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  • Silverlight 4.0 FileStream

    - by user273340
    FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read); Arguments: << path Debugging resource strings are unavailable. Often the key and arguments provide sufficient information to diagnose the problem. See http://go.microsoft.com/fwlink/?linkid=106663&Version=4.0.41108.0&File=mscorlib.dll&Key=FileSecurityState_OperationNotPermitted The line of code above has an error [FileSecurityState_OperationNotPermitted]

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  • Silverlight async calls and anonymous methods....

    - by JLewis
    I know there are a couple of debates on this kind of thing.... At any rate, I have several cases where I need to populate combobox items based on enumerations returned from the WCF service. In an effort to keep code clean, I started this approach. After looking into it more, I don't think the this works as well is initially thought... I am throwing this out to get recommendations/advice/code snippets on how you would do this or how you currently do this. I may be forced to have a seperate, non anonymous method, procedure. I hate doing this for something like this but at the moment, don't see it working another way... EventHandler<GetEnumerationsForTypeCompletedEventArgs> ev = null; ev = delegate(object eventSender, GetEnumerationsForTypeCompletedEventArgs eventArgs) { if (eventArgs.Error == null) { //comboBox.ItemsSource = eventArgs.Result; // populate combox for display purposes (for now) foreach (Enumeration e in eventArgs.Result) { ComboBoxItem cbi = new ComboBoxItem(); cbi.Content = e.EnumerationValueDisplayed; comboBox.Items.Add(cbi); } // remove event so we don't keep adding new events each time we need an enumeration proxy.GetEnumerationsForTypeCompleted -= ev; } }; proxy.GetEnumerationsForTypeCompleted += ev; proxy.GetEnumerationsForTypeAsync(sEnumerationType); Basically in this example we use ev to hold the anonymous method so we can then use ev from within the method to remove it from the events once called. This prevents this method from getting called more than one time. I suspect that the comboBox local var declared before this call, but within the same method, is not always the combobox originally intended but can't really verify that yet. I may add a tag to it to do some tests and populating to verify. Sorry if this is not clear. I can elaborate more if needed. Thanks Jeff

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  • Design workflows for WF4 in Silverlight

    - by avi1234
    Hi, My system is based on activities and I want to give the analysts users the opportunity to create dynamics flows (at runtime). The designer UI based on SL 4.0 . It looks like WorkflowFoundation is the most valuable solution but we didn`t find any WF version that fits to SL (to create the xaml in SL). Any ideas? any other capable engines? Thanks, Hec

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  • Silverlight DataPager localization

    - by gius
    Is it possible to localize DataPager's footer (Page X of Y) in Silvelright? The strings seem to be located in resources embedded in the assembly of DataPager. So how should I localize it? Unfortunately, almost nothing in the DataPager class is virtual and also many internal classes are used by it, so it is not possible (at least easily) to inherit DataPager and override the behavior.

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  • Silverlight 4.0 HyperlinkButton

    - by xscape
    Any workaround for this code? <HyperlinkButton NavigateUri="/../HTM/HTMLPage1.htm" TargetName="_blank" Click="Button_Click"> <Image Source="{Binding ImageDisplayed}" Height="50" Width="50" Margin="1"> </Image> </HyperlinkButton> When I click on the button its has an error, "cannot find...."

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  • Silverlight 4 Setting background color of textbox on focus

    - by Sean Riedel
    I am trying to set the background color of a Textbox to white on focus using a Style. My enabled Textbox has a Linear Gradient background by default: <Setter Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1"> <GradientStop Color="#e8e8e8" Offset="0.0" /> <GradientStop Color="#f3f3f3" Offset="0.25" /> <GradientStop Color="#f4f4f4" Offset="0.75" /> <GradientStop Color="#f4f4f4" Offset="1.0" /> </LinearGradientBrush> </Setter.Value> </Setter> I have a focus visual state defined: <VisualStateGroup x:Name="FocusStates"> <VisualState x:Name="Focused"> <Storyboard> <DoubleAnimation Storyboard.TargetName="FocusVisualElement" Storyboard.TargetProperty="Opacity" To="1" Duration="0"/> </Storyboard> </VisualState> Here is the rest of the Control Template: <Border x:Name="Border" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="1" Opacity="1" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}"> <Grid> <Border x:Name="ReadOnlyVisualElement" Opacity="0" Background="#5EC9C9C9"/> <Border x:Name="MouseOverBorder" BorderThickness="1" BorderBrush="Transparent"> <ScrollViewer x:Name="ContentElement" Padding="{TemplateBinding Padding}" BorderThickness="0" IsTabStop="False"/> </Border> </Grid> </Border> <Border x:Name="DisabledVisualElement" Background="#A5D7D7D7" BorderBrush="#A5D7D7D7" BorderThickness="{TemplateBinding BorderThickness}" Opacity="0" IsHitTestVisible="False"/> <Border x:Name="FocusVisualElement" Background="#A5ffffff" BorderBrush="#FF72c1ec" BorderThickness="{TemplateBinding BorderThickness}" Margin="1" Opacity="0" IsHitTestVisible="False"/> On the last Border tag is where I am trying to set the background to white (#ffffff). Right now I have the opacity at A5 which does turn the background white, however it also starts to obscure the text in the box. Any higher opacity makes the text invisible so I am pretty sure that setting the background of that border is not the right way to do this. Can I set the Background color of the ContentElement somehow through a StoryBoard? Thanks.

