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  • What is the best book on Silverlight 4?

    - by mbcrump
    Silverlight/Expression 4 Books! I recently stumbled upon a post asking, “What is the best book on Silverlight 4?” In the age of the internet, it can be hard for anyone searching for a good book to actually find it. I have read a few Silverlight 4/Expression books in 2010 and decided to post the “best of” collection. Instead of reading multiple books, you can cut your list down to whatever category that you fit in. With Silverlight 5 coming soon, now is the time to get up to speed with what Silverlight 4 can offer. Be sure to read the full review at the bottom of each section. For the “Beginner” Silverlight Developer: Both of these books contains very simple applications and will get you started very fast. and Book Review: Microsoft Silverlight 4 Step by Step For the guy/gal that wants to “Master” Expression Blend 4: This is a hands-on kind of book. Victor get you started early on with some sample application and quickly deep dives into Storyboard and other Animations. If you want to learn Blend 4 then this is the place to start. Book Review: Foundation Expression Blend 4 by Victor Gaudioso If you are aiming to learn more about the Business side of Silverlight then check out the following two books: and Finally, For the Silverlight 4 guy/gal that wants to “Master” Silverlight 4, it really boils down to the following two books: and   Book Review: Silverlight 4 Unleashed by Laurent Bugnion Book Review: Silverlight 4 in Action by Pete Brown I can’t describe how much that I’ve actually learned from both of these books. I would also recommend you read these books if you are preparing for your Silverlight 4 Certification. For a complete list of all Silverlight 4 books then check out http://www.silverlight.net/learn/books/ and don’t forget to subscribe to my blog.  Subscribe to my feed CodeProject

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  • What is the equivalent of OnRender in Silverlight?

    - by John Weldon
    I'm working on porting an app from WPF to Silverlight. The app uses custom types derived from FrameworkElement (in WPF) to describe shapes, and text to be rendered on a Canvas. The WPF app root node overrides OnRender() to iterate through a collection of 'child' nodes, calling Render on each child node to build the Visual Tree. Silverlight doesn't expose OnRender, but there are hints that the same effect can be achieved using ControlTemplate. Is this the way to go, and are there any good examples of using this method available? I've done some googling (binging?) and found nothing really conclusive.

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  • [Silverlight, Navigation] Layout of elements added to a tabcontrol on a different navigation page wr

    - by sinni800
    Hello, I am developing a Silverlight client using the provided navigation template for an imageboard I developed. I have a "search" tab which lists all searches for tags which were executed. I also have a show post tab which shows (also in tab-form) posts, opened from the search tab. When I open a post from the search page, it instanciates a new control (of type UserControl) and inserts this into the ShowPost page's tabcontrol. When I switch (or get switched) to the Show Post view the layout is all messed up. The UserControl inside the tab does not stretch in the tab. When I switch tabs back and forth this is strangely fixed. The reason seems to be that the user control gets created there but has no layout to "fit to" until said layout is opened, which is too late then. You can see it here: http://aspbooru.tk/Silverlight/UI.aspx Thank you in advance...

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  • Silverlight Threading and its usage

    - by Harryboy
    Hello Experts, Scenario : I am working on LOB application, as in silverlight every call to service is Async so automatically UI is not blocked when the request is processed at server side. Silverlight also supports threading as per my understanding if you are developing LOB application threads are most useful when you need to do some IO operation but as i am not using OOB application it is not possible to access client resource and for all server request it is by default Async. In above scenario is there any usage of Threading or can anyone provide some good example where by using threading we can improve performance. I have tried to search a lot on this topic but everywhere i have identified some simple threading example from which it is very difficult to understand the real benefit. Thanks for help

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  • SIlverlight 4RC threading - can a new Thread return the UI Thread

