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  • [FLEX] Images won't dynamically refresh

    - by Bridget
    I am writing a Flex application to receive xml from an httpservice. That works because I can populate a datagrid with the information. The xml sends image pathnames. A combobox sends a new HttpService call onChange. This repopulates the datagrid and puts new images in the folder that flex is accessing. I want to dynamically change the image without changing the pathname of the image. <mx:Canvas id="borderCanvas"><mx:Canvas id="dropCanvas"> <mx:Tile id="adTile"><mx:Image></mx:Image> </mx:Tile></mx:Canvas></mx:Canvas> This is my component. I assign my Image sources using this code: var i:Number = 0; while ( i <= dg_conads.rowCount){ var img:Image = new Image(); img.source = null; img.source = imageSource+i+".jpg"; adTile.addChild(img); i++; } My biggest problem is that the images are not refreshing. I get the same image even though I've prevented caching from the HTML wrapper and the ASP.Net website. The image automatically loads in the folder and refreshes in the folder but I can't get the image to refresh in the application. I've tried removeAllChildren(); delete(adTile.getChildAt(0)); and neither worked.

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  • WPF Binding Path=/ not working?

    - by Mark
    I've set up my DataContext like this: <Window.DataContext> <c:DownloadManager /> </Window.DataContext> Where DownloadManager is Enumerable<DownloadItem>. Then I set my DataGrid like this: <DataGrid Name="dataGrid1" ItemsSource="{Binding Path=/}" ... So that it should list all the DownloadItems, right? So I should be able to set my columns like: <DataGridTextColumn Binding="{Binding Path=Uri, Mode=OneWay}" Where Uri is a property of the DownloadItem. But it doesn't seem to like this. In the visual property editor, it doesn't recognize Uri is a valid property, so I'm guessing I'm doing something wrong. It was working before, when I had the data grid binding to Values, but then I took that enumerable out of the DownloadManager and made itself enumerable. How do I fix this? PS: By "doesn't work" I mean it doesn't list any items. I've added some to the constructor of the DM, so it shouldn't be empty.

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  • Load Empty Database table

    - by john White
    I am using SQLexpress and VS2008. I have a DB with a table named "A", which has an IdentitySpecification column named ID. The ID is auto-incremented. Even if the row is deleted, the ID still increases. After several data manipulation, the current ID has reached 15, for example. When I run the application if there's at least 1 row: if I add a new row, the new ID is 16. Everything is fine. If the table is empty (no row): if I add a new row, the new ID is 0, which is an error (I think). And further data manipulation (eg. delete or update) will result in an unhandled exception. Has anyone encountered this? PS. In my table definition, the ID has been selected as follow: Identity Increment = 1; Identity Seed =1; The DB load code is: dataSet = gcnew DataSet(); dataAdapter->Fill(dataSet,"A"); dataTable=dataSet->Tables["A"]; dbConnection->Open(); The Update button method dataAdapter->Update(dataSet,"tblInFlow"); dataSet->AcceptChanges(); dataTable=dataSet->Tables["tblInFlow"]; dataGrid->DataSource=dataTable; If I press Update: if there's at least a row: the datagrid view updates and shows the table correctly. if there's nothing in the table (no data row), the Add method will add a new row, but from ID 0. If I close the program and restart it again: the ID would be 16, which is correct. This is the add method row=dataTable->NewRow(); row["column1"]="something"; dataTable->Rows->Add(row); dataAdapter->Update(dataSet,"A"); dataSet->AcceptChanges(); dataTable=dataSet->Tables["A"];

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  • WPF DataBinding, CollectionViewSource, INotifyPropertyChanged

    - by plotnick
    First time when I tried to do something in WPF, I was puzzled with WPF DataBinding. Then I studied thorougly next example on MSDN: http://msdn.microsoft.com/en-us/library/ms771319(v=VS.90).aspx Now, I quite understand how to use Master-Detail paradigm for a form which takes data from one source (one table) - both for master and detailed parts. I mean for example I have a grid with data and below the grid I have a few fields with detailed data of current row. But how to do it, if detailed data comes from different but related tables? for example: you have a Table 'Users' with columns - 'id' and 'Name'. You also have another table 'Pictures' with columns like 'id','Filename','UserId'. And now, using master-detail paradigm you have to built a form. And every time when you chose a row in a Master you should get all associated pictures in Details. What is the right way to do it? Could you please show me an example?