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  • Silverlight - use a ScrollViewer in a TextBox template

    - by vladhorby
    I'm trying to make a TextBox template and I need to include a ScrollViewer in the template - basically I want to add some content (like line numbers) that needs to scroll along with the normal text. The default template for the TextBox is like this: <Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="1" Opacity="1"> <Grid> <Border x:Name="ReadOnlyVisualElement" Background="#5EC9C9C9" Opacity="0"/> <Border x:Name="MouseOverBorder" BorderBrush="Transparent" BorderThickness="1"> <ScrollViewer x:Name="ContentElement" BorderThickness="0" IsTabStop="False" Padding="{TemplateBinding Padding}"/> </Border> </Grid> </Border> If I change the ContentElement from ScrollViewer to Border, for example, the TextBox behaves normally - i just lose the scrolling ability. Now, if I wrap the ContentElement with a ScrollViewer, it no longer displays the caret and selection - if you type, it still gets updated though. <Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="1" Opacity="1"> <Grid> <Border x:Name="ReadOnlyVisualElement" Background="#5EC9C9C9" Opacity="0"/> <Border x:Name="MouseOverBorder" BorderBrush="Transparent" BorderThickness="1"> <ScrollViewer ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto" > <Border x:Name="ContentElement" BorderThickness="0" Padding="{TemplateBinding Padding}" /> </ScrollViewer> </Border> </Grid> </Border> Any idea why this happens and how can I fix it?

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  • Silverlight 5 &ndash; What&rsquo;s New? (Including Screenshots &amp; Code Snippets)

    - by mbcrump
    Silverlight 5 is coming next year (2011) and this blog post will tell you what you need to know before the beta ships. First, let me address people saying that it is dead after PDC 2010. I believe that it’s best to see what the market is doing, not the vendor. Below is a list of companies that are developing Silverlight 4 applications shown during the Silverlight Firestarter. Some of the companies have shipped and some haven’t. It’s just great to see the actual company names that are working on Silverlight instead of “people are developing for Silverlight”. The next thing that I wanted to point out was that HTML5, WPF and Silverlight can co-exist. In case you missed Scott Gutherie’s keynote, they actually had a slide with all three stacked together. This shows Microsoft will be heavily investing in each technology.  Even I, a Silverlight developer, am reading Pro HTML5. Microsoft said that according to the Silverlight Feature Voting site, 21k votes were entered. Microsoft has implemented about 70% of these votes in Silverlight 5. That is an amazing number, and I am crossing my fingers that Microsoft bundles Silverlight with Windows 8. Let’s get started… what’s new in Silverlight 5? I am going to show you some great application and actual code shown during the Firestarter event. Media Hardware Video Decode – Instead of using CPU to decode, we will offload it to GPU. This will allow netbooks, etc to play videos. Trickplay – Variable Speed Playback – Pitch Correction (If you speed up someone talking they won’t sound like a chipmunk). Power Management – Less battery when playing video. Screensavers will no longer kick in if watching a video. If you pause a video then screensaver will kick in. Remote Control Support – This will allow users to control playback functions like Pause, Rewind and Fastforward. IIS Media Services 4 has shipped and now supports Azure. Data Binding Layout Transitions – Just with a few lines of XAML you can create a really rich experience that is not using Storyboards or animations. RelativeSource FindAncestor – Ancestor RelativeSource bindings make it much easier for a DataTemplate to bind to a property on a container control. Custom Markup Extensions – Markup extensions allow code to be run at XAML parse time for both properties and event handlers. This is great for MVVM support. Changing Styles during Runtime By Binding in Style Setters – Changing Styles at runtime used to be a real pain in Silverlight 4, now it’s much easier. Binding in style setters allows bindings to reference other properties. XAML Debugging – Below you can see that we set a breakpoint in XAML. This shows us exactly what is going on with our binding.  WCF & RIA Services WS-Trust Support – Taken from Wikipedia: WS-Trust is a WS-* specification and OASIS standard that provides extensions to WS-Security, specifically dealing with the issuing, renewing, and validating of security tokens, as well as with ways to establish, assess the presence of, and broker trust relationships between participants in a secure message exchange. You can reduce network latency by using a background thread for networking. Supports Azure now.  Text and Printing Improved text clarity that enables better text rendering. Multi-column text flow, Character tracking and leading support, and full OpenType font support.  Includes a new Postscript Vector Printing API that provides control over what you print . Pivot functionality baked into Silverlight 5 SDK. Graphics Immediate mode graphics support that will enable you to use the GPU and 3D graphics supports. Take a look at what was shown in the demos below. 1) 3D view of the Earth – not really a real-world application though. A doctor’s portal. This demo really stood out for me as it shows what we can do with the 3D / GPU support. Out of Browser OOB applications can now create and manage childwindows as shown in the screenshot below.  Trusted OOB applications can use P/Invoke to call Win32 APIs and unmanaged libraries.  Enterprise Group Policy Support allow enterprises to lock down or up the sandbox capabilities of Silverlight 5 applications. In this demo, he tore the “notes” off of the application and it appeared in a new window. See the black arrow below. In this demo, he connected a USB Device which fired off a local Win32 application that provided the data off the USB stick to Silverlight. Another demo of a Silverlight 5 application exporting data right into Excel running inside of browser. Testing They demoed Coded UI, which is available now in the Visual Studio Feature Pack 2. This will allow you to create automated testing without writing any code manually. Performance: Microsoft has worked to improve the Silverlight startup time. Silverlight 5 provides 64-bit browser support.  Silverlight 5 also provides IE9 Hardware acceleration.   I am looking forward to Silverlight 5 and I hope you are too. Thanks for reading and I hope you visit again soon.  Subscribe to my feed CodeProject