    - by Darko Z
    Hi all, Let's say I have a situation in Silverlight where there is a background thread (guaranteed to NOT be the UI thread) doing some work and it needs to create a new thread. Something like this: //running in a background thread Thread t = new Thread(new ThreadStart(delegate{}); t.Start(); Lets also say that the UI thread at this particular time is just hanging around doing nothing. Keeping in mind that I am not that knowledgeable about the Silverlight threading model, is there any danger of the new Thread() call giving me the UI thread? The motivation or what I am trying to achieve is not important - I do not want modification to the existing code. I just want to know if there is a possibility of getting the UI thread back unexpectedly. Cheers

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  • 10013 error (AccessDenied) on Silverlight Socet application

    - by Samvel Siradeghyan
    I am writing silverlight 3 application which is working on network. It works like client-server application. There is WinForm application for server and silverlight application for client. I use TcpListener on server and connect from client to it with Socket. In local network it works fine, but when I try to use it from internet it don't connect to server. I use IP address on local network and real IP with port number for internet version. I get error 10013 AccessDenied. Port number is correct and access policy exist. Firewall is turned of. Where is the problem? Thanks.

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  • FIPS-compliant Isolated Storage in WinXP?

    - by lance
    I've read (but not tested) that Isolated Storage uses Sha1Managed, which is not FIPS-compliant? Is that accurate, and can anything be done to use Isolated Storage on a FIPS-compliant WinXP SP2 box? I've seen mention of "Isolated Storage" within both the ClickOnce and Silverlight spaces. I'd appreciate an informed answer regarding either (or both!).

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  • SilverLight 3 Beginner question: Scroll with mousewheel and zoom image with panning

    - by JP Hellemons
    Hello, I would like to make a small silverlight app which displays one fairly large image which can be zoomed in by scrolling the mouse and then panned with the mouse. it's similar to the function in google maps and i do not want to use deepzoom. here is what i have at the moment. please keep in mind that this is my first silverlight app: this app is just for me to see it's a good way to build in a website. so it's a demo app and therefor has bad variable names. the initial image is 1800px width. private void sc_MouseWheel(object sender, MouseWheelEventArgs e) { var st = (ScaleTransform)plaatje.RenderTransform; double zoom = e.Delta > 0 ? .1 : -.1; st.ScaleX += zoom; st.ScaleY += zoom; } this works, but could use some smoothing and it's positioned top left and not centered. the panning is like this: found it @ http://stackoverflow.com/questions/741956/wpf-pan-zoom-image and converted it to this below to work in silverlight Point start; Point origin; bool captured = false; private void plaatje_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) { plaatje.CaptureMouse(); captured = true; var tt = (TranslateTransform)((TransformGroup)plaatje.RenderTransform) .Children.First(tr => tr is TranslateTransform); start = e.GetPosition(canvasje); origin = new Point(tt.X, tt.Y); } private void plaatje_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) { plaatje.ReleaseMouseCapture(); captured = false; } private void plaatje_MouseMove(object sender, MouseEventArgs e) { if (!captured) return; var tt = (TranslateTransform)((TransformGroup)plaatje.RenderTransform).Children.First(tr => tr is TranslateTransform); double xVerschuiving = start.X - e.GetPosition(canvasje).X; double yVerschuiving = start.Y - e.GetPosition(canvasje).Y; tt.X = origin.X - xVerschuiving; tt.Y = origin.Y - yVerschuiving; } so the scaling isn't smooth and the panning isn't working, because when i click it, the image disappears. thanks in advanced!

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  • Capture Silverlight 4 event when panel clicked

    - by Eric J.
    I have a small Silverlight 4 app that essentially consists of a grid containing a label and a combo box. When I click the label, I replace it with a second text box so that I can edit the label (much the way you can edit the name of a Silverlight control in VS2010). I have a LostFocus event handler on the text box that will end editing when the control loses focus (restoring the updated label). Trouble is, users tend to click on the panel when they are done editing rather than on another control (or hitting Enter, which is also supported). I tried adding a left mouse down event handler to the panel. However, that only fires when the text box does not have the focus (I guess the text box captured the mouse?) Is there an approach to recognize that a non-input control was clicked that would enable me to terminate edit mode?