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  • IIS 7, Asp.Net 4: Server cannot append header after HTTP headers have been sent?

    - by Amitabh
    I am getting the following warnings on the Event Log for a Asp.Net WebSite running on IIS 7. Exception information: Exception type: HttpException Exception message: Server cannot append header after HTTP headers have been sent. at System.Web.Hosting.ISAPIWorkerRequest.SendUnknownResponseHeader(String name, String value) at System.Web.HttpResponse.WriteHeaders() at System.Web.HttpResponse.Flush(Boolean finalFlush) at System.Web.HttpRuntime.FinishRequest(HttpWorkerRequest wr, HttpContext context, Exception e) I tried to debug the WebSite but it just does not show in debugger. The web page which has got this issue contains the following. Its a content page with a Master page. It has a grid inside an UpdatePanel which is Triggered by a Timer. On the specified time grid data is refreshed. Everytime this happens we see a new warning in the EventLog. What is the best way to go about this issue?

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  • WPF - simple relative path - FindAncestor

    - by user309392
    In the XAML below the ToolTip correctly binds to RelativeSource Self. However, I can't for the life of me work out how to get the TextBlock in the commented block to refer to SelectedItem.Description <Controls:RadComboBoxWithCommand x:Name="cmbPacking" Grid.Row="2" Grid.Column="5" ItemsSource="{Binding PackingComboSource}" DisplayMemberPath="DisplayMember" SelectedValuePath="SelectedValue" SelectedValue="{Binding ElementName=dataGrid1, Path=SelectedItem.PackingID}" ToolTip="{Binding RelativeSource={RelativeSource Self}, Path=SelectedItem.Description}" IsSynchronizedWithCurrentItem="True" Style="{StaticResource comboBox}"> <!-- <Controls:RadComboBoxWithCommand.ToolTip>--> <!-- <TextBlock Text="{Binding RelativeSource={RelativeSource Self}, Path=SelectedItem.Description}" TextWrapping="Wrap" Width="50"/>--> <!-- </Controls:RadComboBoxWithCommand.ToolTip>--> </Controls:RadComboBoxWithCommand> I would appreciate any suggestions Thanks - Jeremy

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  • How to disable scrolling in ScrollViewer while Ctrl is pressed

    - by zunyite
    I'd like to implement zoom function while Ctrl key is pressed. But the MouseWheel event is not trigger while the mouse is over the ScrollView. Is there any way to do it? ps:SilverLight 4.0 <UserControl x:Class="SilverlightApplication11.MainPage" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="400"> <Grid x:Name="LayoutRoot" Background="White"> <ScrollViewer Background="Gray" MouseWheel="ScrollViewer_MouseWheel" x:Name="scrollViewer"> <Rectangle Width="200" Height="2000" MouseWheel="ScrollViewer_MouseWheel" Fill="AliceBlue" /> </ScrollViewer> </Grid> private void ScrollViewer_MouseWheel(object sender, MouseWheelEventArgs e) { if (Keyboard.Modifiers.HasFlag(ModifierKeys.Control)) { zoom+=0.1; e.Handled = true; } }

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  • Silverlight RelativeSource of TemplatedParent Binding within a DataTemplate, Is it possible?

    - by Matt.M
    I'm trying to make a bar graph Usercontrol. I'm creating each bar using a DataTemplate. The problem is in order to compute the height of each bar, I first need to know the height of its container (the TemplatedParent). Unfortunately what I have: Height="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Height, Converter={StaticResource HeightConverter}, Mode=OneWay}" Does not work. Each time a value of NaN is returned to my Converter. Does RelativeSource={RelativeSource TemplatedParent} not work in this context? What else can I do to allow my DataTemplate to "talk" to the element it is being applied to? Incase it helps here is the barebones DataTemplate: <DataTemplate x:Key="BarGraphTemplate"> <Grid Width="30"> <Rectangle HorizontalAlignment="Center" Stroke="Black" Width="20" Height="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Height, Converter={StaticResource HeightConverter}, Mode=OneWay}" VerticalAlignment="Bottom" /> </Grid> </DataTemplate>

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  • WPF Auto height in code

    - by Karim
    How could I set the value of the Height property of a WPF control in C# code to "Auto"? <Grid.RowDefinitions> <RowDefinition /> <RowDefinition Height="Auto" /> <RowDefinition /> <RowDefinition Height="Auto" /> <RowDefinition /> <RowDefinition Height="Auto" /> <RowDefinition /> <RowDefinition Height="Auto" /> <RowDefinition /> </Grid.RowDefinitions> I want to reproduce this behavior in the code behind. Any ideas? Thanks in advance

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  • How to set properties of a d:DesignInstance in XAML?