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  • Scrollable Wrappanel in Silverlight

    - by Matt
    How do I make a Wrappanel scrollable? Here's the XAML that I've been using but I get errors with it. <ItemsControl x:Name="lbMedia"> <ItemsControl.ItemsPanel> <ItemsPanelTemplate> <ScrollViewer HorizontalScrollBarVisibility="Disabled" VerticalScrollBarVisibility="Auto"> <c:WrapPanel></c:WrapPanel> </ScrollViewer> </ItemsPanelTemplate> </ItemsControl.ItemsPanel> <ItemsControl.ItemTemplate> <DataTemplate> <im:MediaManagerItem></im:MediaManagerItem> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl>

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  • Current Date in Silverlight XAML TextBlock

    - by user292110
    I am coming from Flex where you can do just about anything inside of curly braces. I am trying to get a TextBlock to display today's Date and Time without just coding it in C#. I have tried many different variations of the following with no luck. TextBlock Text="{Source=Date, Path=Now, StringFormat='dd/MM/yyyy'}" I know I could probably just set a property MyDate and bind to that but why can't I bind directly to the DateTime.Now property?

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  • Catch f5 in Silverlight?

    - by JD
    Hi to all I have an app that uses the navigation controls. What I would like is for my app to stay on the page it is showing rather than reload the whole application when f5 (refresh) is pressed? Is this at all possible? JD.

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  • Silverlight 4.0: DataTemplate Error

    - by xscape
    Im trying to get the specific template in my resource dictionary. This is my resource dictionary <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:view="clr-namespace:Test.Layout.View" xmlns:toolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Toolkit" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"><DataTemplate x:Key="LeftRightLayout"> <toolkit:DockPanel> <view:SharedContainerView toolkit:DockPanel.Dock="Left"/> <view:SingleContainerView toolkit:DockPanel.Dock="Right"/> </toolkit:DockPanel> </DataTemplate> However when it gets to XamlReader.Load private static ResourceDictionary GetResource(string resourceName) { ResourceDictionary resource = null; XDocument xDoc = XDocument.Load(resourceName); resource = (ResourceDictionary)XamlReader.Load(xDoc.ToString(SaveOptions.None)); return resource; } The type 'SharedContainerView' was not found because 'clr-namespace:Test.Layout.View' is an unknown namespace. [Line: 4 Position: 56]

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  • Some animation requests in a Silverlight application

    - by Mohit Deshpande
    I am making a flash card application. It shows the question and then a textbox for user input, all wrapped in a border or rectangle. So what I want is an animation that "flips" the rectangle or border upside-down and then their is text on the "back". Also, I want my application to APPEAR transition from one card to another by "flying off" the screen then "another" card comes in to replace the other one in the opposite direction. But actually I'm want just a little animation of the border or rectangle moving off the screen then coming back in, but in the opposite direction.

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  • Silverlight TabItem template not working correctly

    - by Savvas Sopiadis
    Hello everybody! In a SL4 application i need to restyle my TabItems (actually add a button in the header). So i took the TabItem's control template from here and added the functionality i wanted. This seems to work fine, (i could dynamically add tabitems) with one exception: i think this posted control template is behaving somehow "arbitrary": every time the mouse hoovers over a non selected TabItem header, this gets selected WHITHOUT clicking!! (afaik this is not the default behavior: the user user has to click a header to make this tabitem the selected one). I tried to find why it is behaving like this, with no luck! Is there someone who can enlighten my darkness??? Thanks in advance!