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  • Setting the colour scheme for a Silverlight app from an external resource

    - by Alex Angas
    I have a Silverlight 3 application containing six custom user controls. I'd like to load the colour scheme for these controls from an external resource. The code and XAML containing a default colour scheme would be built in the XAP. Then a parameter on the object tag would contain a URL from where alternate colours can be dynamically loaded. By the way, the Silverlight 3 application theme feature could be used if that's possible but is really overkill. Only colours need to be changed. Is this possible and how would you recommend to do it?

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  • Scope of the Pages in a Silverlight application

    - by AngryHacker
    I have an app built with the Silverlight Navigation Application Template. I have a main form (e.g. MainPage.xaml) and a bunch of Silverlight Pages, which are swapped in and out of the main content area. In the MainPage.xaml, I have a DispatcherTimer which hits some Uri resources, regardless of which page I am on. Every now and then, it will inexplicably stop firing. I have an inkling that it has to do with the scope of various pages. Can pages inside the MainPage.xaml take away the scope from its parent? Or is this something much simpler?

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  • Silverlight As Transmedia Platform Silverlight TV

    I’m very excited to say that my discussion with John Papa about Silverlight as a Transmedia Storytelling Platform is live....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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  • Using initParams in Silverlight 4 project

    - by Silverlight Beginner
    I'm trying to upgrade a project that uses Silverlight 2 to use Silverlight 4 but I have problem with initparam to set domain. The old Silverlight 2 project: <form id="form1" runat="server" style="height:100%;"> <asp:ScriptManager ID="ScriptManager1" runat="server"></asp:ScriptManager> <div style="height:100%;"> <asp:Silverlight ID="Xaml1" runat="server" Source="~/ClientBin/EKAKC.xap" MinimumVersion="2.0.31005.0" Width="100%" Height="100%" /> </div> </form> And from Default.aspx.cs: Xaml1.InitParameters += "Domain=" + domain; The new Silverlight 4 project: <body style="height: 100%; margin: 0;"> <form id="form1" runat="server" style="height: 100%;"> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <div id="silverlightControlHost"> <object type="application/x-silverlight-2" data="data:application/x-silverlight," width="300" height="300"> <param name="source" value="EKAKC.xap"/> <param name="initParams" value="<%= string.Format("WCFReferenceURL={0}", ConfigurationManager.AppSettings["WCFReferenceURL"])%>" /> </object> </div> The Domain will not be set in my new Silverlight 4 project

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  • using Silverlight 3's HtmlPage.Window.Navigate method to reuse an already open browser window

