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  • Keyboard Animation Issues When Calling becomeFirstResponder within a Modal View Controller

    - by LucasTizma
    I've been having some issues with calling -becomeFirstResponder on a UITextField contained with a view controller that is presented modally. I call this method in the modal view controller's -viewDidLoad method so that the keyboard is immediately displayed. What I expected is for both the keyboard and the modal view controller to animate from up the bottom of the screen at the same time. However, what I'm observing is the following: There is a ~0.2 second UI lag between clicking the button that calls the -presentModalViewController:animated: method on the parent view controller and when the child view controller begins to animate modally. The keyboard is immediately presented with absolutely no animation about half-way through the modal view controller's animation. Once the modal view controller's animation is complete, everything else seems to operate smoothly. Dismissing the modal view controller results in it being smoothly animated off screen (along with the keyboard, coincidentally). It's as if the keyboard's animation and the modal view controller's animation are both competing for some lower-level Core Animation resource at the same time, but I don't see why this should be happening. What further seems to corroborate this hunch is if I don't ask the UITextField to become the first responder (i.e., if I don't ask the keyboard to present itself), then there is absolutely no UI lag, and the modal view controller animates instantly. Interestingly, if I do something like [self.textField performSelector:@selector(becomeFirstResponder) withObject:nil afterDelay:0.0001]; then the animation of the keyboard happens nearly at the same time as the modal view controller's animation -- it's extremely difficult to tell that they aren't both being animated at the exact same time. Furthermore, there's no more UI lag. Has anyone experienced anything similar to this?

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  • I would like to flip my app's splash screen - how can I mimic the flipside controller's animation?

    - by Andy
    I've finally gotten a working "alpha" version of my first app installed and (mostly) working on my iPhone 3G. So excited I came into the house and danced a little jig while my wife rolled her eyes at me. Don't care - totally stoked that I figured it out on my own (with lots of help here - thanks again, guys). I've never really dabbled with or cared about animation; I'm more into utility-type apps. However, I've decided that I'd like to animate my app's opening image / default.png / splash screen similar to the flipside view controller animation - where the image spins from a view on the front to a different view on the back. I've found code for animating between views using the flipside animation, but how would I go about animating from a static *.png image to my navigation-based table view? I'm just not even sure where to start with this one - literally the first time I've ever even searched for anything graphics-related in the documentation. Any help will be appreciated. As usual, thanks in advance!

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  • SVG Animation in Python? - Any options other than Things! 0.4?

    - by ThantiK
    I recently gave my daughter some time on the computer, and she really likes a program called 'BabySmash!', and I also have another program that came with a keyboard attachment called 'Laugh, Smile & Learn' from playschool I think. I'm not a python guru by any stretch of the imagination and I kind of have it in my head that I want to create some sort of program in the spirit of these two, with vector animation and sounds. Thing is, it doesn't look like there are many options for vector animation in python. I found a library called Things! 0.4, but it's lacking in-depth documentation and seems to be more of an experiment in vector animation rather than a full blown solution. Are there any options that I'm not immediately finding? What other animation-libraries do you recommend? Even if the library isn't vector-based, ease of use is probably the strongest factor in my use.

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  • WPF unity Activation error occured while trying to get instance of type