    - by Scott Bilas
    I'm using the new d:DesignInstance feature of the 4.0 series WPF tools. Works great! Only issue I'm having is: how can I set properties on the instance? Given something like this: <Grid d:DataContext="{d:DesignInstance plugin:SamplePendingChangesViewModel, IsDesignTimeCreatable=True}"/> How can I set properties on the viewmodel, aside from setting them in its default ctor or routing it through some other object initializer? I gave this a try but VS gives errors on compile "d:DataContext was not found": <Grid> <d:DataContext> <d:DesignInstance IsDesignTimeCreatable="True"> <plugin:SamplePendingChangesViewModel ActiveTagIndex="2"/> </d:DesignInstance> </d:DataContext> For the moment I'm going back to using a resource and 'd:DataContext={StaticResource SampleData}', where I can set the properties in the resource. Is there a way to do it via a d:DesignInstance?

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  • WPF Memory Leak

    - by Oskar Kjellin
    I have an WPF form that I myself did not create, so I am not very good at WPF. It is leaking badly though, up to 400 MB and closing the form does not help. The problem lies in my application loading all the pictures at once. I would like to only load the ones visible at the moment. It is about 300 pictures and they are a bit large so my WPF-form suffers from loading them all. I have a DataTemplate with my own type that has a property Thumbnail. The code in the template is like this: <Image Source="{Binding Path=Thumbnail}" Stretch="Fill"/> And then I have a grid with a control that has the above template as source. The code for this control is the below. Please provide me with hints on how to optimize the code and perhaps get the only ones that are visible and only have that many controls loaded at the same time? <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="Controls:ElementFlow"> <Grid Background="{TemplateBinding Background}"> <Canvas x:Name="PART_HiddenPanel" IsItemsHost="True" Visibility="Hidden" /> <Viewport3D x:Name="PART_Viewport"> <!-- Camera --> <Viewport3D.Camera> <PerspectiveCamera FieldOfView="60" Position="0,1,4" LookDirection="0,-1,-4" UpDirection="0,1,0" /> </Viewport3D.Camera> <ContainerUIElement3D x:Name="PART_ModelContainer" /> <ModelVisual3D> <ModelVisual3D.Content> <AmbientLight Color="White" /> </ModelVisual3D.Content> </ModelVisual3D> <Viewport2DVisual3D RenderOptions.CachingHint="Cache" RenderOptions.CacheInvalidationThresholdMaximum="2" RenderOptions.CacheInvalidationThresholdMinimum="0.5"/> </Viewport3D> </Grid> </ControlTemplate> </Setter.Value> </Setter> </Style>

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  • Translation of clustering problem to graph theory language

    - by honk
    I have a rectangular planar grid, with each cell assigned some integer weight. I am looking for an algorithm to identify clusters of 3 to 6 adjacent cells with higher-than-average weight. These blobs should have approximately circular shape. For my case the average weight of the cells not containing a cluster is around 6, and that for cells containing a cluster is around 6+4, i.e. there is a "background weight" somewhere around 6. The weights fluctuate with a Poisson statistic. For small background greedy or seeded algorithms perform pretty well, but this breaks down if my cluster cells have weights close to fluctuations in the background. Also, I cannot do a brute-force search looping through all possible setups because my grid is large (something like 1000x1000). I have the impression there might exist ways to tackle this in graph theory. I heard of vertex-covers and cliques, but am not sure how to best translate my problem into their language.

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  • Why TabControl.SelectedContent != (TabControl.SelectedItem as TabItem).Content ?