    - by Phil
    Hi, I want to use an external browser window to implement a preview functionality in a silverlight application. There is a list of items and whenever the user clicks one of these items, it's opened in a separate browser window (the content is a pdf document, which is why it is handled ouside of the SL app). Now, to achieve this, I simply use HtmlPage.Window.Navigate(new Uri("http://www.bing.com")); which works fine. Now my client doesn't like the fact that every click opens up a new browser window. He would like to see the browser window reused every time an item is clicked. So I went out and tried implementing this: Option 1 - Use the overload of the Navigate method, like so: HtmlPage.Window.Navigate(new Uri("http://www.bing.com"), "foo"); I was assuming that the window would be reused when the same target parameter value (foo) would be used in subsequent calls. This does not work. I get a new window every time. Option 2 - Use the PopupWindow method on the HtmlPage HtmlPage.PopupWindow(new Uri("http://www.bing.com"), "blah", new HtmlPopupWindowOptions()); This does not work. I get a new window every time. Option 3 - Get a handle to the opened window and reuse that in subsequent calls private HtmlWindow window; private void navigationButton_Click(object sender, RoutedEventArgs e) { if (window == null) window = HtmlPage.Window.Navigate(new Uri("http://www.bing.com"), "blah"); else window.Navigate(new Uri("http://www.bing.com"), "blah"); if (window == null) MessageBox.Show("it's null"); } This does not work. I tried the same for the PopupWindow() method and the window is null every time, so a new window is opened on every click. I have checked both the EnableHtmlAccess and the IsPopupWindowAllowed properties, and they return true, as they should. Option 4 - Use Eval method to execute some custom javascript private const string javascript = @"var popup = window.open('', 'blah') ; if(popup.location != 'http://www.bing.com' ){ popup.location = 'http://www.bing.com'; } popup.focus();"; private void navigationButton_Click(object sender, RoutedEventArgs e) { HtmlPage.Window.Eval(javascript); } This does not work. I get a new window every time. option 5 - Use CreateInstance to run some custom javascript on the page private void navigationButton_Click(object sender, RoutedEventArgs e) { HtmlPage.Window.CreateInstance("thisIsPlainHell"); } and in my aspx I have function thisIsPlainHell() { var popup = window.open('http://www.bing.com', 'blah'); popup.focus(); } Guess what? This does work. The only thing is that the window behaves a little strange and I'm not sure why: I'm behind a proxy and in all other scenarios I'm being prompted for my password. In this case however I am not (and am thus not able to reach the external site - bing in this case). This is not really a huge issue atm, but I just don't understand what's goign on here. Whenever I type another url in the address bar of the popup window (eg www.google.com) and press enter, it opens up another window and prompts me for my proxy password. As a temporary solution option 5 could do, but I don't like the fact that Silverlight is not able to manage this. One of the main reasons my client has opted for Silverlight is to be protected against all the browser specific hacking that comes with javascript. Am I doing something wrong? I'm definitely no javascript expert, so I'm hoping it's something obvious I'm missing here. Cheers, Phil

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  • Custom UserControl property not being set via XAML DataBinding in Silverlight 4

    - by programatique
    I have a custom user control called GoalProgressControl. Another user control contains GoalProgressControl and sets its GoalName attribute via databinding in XAML. However, the GoalName property is never set. When I check it in debug mode GoalName remains "null" for the control's lifetime. How do I set the GoalName property? Is there something I am doing incorrectly? I am using .NET Framework 4 and Silverlight 4. I am relatively new to XAML and Silverlight so any help would be greatly appreciated. I have attempted to change GoalProgressControl.GoalName into a POCO property but this causes a Silverlight error, and my reading leads me to believe that databound properties should be of type DependencyProperty. I've also simplified my code to just focus on the GoalName property (the code is below) with no success. Here is GoalProgressControl.xaml: <UserControl x:Class="GoalView.GoalProgressControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" DataContext="{Binding RelativeSource={RelativeSource Self}}" Height="100"> <Border Margin="5" Padding="5" BorderBrush="#999" BorderThickness="1"> <TextBlock Text="{Binding GoalName}"/> </Border> </UserControl> GoalProgressControl.xaml.cs: public partial class GoalProgressControl : UserControl, INotifyPropertyChanged { public GoalProgressControl() { InitializeComponent(); } public event PropertyChangedEventHandler PropertyChanged; public void NotifyPropertyChanged(string propertyName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } public static DependencyProperty GoalNameProperty = DependencyProperty.Register("GoalName", typeof(string), typeof(GoalProgressControl), null); public string GoalName { get { return (String)GetValue(GoalProgressControl.GoalNameProperty); } set { base.SetValue(GoalProgressControl.GoalNameProperty, value); NotifyPropertyChanged("GoalName"); } } } I've placed GoalProgressControl on another page: <Grid Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2" Margin="5" Background="#eee" Height="200"> <Border BorderBrush="#999" BorderThickness="1" Background="White"> <StackPanel> <hgc:SectionTitleBar x:Name="ttlGoals" Title="Personal Goals" ImageSource="../Images/check.png" Uri="/Pages/GoalPage.xaml" MoreVisibility="Visible" /> <ItemsControl ItemsSource="{Binding Path=GoalItems}"> <ItemsControl.ItemTemplate> <DataTemplate> <!--TextBlock Text="{Binding Path=[Name]}"/--> <goal:GoalProgressControl GoalName="{Binding Path=[Name]}"/> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> </StackPanel> </Border> </Grid> Please note the commented out "TextBlock" item above. If I comment in the TextBlock and comment out the GoalProgressControl, the binding works correctly and the TextBlock shows the GoalName correctly. Also, if I replace the "GoalName" property above with a simple text string (ex "hello world"), the control renders correctly and "hello world" is shown on the control when it renders.