    - by Traci
    I am getting the following error when trying to Initialise the Module using Unity and Prism. The DLL is found by return new DirectoryModuleCatalog() { ModulePath = @".\Modules" }; The dll is found and the Name is Found #region Constructors public AdminModule( IUnityContainer container, IScreenFactoryRegistry screenFactoryRegistry, IEventAggregator eventAggregator, IBusyService busyService ) : base(container, screenFactoryRegistry) { this.EventAggregator = eventAggregator; this.BusyService = busyService; } #endregion #region Properties protected IEventAggregator EventAggregator { get; set; } protected IBusyService BusyService { get; set; } #endregion public override void Initialize() { base.Initialize(); } #region Register Screen Factories protected override void RegisterScreenFactories() { this.ScreenFactoryRegistry.Register(ScreenKeyType.ApplicationAdmin, typeof(AdminScreenFactory)); } #endregion #region Register Views and Various Services protected override void RegisterViewsAndServices() { //View Models this.Container.RegisterType<IAdminViewModel, AdminViewModel>(); } #endregion the code that produces the error is: namespace Microsoft.Practices.Composite.Modularity protected virtual IModule CreateModule(string typeName) { Type moduleType = Type.GetType(typeName); if (moduleType == null) { throw new ModuleInitializeException(string.Format(CultureInfo.CurrentCulture, Properties.Resources.FailedToGetType, typeName)); } return (IModule)this.serviceLocator.GetInstance(moduleType); <-- Error Here } Can Anyone Help Me Error Log Below: General Information Additional Info: ExceptionManager.MachineName: xxxxx ExceptionManager.TimeStamp: 22/02/2010 10:16:55 AM ExceptionManager.FullName: Microsoft.ApplicationBlocks.ExceptionManagement, Version=1.0.3591.32238, Culture=neutral, PublicKeyToken=null ExceptionManager.AppDomainName: Infinity.vshost.exe ExceptionManager.ThreadIdentity: ExceptionManager.WindowsIdentity: xxxxx 1) Exception Information Exception Type: Microsoft.Practices.Composite.Modularity.ModuleInitializeException ModuleName: AdminModule Message: An exception occurred while initializing module 'AdminModule'. - The exception message was: Activation error occured while trying to get instance of type AdminModule, key "" Check the InnerException property of the exception for more information. If the exception occurred while creating an object in a DI container, you can exception.GetRootException() to help locate the root cause of the problem. Data: System.Collections.ListDictionaryInternal TargetSite: Void HandleModuleInitializationError(Microsoft.Practices.Composite.Modularity.ModuleInfo, System.String, System.Exception) HelpLink: NULL Source: Microsoft.Practices.Composite StackTrace Information at Microsoft.Practices.Composite.Modularity.ModuleInitializer.HandleModuleInitializationError(ModuleInfo moduleInfo, String assemblyName, Exception exception) at Microsoft.Practices.Composite.Modularity.ModuleInitializer.Initialize(ModuleInfo moduleInfo) at Microsoft.Practices.Composite.Modularity.ModuleManager.InitializeModule(ModuleInfo moduleInfo) at Microsoft.Practices.Composite.Modularity.ModuleManager.LoadModulesThatAreReadyForLoad() at Microsoft.Practices.Composite.Modularity.ModuleManager.OnModuleTypeLoaded(ModuleInfo typeLoadedModuleInfo, Exception error) at Microsoft.Practices.Composite.Modularity.FileModuleTypeLoader.BeginLoadModuleType(ModuleInfo moduleInfo, ModuleTypeLoadedCallback callback) at Microsoft.Practices.Composite.Modularity.ModuleManager.BeginRetrievingModule(ModuleInfo moduleInfo) at Microsoft.Practices.Composite.Modularity.ModuleManager.LoadModuleTypes(IEnumerable`1 moduleInfos) at Microsoft.Practices.Composite.Modularity.ModuleManager.LoadModulesWhenAvailable() at Microsoft.Practices.Composite.Modularity.ModuleManager.Run() at Microsoft.Practices.Composite.UnityExtensions.UnityBootstrapper.InitializeModules() at Infinity.Bootstrapper.InitializeModules() in D:\Projects\dotNet\Infinity\source\Inifinty\Infinity\Application Modules\BootStrapper.cs:line 75 at Microsoft.Practices.Composite.UnityExtensions.UnityBootstrapper.Run(Boolean runWithDefaultConfiguration) at Microsoft.Practices.Composite.UnityExtensions.UnityBootstrapper.Run() at Infinity.App.Application_Startup(Object sender, StartupEventArgs e) in D:\Projects\dotNet\Infinity\source\Inifinty\Infinity\App.xaml.cs:line 37 at System.Windows.Application.OnStartup(StartupEventArgs e) at System.Windows.Application.<.ctorb__0(Object unused) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler) 2) Exception Information Exception Type: Microsoft.Practices.ServiceLocation.ActivationException Message: Activation error occured while trying to get instance of type AdminModule, key "" Data: System.Collections.ListDictionaryInternal TargetSite: System.Object GetInstance(System.Type, System.String) HelpLink: NULL Source: Microsoft.Practices.ServiceLocation StackTrace Information at Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType, String key) at Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType) at Microsoft.Practices.Composite.Modularity.ModuleInitializer.CreateModule(String typeName) at Microsoft.Practices.Composite.Modularity.ModuleInitializer.Initialize(ModuleInfo moduleInfo) 3) Exception Information Exception Type: Microsoft.Practices.Unity.ResolutionFailedException TypeRequested: AdminModule NameRequested: NULL Message: Resolution of the dependency failed, type = "Infinity.Modules.Admin.AdminModule", name = "". Exception message is: The current build operation (build key Build Key[Infinity.Modules.Admin.AdminModule, null]) failed: The parameter screenFactoryRegistry could not be resolved when attempting to call constructor Infinity.Modules.Admin.AdminModule(Microsoft.Practices.Unity.IUnityContainer container, PhoenixIT.IScreenFactoryRegistry screenFactoryRegistry, Microsoft.Practices.Composite.Events.IEventAggregator eventAggregator, PhoenixIT.IBusyService busyService). (Strategy type BuildPlanStrategy, index 3) Data: System.Collections.ListDictionaryInternal TargetSite: System.Object DoBuildUp(System.Type, System.Object, System.String) HelpLink: NULL Source: Microsoft.Practices.Unity StackTrace Information at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, String name) at Microsoft.Practices.Unity.UnityContainer.Resolve(Type t, String name) at Microsoft.Practices.Composite.UnityExtensions.UnityServiceLocatorAdapter.DoGetInstance(Type serviceType, String key) at Microsoft.Practices.ServiceLocation.ServiceLocatorImplBase.GetInstance(Type serviceType, String key) 4) Exception Information Exception Type: Microsoft.Practices.ObjectBuilder2.BuildFailedException ExecutingStrategyTypeName: BuildPlanStrategy ExecutingStrategyIndex: 3 BuildKey: Build Key[Infinity.Modules.Admin.AdminModule, null] Message: The current build operation (build key Build Key[Infinity.Modules.Admin.AdminModule, null]) failed: The parameter screenFactoryRegistry could not be resolved when attempting to call constructor Infinity.Modules.Admin.AdminModule(Microsoft.Practices.Unity.IUnityContainer container, PhoenixIT.IScreenFactoryRegistry screenFactoryRegistry, Microsoft.Practices.Composite.Events.IEventAggregator eventAggregator, PhoenixIT.IBusyService busyService). (Strategy type BuildPlanStrategy, index 3) Data: System.Collections.ListDictionaryInternal TargetSite: System.Object ExecuteBuildUp(Microsoft.Practices.ObjectBuilder2.IBuilderContext) HelpLink: NULL Source: Microsoft.Practices.ObjectBuilder2 StackTrace Information at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.Builder.BuildUp(IReadWriteLocator locator, ILifetimeContainer lifetime, IPolicyList policies, IStrategyChain strategies, Object buildKey, Object existing) at Microsoft.Practices.Unity.UnityContainer.DoBuildUp(Type t, Object existing, String name) 5) Exception Information Exception Type: System.InvalidOperationException Message: The parameter screenFactoryRegistry could not be resolved when attempting to call constructor Infinity.Modules.Admin.AdminModule(Microsoft.Practices.Unity.IUnityContainer container, PhoenixIT.IScreenFactoryRegistry screenFactoryRegistry, Microsoft.Practices.Composite.Events.IEventAggregator eventAggregator, PhoenixIT.IBusyService busyService). Data: System.Collections.ListDictionaryInternal TargetSite: Void ThrowForResolutionFailed(System.Exception, System.String, System.String, Microsoft.Practices.ObjectBuilder2.IBuilderContext) HelpLink: NULL Source: Microsoft.Practices.ObjectBuilder2 StackTrace Information at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.ThrowForResolutionFailed(Exception inner, String parameterName, String constructorSignature, IBuilderContext context) at BuildUp_Infinity.Modules.Admin.AdminModule(IBuilderContext ) at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) 6) Exception Information Exception Type: Microsoft.Practices.ObjectBuilder2.BuildFailedException ExecutingStrategyTypeName: BuildPlanStrategy ExecutingStrategyIndex: 3 BuildKey: Build Key[PhoenixIT.IScreenFactoryRegistry, null] Message: The current build operation (build key Build Key[PhoenixIT.IScreenFactoryRegistry, null]) failed: The current type, PhoenixIT.IScreenFactoryRegistry, is an interface and cannot be constructed. Are you missing a type mapping? (Strategy type BuildPlanStrategy, index 3) Data: System.Collections.ListDictionaryInternal TargetSite: System.Object ExecuteBuildUp(Microsoft.Practices.ObjectBuilder2.IBuilderContext) HelpLink: NULL Source: Microsoft.Practices.ObjectBuilder2 StackTrace Information at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) at Microsoft.Practices.Unity.ObjectBuilder.NamedTypeDependencyResolverPolicy.Resolve(IBuilderContext context) at BuildUp_Infinity.Modules.Admin.AdminModule(IBuilderContext ) 7) Exception Information Exception Type: System.InvalidOperationException Message: The current type, PhoenixIT.IScreenFactoryRegistry, is an interface and cannot be constructed. Are you missing a type mapping? Data: System.Collections.ListDictionaryInternal TargetSite: Void ThrowForAttemptingToConstructInterface(Microsoft.Practices.ObjectBuilder2.IBuilderContext) HelpLink: NULL Source: Microsoft.Practices.ObjectBuilder2 StackTrace Information at Microsoft.Practices.ObjectBuilder2.DynamicMethodConstructorStrategy.ThrowForAttemptingToConstructInterface(IBuilderContext context) at BuildUp_PhoenixIT.IScreenFactoryRegistry(IBuilderContext ) at Microsoft.Practices.ObjectBuilder2.DynamicMethodBuildPlan.BuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.BuildPlanStrategy.PreBuildUp(IBuilderContext context) at Microsoft.Practices.ObjectBuilder2.StrategyChain.ExecuteBuildUp(IBuilderContext context) For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