    - by CannibalSmith
    The following sample shouldn't beep (in my opinion) but it does. Why? Does that mean the SelectedContent property is useless? Is it a bug in WPF? <TabControl SelectionChanged="TabControl_SelectionChanged"> <TabItem Header="Tab 1"> <Grid/> </TabItem> <TabItem Header="Tab 2"> <Grid/> </TabItem> </TabControl>   void TabControl_SelectionChanged(object sender, SelectionChangedEventArgs e) { var t = sender as TabControl; if (t.SelectedContent != (t.SelectedItem as TabItem).Content) Console.Beep(); }

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  • Silverlight 4 toolkit, charting and lineSeries is null

    - by Snake
    Hi, I create a Silverlight Chart, with the Silverlight 4 toolkit, the April release. Consider the following chart: <Grid x:Name="LayoutRoot" Background="White"> <Charting:Chart Title="Chart to test" Name="MySuperChart"> <Charting:LineSeries x:Name="MyLineSeries" Title="Something" /> </Charting:Chart> </Grid> So far so good. I can access the Series in the chart by MySuperChart.Series[0] But when I try to reference MyLineSeries, it appears to be null. Full view

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  • XAML Parsing Exception

    - by e28Makaveli
    I have a simple XAML page that load fine when it is loaded as part of any application within Visual Studio. However, when I deploy this application using ClickOnce, I get the following exception: Type : System.Windows.Markup.XamlParseException, PresentationFramework, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35 Message : Unable to cast object of type 'System.Windows.Controls.Grid' to type 'EMS.Controls.Dictionary.StatusBarControl'. Error at object 'System.Windows.Controls.Grid' in markup file 'EMS.Controls.Dictionary;component/views/statusbarcontrol.xaml'. Source : PresentationFramework Help link : LineNumber : 0 LinePosition : 0 KeyContext : UidContext : NameContext : BaseUri : pack://application:,,,/EMS.Controls.Dictionary;component/views/statusbarcontrol.xaml Data : System.Collections.ListDictionaryInternal TargetSite : Void ThrowException(System.String, System.Exception, Int32, Int32, System.Uri, System.Windows.Markup.XamlObjectIds, System.Windows.Markup.XamlObjectIds, System.Type) Stack Trace : at System.Windows.Markup.XamlParseException.ThrowException(String message, Exception innerException, Int32 lineNumber, Int32 linePosition, Uri baseUri, XamlObjectIds currentXamlObjectIds, XamlObjectIds contextXamlObjectIds, Type objectType) at System.Windows.Markup.XamlParseException.ThrowException(ParserContext parserContext, Int32 lineNumber, Int32 linePosition, String message, Exception innerException) at System.Windows.Markup.BamlRecordReader.ReadRecord(BamlRecord bamlRecord) at System.Windows.Markup.BamlRecordReader.Read(Boolean singleRecord) at System.Windows.Markup.TreeBuilderBamlTranslator.ParseFragment() at System.Windows.Markup.TreeBuilder.Parse() at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream) at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) at EMS.Controls.Dictionary.StatusBarControl.InitializeComponent() at EMS.Controls.Dictionary.StatusBarControl..ctor(IDataView content) at OCC600.ReportManager.ReportPresenter.ShowQueryView(Object arg, Boolean bringForward, Type selectedDataType) at OCC600.ReportManager.ReportPresenter..ctor(IUnityContainer container) at OCC600.ReportManager.Module.Initialize() at Microsoft.Practices.Composite.Modularity.ModuleLoader.Initialize(ModuleInfo[] moduleInfos) Inner Exception --------------- Type : System.InvalidCastException, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Message : Unable to cast object of type 'System.Windows.Controls.Grid' to type 