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  • Plane projection and scale causing bluring in silverlight

    - by Andy
    Ok, So I've tried to make an application which relies on images being scaled by an individual factor. These images are then able to be turned over, but the use of an animation working on the ProjectionPlane rotation. The problem comes around when an image is both scaled and rotated. For some reason it starts bluring, where a non scaled image doesn't blur. Also, if you look at the example image below (top is scaled and rotated, bottom is rotated) the projection of the top one doesn't even seem right. Its too horizontal. This this the code for the test app: <UserControl x:Class="SilverlightApplication1.Page" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Width="400" Height="300"> <Canvas x:Name="LayoutRoot" Background="White"> <Border Canvas.Top="25" Canvas.Left="50"> <Border.RenderTransform> <TransformGroup> <ScaleTransform ScaleX="3" ScaleY="3" /> </TransformGroup> </Border.RenderTransform> <Border.Projection> <PlaneProjection RotationY="45"/> </Border.Projection> <Image Source="bw-test-pattern.jpg" Width="50" Height="40"/> </Border> <Border Canvas.Top="150" Canvas.Left="50"> <Border.RenderTransform> <TransformGroup> <ScaleTransform ScaleX="1" ScaleY="1" /> </TransformGroup> </Border.RenderTransform> <Border.Projection> <PlaneProjection RotationY="45"/> </Border.Projection> <Image Source="bw-test-pattern.jpg" Width="150" Height="120"/> </Border> </Canvas> </UserControl> So if anyone could possible shed any light on why this may be happening, I'd very much appreciate it. Suggestions also welcome! :)

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  • Multiple Control Templates for a custom control in Silverlight

    - by Tada
    I am creating a custom control. The contents of the control will differ a lot when in different visual states. Can I to achieve the above, apply different control templates to the same custom control? That is define more than one control template for a custom control? If not, any clues as to how I can do this, without have as many custom/user controls as there are states?

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  • Silverlight WCF with two-way SSL security certificates

    - by dlang
    Dear All! I would like to implement a server - client software with the following security requirements: WCF-Services need to be secured with SSL and Certificates for both, the server and the client Client certificates need to be generated programmatically upon user registration Client-certificates are deployed via a an automatically generated installer-package Altough the client-certificates are self-signed (no authorized CA for the generation server) the end-user must not add the server-certificate to the trusted certificates in the local Certificate Store My problems: I cannot find any information regarding establishing such a two-way ssl-security for wcf, while the server-certificate is not signed by an authorized CA and instead is created programmatically with "makecert"... My question: Is it technically possible to implement this requirements? If yes - could you provide some hints how to get started? Thank you!

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  • Is it possible to seletively color a label in Silverlight

    - by joemoe
    For instance, if I have a label: Blah blah bladity blah I want the first 10% of this label, such that the font color should be red, and the rest should be green. This perhaps means it would color the Bl and PART of the a. Basically pixel-wise font coloring instead of character-wise. Is this possible and how would is be accomplished?

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  • Silverlight RichTextBox Disable Mouse Selection

    - by Fastidious
    I am writing a custom control based on RichTextBox that needs the ability to process MouseLeftButtonDown events but must not allow user-initiated selection (I'm doing everything programmatically). I tried setting a flag in MouseLeftButtonDown to track dragging and then continuously setting the RichTextBox.Selection to nothing in the MouseMove event but the move event isn't fired until after I release the mouse button. Any ideas on how to solve this? Thanks.

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  • Select the Initial Text in a Silverlight TextBox

    - by Dan Auclair
    I am trying to figure out the best way to select all the text in a TextBox the first time the control is loaded. I am using the MVVM pattern, so I am using two-way binding for the Text property of the TextBox to a string on my ViewModel. I am using this TextBox to "rename" something that already has a name, so I would like to select the old name when the control loads so it can easily be deleted and renamed. The initial text (old name) is populated by setting it in my ViewModel, and it is then reflected in the TextBox after the data binding completes. What I would really like to do is something like this: <TextBox x:Name="NameTextBox" Text="{Binding NameViewModelProperty, Mode=TwoWay}" SelectedText="{Binding NameViewModelProperty, Mode=OneTime}" /> Basically just use the entire text as the SelectedText with OneTime binding. However, that does not work since the SelectedText is not a DependencyProperty. I am not completely against adding the selection code in the code-behind of my view, but my problem in that case is determining when the initial text binding has completed. The TextBox always starts empty, so it can not be done in the constructor. The TextChanged event only seems to fire when a user enters new text, not when the text is changed from the initial binding of the ViewModel. Any ideas are greatly appreciated!

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