children out in 3D space and provides animated movement of the children.
  • ServiceProviders
    • UI
      • ListViewDragDropManager - Manages the dragging and dropping of ListViewItems in a ListView.
      • ListViewItemDragState - Exposes attached properties used in conjunction with the ListViewDragDropManager class. Those properties can be used to allow triggers to modify the appearance of ListViewItems in a ListView during a drag-drop operation.
      • UnloadedManager - A service provider class which provides a means of releasing resources when a FrameworkElement's Unloaded event fires. If the DataContext of the element implements IUnloadable, it's Unload method will be invoked when the elements Unloaded event fires.

    Revision History

    Date Assembly Version Notes
    November 11, 2006

    Created the article.

    November 28, 2006

    Added the CenteredContentControl and updated the source code download.

    January 24, 2007

    Added the ListViewDragDropManager, ListViewItemDragState, and DragAdorner classes. Also fixed broken links to articles that were moved. Updated the source code download.

    February 1, 2007

    Fixed a couple of bugs in the ListViewDragDropManager (see the article for details). Updated the source code download.

    February 25, 2007

    Added the SmartTextBox control, and the UIElementAdorner. Refactored the DragAdorner and UIElementAdorner so that they share a base class. Used a bug fix created by William J. Roberts in the MouseUtilities class (read here for more details). Updated the source code download.

    April 13, 2007

    Fixed a minor bug in the ListViewDragDropManager, which is described in detail at the bottom of that class's article. Updated the source code download.

    July 13, 20082.0.0.0Added many classes to the library and fixed the many links that broke over time.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Josh Smith
Software Developer (Senior)
United States United States
Josh creates software, for iOS and Windows.

He works at Black Pixel as a Senior Developer.

Read his iOS Programming for .NET Developers[^] book to learn how to write iPhone and iPad apps by leveraging your existing .NET skills.

Use his Master WPF[^] app on your iPhone to sharpen your WPF skills on the go.

Check out his Advanced MVVM[^] book.

Visit his WPF blog[^] or stop by his iOS blog[^].

See his website Josh Smith Digital[^].

Comments and Discussions

Questionrolling when the number of controls added render beyond the screen Pin
Gangadhar Mahindrakar11-Jan-12 0:30
MemberGangadhar Mahindrakar11-Jan-12 0:30 
SuggestionWrong link Pin
hb_3330-Jun-11 4:51
Memberhb_3330-Jun-11 4:51 
GeneralTombstoning Pin
GerhardKreuzer11-Feb-11 1:57
MemberGerhardKreuzer11-Feb-11 1:57 
GeneralMy vote of 5 Pin
Uday_T10-Jan-11 5:09
MemberUday_T10-Jan-11 5:09 
GeneralGreat Contribution ! Pin
gilbertblanco5-Sep-10 21:26
Membergilbertblanco5-Sep-10 21:26 
GeneralIt was great article.Maybe you can help some Pin
defanana25-Apr-10 23:22
Memberdefanana25-Apr-10 23:22 
GeneralUsing the library Pin
meripu13-Mar-10 3:30
Membermeripu13-Mar-10 3:30 
QuestionIs it a good idea to use event to handle change things cross views in MVVM? Pin
JJChen4019-Jun-09 12:49
MemberJJChen4019-Jun-09 12:49 
AnswerRe: Is it a good idea to use event to handle change things cross views in MVVM? Pin
Michael Agroskin30-Dec-10 8:17
MemberMichael Agroskin30-Dec-10 8:17 
QuestionGreat job! How to make WindowsFormsHost be dragged inside the canvas? Pin
haipingjia13-May-09 10:08
Memberhaipingjia13-May-09 10:08 
AnswerDragging WindowsFormsHost inside WPF UIElements is possible? Pin
haipingjia15-May-09 8:49
Memberhaipingjia15-May-09 8:49 
GeneralRe: Dragging WindowsFormsHost inside WPF UIElements is possible? Pin
haipingjia18-May-09 8:10
Memberhaipingjia18-May-09 8:10 
GeneralRe: Dragging WindowsFormsHost inside WPF UIElements is possible? Pin
jfriedman15-Apr-11 8:26
Memberjfriedman15-Apr-11 8:26 
GeneralA question about MVVM pattern implementation Pin
JJChen408-May-09 10:03
MemberJJChen408-May-09 10:03 
GeneralRe: A question about MVVM pattern implementation Pin
Josh Smith8-May-09 10:16
MemberJosh Smith8-May-09 10:16 
GeneralRe: A question about MVVM pattern implementation Pin
JJChen408-May-09 12:19
MemberJJChen408-May-09 12:19 
GeneralRe: A question about MVVM pattern implementation Pin
Josh Smith8-May-09 12:24
MemberJosh Smith8-May-09 12:24 
GeneralRe: A question about MVVM pattern implementation Pin
Michael Agroskin30-Dec-10 8:20
MemberMichael Agroskin30-Dec-10 8:20 
GeneralError Message on PerformDragOperation: Value cannot be null Pin
IntraRELY16-Apr-09 4:21
MemberIntraRELY16-Apr-09 4:21 
GeneralRegexValidationRule Bug Pin
iSpeakGeek4-Feb-09 0:30
MemberiSpeakGeek4-Feb-09 0:30 
GeneralRe: RegexValidationRule Bug Pin
Josh Smith4-Feb-09 3:33
MemberJosh Smith4-Feb-09 3:33 
GeneralRe: RegexValidationRule Bug Pin
iSpeakGeek5-Feb-09 7:32
MemberiSpeakGeek5-Feb-09 7:32 
GeneralRe: RegexValidationRule Bug Pin
Josh Smith5-Feb-09 7:42
MemberJosh Smith5-Feb-09 7:42 
GeneralRe: RegexValidationRule Bug Pin
iSpeakGeek6-Feb-09 1:40
MemberiSpeakGeek6-Feb-09 1:40 
GeneralRe: RegexValidationRule Bug Pin
wfm6-May-09 3:16
Memberwfm6-May-09 3:16 

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