'EMS.Controls.Dictionary.StatusBarControl'. Source : EMS.Controls.Dictionary Help link : Data : System.Collections.ListDictionaryInternal TargetSite : Void System.Windows.Markup.IComponentConnector.Connect(Int32, System.Object) Stack Trace : at EMS.Controls.Dictionary.StatusBarControl.System.Windows.Markup.IComponentConnector.Connect(Int32 connectionId, Object target) at System.Windows.Markup.BamlRecordReader.ReadConnectionId(BamlConnectionIdRecord bamlConnectionIdRecord) at System.Windows.Markup.BamlRecordReader.ReadRecord(BamlRecord bamlRecord) The XAML page is given below: xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:cdic="clr-namespace:EMS.Controls.Dictionary.Primitives" xmlns:dicutil="clr-namespace:OCC600.Infrastructure.Dictionary.Utility;assembly=EMS.Infrastructure.Dictionary" Loaded="ResultSetControl_Loaded" <StatusBarItem Margin="10,0, 10, 0"> <TextBlock Text="{Binding CountText}" Padding="5,0"/> </StatusBarItem> <StatusBarItem Margin="10,0"> <TextBlock Text="{Binding MemoryUsageText}" Padding="5,0"/> </StatusBarItem> <StatusBarItem Margin="10,0" MaxWidth="400"> <TextBlock Text="{Binding StatusReport.Summary}" Padding="5,0" /> </StatusBarItem> <ProgressBar Margin="20,0" Name="progBar" Width="150" Height="13" Visibility="Collapsed" > <ProgressBar.ContextMenu> <ContextMenu Name="ctxMenu" ItemsSource="{Binding ActiveWorkItems}" Visibility="{Binding Path=ActiveWorkItems.HasItems, Converter={StaticResource BooToVisConv}}"> <ContextMenu.ItemContainerStyle> <Style TargetType="{x:Type MenuItem}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type MenuItem}"> <StackPanel Height="20" Margin="10,0" Orientation="Horizontal" HorizontalAlignment="Left"> <TextBlock Text="{Binding Path=Name, Mode=OneTime}" Foreground="Black" VerticalAlignment="Center" HorizontalAlignment="Left" /> <ToggleButton Style="{StaticResource vistaGoldenToggleButtonStyle}" Padding="5,0" Content="Cancel" IsChecked="{Binding Cancel}" Margin="10,0,0,0" > </ToggleButton> </StackPanel> </ControlTemplate> </Setter.Value> </Setter> </Style> </ContextMenu.ItemContainerStyle> </ContextMenu> </ProgressBar.ContextMenu> </ProgressBar> <StatusBarItem Margin="10,0" MaxWidth="400" HorizontalAlignment="Right"> <StackPanel Orientation="Horizontal"> <TextBlock Text="Last Update:" Padding="5,0" /> <TextBlock Text="{Binding TimeStamp}" Padding="5,0" /> </StackPanel> </StatusBarItem> <!-- TODO: Put checkmark if all is well, or error if connection failed--> <StatusBarItem Style="{DynamicResource {ComponentResourceKey TypeInTargetAssembly=dc:Ribbon, ResourceId=StatusBarItemAlt}}" DockPanel.Dock="Right" Padding="6,0,32,0" > <cdic:SplitButton Margin="5,0" Padding="5,2" Style="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type cdic:SplitButtonResources}, ResourceId=vistaSplitButtonStyle}}" Mode="Split"> <cdic:SplitButton.ContextMenu> <ContextMenu > <MenuItem Header="Refresh Now" Command="{Binding ToggleConnectivityCmd}" CommandParameter="false"/> <MenuItem IsCheckable="True" IsChecked="{Binding ConnectState, Converter={StaticResource isFailedConverter}}" CommandParameter="{Binding RelativeSource={x:Static RelativeSource.Self}, Path=IsChecked}" Header="Work Offline" Command="{Binding ToggleConnectivityCmd}"/> </ContextMenu> </cdic:SplitButton.ContextMenu> <cdic:SplitButton.Content> <StackPanel Orientation="Horizontal"> <Image x:Name="img" Source="{Binding ConnectState, Converter={StaticResource imageConverter}}" Width="16" Height="16" HorizontalAlignment="Center" VerticalAlignment="Center"/> <TextBlock Text="{Binding ConnectState}" Padding="3,0,0,0"/> </StackPanel> </cdic:SplitButton.Content> </cdic:SplitButton> </StatusBarItem> </StatusBar> </Grid> The error just seems to have come out of no where. Any ideas? TIA.