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  • AreaDataPoint in SL3 Chart is Fixed Size

    - by Wonko the Sane
    In Silverlight 3, it appears that the AreaDataPoint template ignores any size set in its ControlTemplate. <ControlTemplate TargetType="chartingTK:AreaDataPoint"> <Grid x:Name="Root" Opacity="1"> <!-- Width and Height are ignored --> <Ellipse Width="75" Height="25" StrokeThickness="{TemplateBinding BorderThickness}" Stroke="OrangeRed" Fill="{TemplateBinding Background}"/> </Grid> </ControlTemplate> Does anybody know of a workaround?

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  • COM Object Method Invoke Exception - Silverlight 4

    - by Adam Driscoll
    I'm trying to use the new AutomationFactory provided with Silverlight 4 to call a .NET COM class. .NET COM-Exposed Class: public class ObjectContainer { public bool GetObject([Out, MarshalAs((UnmanagedType.IUnknown)] out object obj) { obj = new SomeOtherObj(); return true; } } Silverlight Assembly: dynamic objectContainer; try { objectContainer = AutomationFactory.GetObject(ProgId); } catch { objectContainer = AutomationFactory.CreateObject(ProgId); } object obj; if (!objectContainer.GetObject(out obj)) { throw new Exception(); } When I call objectContainer.GetObject(out obj) an exception is thrown stating: Value does not fall within the expected range. at MS.Internal.ComAutomation.ComAutomationNative.CheckInvokeHResult(UInt32 hr, String memberName, String exceptionSource, String exceptionDescription, String exceptionHelpFile, UInt32 exceptionHelpContext) at MS.Internal.ComAutomation.ComAutomationNative.Invoke(Boolean tryInvoke, String memberName, ComAutomationInvokeType invokeType, ComAutomationInteropValue[] rgParams, IntPtr nativePeer, ComAutomationInteropValue& returnValue) at MS.Internal.ComAutomation.ComAutomationObject.InvokeImpl(Boolean tryInvoke, String name, ComAutomationInvokeType invokeType, Object& returnValue, Object[] args) at MS.Internal.ComAutomation.ComAutomationObject.Invoke(String name, ComAutomationInvokeType invokeType, Object[] args) at System.Runtime.InteropServices.Automation.AutomationMetaObjectProvider.TryInvokeMember(InvokeMemberBinder binder, Object[] args, Object& result) at System.Runtime.InteropServices.Automation.AutomationMetaObjectProviderBase.<.cctorb__4(Object obj, InvokeMemberBinder binder, Object[] args) at CallSite.Target(Closure , CallSite , Object , String , Object& ) at CallSite.Target(Closure , CallSite , Object , String , Object& ) at ApplicationModule.ObjectContainer.GetObject() Wha's the deal?

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  • Silverlight ScriptableMember in Firefox 'Content is undefined' error.

    - by Sergey Mirvoda
    Recently I'm learned how to call SIlverlight methods from JavaScript. All works fine (even in Chrome !). But in FireFox 3 (3.6.4) registered Page object is undefined. My Code is very simple silverlight [ScriptableMember] public bool HasFilter() { return true; } And in MainPage constructor public MainPage() { InitializeComponent(); HtmlPage.RegisterScriptableObject("Page",this); LayoutRoot.DataContext = viewModel; Loaded += OnLoaded; } JavaScript <head> <script type="text/javascript"> function UpdateFilter() { var sl = document.getElementById('SilverlightChartControl'); alert(sl); alert(sl.Content.Page.HasFilter()); } </script> </head> <body> <a href="#" id="resize" onclick="UpdateFilter(); return false;">TEST</a> </body>

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