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  • TreeView Drag Drop in Silverlight

    0 comments  /  posted by  Silverlight Show  on  May 20, 2010 (1 month ago)
    Suprotim Agarwal has seen plenty of questions around drag-drop operations within a TreeView so he decided to dedicate a post to it.

    Now usually when one thinks of implementing a Drag Drop operation on a TreeView, there are a couple of events like the DragEnter, DragLeave, DragOver and Drop that are to be raised and handled. In some cases, you must also cancel the drag-n-drop operation if the drop is invalid. Overall, this looks like a lot of work for a developer who wants to quickly implement drag-n-drop functionality on his/her controls.

  • 0 comments  /  posted by  Silverlight Show  on  May 19, 2010 (1 month ago)
    In this very detailed post, Kunal Chowdhury talks about drag-and-drop within and between ListBox controls.

    In this article, I am going to discuss with you regarding the Drag and Drop functionality inside a Silverlight ListBox control. This article will also cover the Drag and Drop operation between two ListBox control. We will use here the Silvelright 4 Toolkit to implement the feature. 

  • A DotNetNuke Silverlight 4 Drag and Drop File Manager

    0 comments  /  posted by  Silverlight Show  on  May 10, 2010 (1 month ago)
    Michael Washington just posted a DotNetNuke version of the Silverlight 4 Drag and Drop File manager that he covered in two of his previous CodeProject articles.

    This project uses the View Model Style pattern that allows for a complete separation between program and design. This allows a Designer with no programming ability, to completely change not only the style and look of the application, but also the entire design of the application.

  • Drag and Drop grouping in Datagrid

    0 comments  /  posted by  Silverlight Show  on  Apr 26, 2010 (1 month ago)
    In this post at Lee's corner you can find out something more about drag and drop grouping in Datagrid.

    Most 3rd party components have a datagrid where you can a drag column header to the area above the grid to group the data. Here is one way to do the same with a regular datagrid.

  • 0 comments  /  posted by  Silverlight Show  on  Feb 01, 2010 (4 months ago)
    Tags: Metadata , RIA Services , XAML , Media , Drag and Drop
    If you have ever wondered how to read mp3 metadata with SL and drag-drop, take a look at this article written by Tim Heuer.

    I’m working on a little sample application for music management in Silverlight using WCF RIA Services and some other new Silverlight 4 features.  One thing that I wanted to add to the application was the ability to drag an audio file and either lookup the data and/or add a new album/artist/song to the library automatically.

  • 0 comments  /  posted by  Silverlight Show  on  Feb 01, 2010 (4 months ago)

    In this post Brett Balmer talks about dragging files into Azure storage using Silverlight 4.

    I recently needed a way to upload images and other files to Windows Azure Storage. I like the way some sites implement ActiveX controls or other plugins that allow you to drag and drop the files onto the browser itself for upload. Naturally when I read about the new capabilites of Silverlight 4 to accept dropped files I was dying to write a little upload control. This blog is hosted on Windows Azure, and as mentioned in previous posts, the blog-entry content files (images/xap files) are stored in Windows Azure Storage.

  • 5 comments  /  posted by  Braulio Diez  on  Jan 17, 2010 (5 months ago)


    Some years ago (pre-silverlight times) a client ask me for a weird requirement…he wanted to drag files from his local explorer and drop them on their ASP .net grid application without using any ActiveX help… I thought, umm… is that possible?

    With the advent of Silverlight 2 we got the same request again, … we knew this time it was not a technology limitation, it was a sandbox security limitation, how does the Ms chaps can offer this feature without exposing a security hole? Well it seems that they have managed to “open the box” for this feature in Version 4 on a secure and very easy to use way.

  • Silverlight 4: Drag&drop with EventToCommand

    0 comments  /  posted by  Silverlight Show  on  Dec 18, 2009 (6 months ago)
    Laurent Bugnion demonstrates how to use EventToCommand in the case of a drag&drop operation in Silverlight 4.

    One of the MVVM Light Toolkit’s user requested that I add the possibility to pass the EventArgs of an event to the ICommand that it is bound to through the EventToCommand trigger. At first I was a bit reluctant because it seems like a transgression of the rule that says you should avoid to have too much knowledge about the UI layer in the ViewModel. For example, if you have a RelayCommand in the ViewModel that expects a MouseEventArgs, it kinds of binds you to a certain kind of UI element, which is not super clean.

  • 3 comments  /  posted by  Andrej Tozon  on  Dec 16, 2009 (6 months ago)

    Whenever a new version of Silverlight is released, I start examining its features from two perspectives: how would my current (and planned) LOB applications benefit from using these new features, and what cool new things can I build to entertain my children.

    This article will guide you through the process of creating a doodling application (you know, for kids ;)), while covering some of the most visible (or not) new features, coming with Silverlight 4. But this is not just about new features, it’s about how they are prepared and served.

  • Adding Images on Silverlight 4 using drag and drop and the web camera

    0 comments  /  posted by  Silverlight Show  on  Dec 07, 2009 (6 months ago)

    Al Pascual demonstrates the Drag and Drop support in Silverlight 4 by creating a simple test application.

    Silverlight 4 brings a few features that I could use since version 2, the biggest improvement in my case is Drag and Drop support, I really see many different use cases for that particular feature. I created a little test to see how it works and how much code is required to use. The use case is simple, drag and drop an image into a map and added into the graphic layer at the position dropped.


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