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  • WPF Canvas Binding

    - by morsanu
    Hey guys, I'm rather new to WPF, so maybe this is a simple question. I have a class that derives from Canvas, let's call it MyCanvas. And I have a class, MyClass, that has a property of type MyCanvas. In XAML, I built a TabControl, so each TabItem binds to a MyClass object. Now, in the Content of every tab I want to display MyObject.MyCanvas. How should I do that? <TabControl.ContentTemplate> <DataTemplate> <Grid> <myCanvas:MyCanvas Focusable="true" Margin="10" > <Binding Path="Canvas"></Binding> </screenCanvas:ScreenCanvas> </Grid> </DataTemplate> </TabControl.ContentTemplate>

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  • Firefox causes extra "Not Postback" ping when postback happens

    - by Arvind
    We got weird problem in my application (asp.net). The problem happens only in Firefox. The scenario is like this.. We have grid bind with results. when I change page of the grid (postback). at that time extra "Not postback" is caused in FireFox only which actually disturb my session logic and then all goes wrong. Can anyone have idea on this? Please help me out!

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  • ScatterViewItems Containing Surface Interactive Elements

    - by James Hay
    This is an age old problem of interactive elements inside interactive elements, but I want a ScatterViewItem to contain other surface interactive elements such as a SurfaceButton or SurfaceCheckBox. I've got all my elements in there and they react to taps etc. The problem is that I only get the normal ScatterView behavior once I click on an area that does not contain a control. Is there an elegant solution to allow dragging even when the contact is on a SurfaceButton or SurfaceCheckbox? e.g. <s:ScatterView > <Grid Width="200" Height="200"> <s:SurfaceButton /> </Grid> </s:ScatterView>

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  • Why isn't TextBox.Text in WPF animatable?

    - by cplotts
    Ok, I have just run into something that is really catching me off-guard. I was helping a fellow developer with a couple of unrelated questions and in his project he was animating text into some TextBlock(s). So, I went back to my desk and recreated the project (in order to answer his questions), but I accidentally used TextBox instead of TextBlock. My text wasn't animating at all! (A lot of help, I was!) Eventually, I figured out that his xaml was using TextBlock and mine was using TextBox. What is interesting, is that Blend wasn't creating key frames when I was using TextBox. So, I got it to work in Blend using TextBlock(s) and then modified the xaml by hand, converting the TextBlock(s) into TextBox(es). When I ran the project, I got the following error: InvalidOperationException: '(0)' Storyboard.TargetProperty path contains nonanimatable property 'Text'. Well, it seems as if Blend was smart enough to know that ... and not generate the key frames in the animation (it would just modify the value directly on the TextBox). +1 for Blend. So, the question became: why isn't TextBox.Text animatable? The usual answer is that the particular property you are animating isn't a DependencyProperty. But, this isn't the case, TextBox.Text is a DependencyProperty. So, now I am bewildered! Why can't you animate TextBox.Text? Let me include some xaml to illustrate the problem. The following xaml works ... but uses TextBlock(s). <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="TextBoxTextQuestion.MainWindow" x:Name="Window" Title="MainWindow" Width="640" Height="480" > <Window.Resources> <Storyboard x:Key="animateTextStoryboard"> <StringAnimationUsingKeyFrames Storyboard.TargetProperty="(TextBlock.Text)" Storyboard.TargetName="textControl"> <DiscreteStringKeyFrame KeyTime="0:0:1" Value="Goodbye"/> </StringAnimationUsingKeyFrames> </Storyboard> </Window.Resources> <Window.Triggers> <EventTrigger RoutedEvent="FrameworkElement.Loaded"> <BeginStoryboard Storyboard="{StaticResource animateTextStoryboard}"/> </EventTrigger> </Window.Triggers> <Grid x:Name="LayoutRoot"> <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center"> <TextBlock x:Name="textControl" Text="Hello" FontFamily="Calibri" FontSize="32"/> <TextBlock Text="World!" Margin="0,25,0,0" FontFamily="Calibri" FontSize="32"/> </StackPanel> </Grid> </Window> The following xaml does not work and uses TextBox.Text: <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" x:Class="TextBoxTextQuestion.MainWindow" x:Name="Window" Title="MainWindow" Width="640" Height="480" > <Window.Resources> <Storyboard x:Key="animateTextStoryboard"> <StringAnimationUsingKeyFrames Storyboard.TargetProperty="(TextBox.Text)" Storyboard.TargetName="textControl"> <DiscreteStringKeyFrame KeyTime="0:0:1" Value="Goodbye"/> </StringAnimationUsingKeyFrames> </Storyboard> </Window.Resources> <Window.Triggers> <EventTrigger RoutedEvent="FrameworkElement.Loaded"> <BeginStoryboard Storyboard="{StaticResource animateTextStoryboard}"/> </EventTrigger> </Window.Triggers> <Grid x:Name="LayoutRoot"> <StackPanel Orientation="Vertical" HorizontalAlignment="Center" VerticalAlignment="Center"> <TextBox x:Name="textControl" Text="Hello" FontFamily="Calibri" FontSize="32"/> <TextBox Text="World!" Margin="0,25,0,0" FontFamily="Calibri" FontSize="32"/> </StackPanel> </Grid> </Window>

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  • Android GridView - update View based on position

    - by Chris
    I have a GridView, using a custom adapter (myAdapter extends BaseAdapter), where each item in the grid holds an ImageButton. getView() is working fine. However, from elsewhere in my code, how can I update the image (setImageResource) for one particular item in the grid based on its position in the GridView? So far, I've added this to my adapter class: public void changeImage() { Log.d(TAG, "Image change"); this.ImageButton.setImageResource(R.drawable.newImage); } And would like to write something like this: mygridview.getItemIdAtPosition(20).changeImage(); (doesn't compile).

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  • Clickable link in RadGrid column

    - by brainimus
    I have a RadGrid where a column in the grid holds a URL. When a put a value in the column I can see the URL but the URL is not clickable (to go to the URL). How can I make the URL clickable? Here is a rough example of what I'm doing now: DataTable table = new DataTable(); DataRow row = table.Rows[0]; row["URL"] = "http://www.google.com"; grid.DataSource = table; In addition I'd really like to show specific text instead of the URL. Something similar to <a href="http://www.google.com">Link</a> in HTML. Is there anyway to do this?

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  • What's viewport mean to the jQuery guys?

    - by justSteve
    I came here intent on asking a 'how do i' type question focused on a particular UI problem i have to solve and i started using the term 'viewport'. Seems there's lots of contexts that tag evokes. Before i outline mine i should ask - is there a generally recognized consensus as to what a 'viewport' is? Any gallery or object browser that focuses on a UI principle where multiple frames/panes show feeds of different graphs where each feed might be a complex grid/graph? I'm imagining something where my page may open with a half dozen different grids (tabular data) stay updated via ajax interactions with various servers. UI elements provide control scale up or down a given grid with a quasi accordion slide kinda thingie. For example, one click on a scale up-or-down control would rescale the other viewports in the opposite direction. More clicks - more pronounced effect. So my 'how do i' question morphs into a 'how have others...' thx

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  • Can the MVVM-Light ViewModelLocator be used in nested ViewModels?

    - by dthrasher
    The Visual Studio 2008 Designer doesn't seem to like UserControls that reference the MVVM-Light ViewModelLocator. I get an error message like: Could not create an instance of type 'MyUserControl'. For example, the following XAML will cause this behavior if MyUserControl uses the ViewModelLocator to establish its DataContext. <Page x:Class="MyProject.Views.MainView" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:Views="clr-namespace:MyProject.Views" > <Grid> <Views:MyUserControl/> </Grid> </Page> Is the ViewModelLocator only meant to be used in top-level Views?

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  • Choice of a deleted element at ListBox control

    - by Neir0
    Hi I have created a listbox control with following DataTemplate <DataTemplate x:Key="lb_Itemtemplate"> <DockPanel> <TextBlock Text="{Binding}" DockPanel.Dock="Left" /> <Button DockPanel.Dock="Right" Template="{StaticResource ButtonTemplate }" Width="20" Margin=" 0,1,1,10" >Delete </Button> <Button DockPanel.Dock="Right" Template="{StaticResource ButtonTemplate }" Width="20" Margin="0,1,1,10" >Highlight </Button> </DockPanel> </DataTemplate> <ListBox Name="listBox1" Grid.Column="0" Grid.Row="1" DataContext="{Binding ElementName=cb_fields, Path=SelectedItem}" ItemsSource="{Binding Path=PositiveXPathExpressions}" ItemTemplate="{StaticResource lb_Itemtemplate}" /> I want to delete element from "PositiveXPathExpressions" collection when user clicked on button "delete" but How i can decide which element i must to delete?

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  • ComboBox doesn't fire SelectionChanged event

    - by Budda
    Subj. I am using Silverlight 4 with VS2010, here is a source code: <ComboBox Grid.Row="4" Grid.Column="1" Name="Player2All" MinWidth="50" ItemsSource="{Binding PlayersAll}" SelectionChanged="Player2All_SelectionChanged"> <ComboBox.ItemTemplate> <DataTemplate> <TextBlock Text="{Binding ShortName}"/> </DataTemplate> </ComboBox.ItemTemplate> </ComboBox> Here is code behind function: private void Player2All_SelectionChanged(object sender, SelectionChangedEventArgs e) { OpenFileDialog ofd = new OpenFileDialog(); ofd.ShowDialog(); string strPlayerSelected = sender.ToString(); DebugTextBlock.Text = "hoho"; } This function is not called when I change selected item... Why? How can I get that workable? many thanks for any help.

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