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  • WPF Binding to change fill color of ellipse

    - by user294382
    Probably a simple question but: How do I programmatically change the color of an ellipse that is defined in XAML based on a variable? Everything I've read on binding is based on collections and lists -can't I set it simply (and literally) based on the value of a string variable? string color = "red" color = "#FF0000"

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  • WPF - ListView within listView Scrollbar problem

    - by Josh
    So I currently have a ListView "List A" who's items each have an expander control which contains another ListView "List B". The problem I am having is that sometimes List B grows so big that it extends beyond the range of List A's view area. List A's scroll bars do not pick up the fact that parts of List B are not being displayed. Is there a way to setup my xaml so that the scroll bars for List A will detect when the list inside the expander is longer then the viewing area of List A. Here is the section of code I need to modify: <TabItem Header="Finished"> <TabItem.Resources> <ResourceDictionary> <DataTemplate x:Key="EpisodeItem"> <DockPanel Margin="30,3"> <TextBlock Text="{Binding Title}" DockPanel.Dock="Left" /> <WrapPanel Margin="10,0" DockPanel.Dock="Right"> <TextBlock Text="Finished at: " /> <TextBlock Text="{Binding TimeAdded}" /> </WrapPanel> </DockPanel> </DataTemplate> <DataTemplate x:Key="AnimeItem"> <DockPanel Margin="5,10"> <Image Height="75" Width="Auto" Source="{Binding ImagePath}" DockPanel.Dock="Left" VerticalAlignment="Top"/> <Expander Template="{StaticResource AnimeExpanderControlTemplate}" > <Expander.Header> <TextBlock FontWeight="Bold" Text="{Binding AnimeTitle}" /> </Expander.Header> <ListView ItemsSource="{Binding Episodes}" ItemTemplate="{StaticResource EpisodeItem}" BorderThickness="0,0,0,0" /> </Expander> </DockPanel> </DataTemplate> </ResourceDictionary> </TabItem.Resources> <ListView Name="finishedView" ItemsSource="{Binding UploadedAnime, diagnostics:PresentationTraceSources.TraceLevel=High}" ItemTemplate="{StaticResource AnimeItem}" /> </TabItem> List A is the ListView with name "finishedView" and List B is the ListView with ItemSource "Episodes"

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  • WPF DataGrid Hide RowDetails or Unselect Row

    - by Nate Zaugg
    I have a DataGrid who's RowDetails is set to show when selected (RowDetailsVisibilityMode="VisibleWhenSelected"). Now I want to be able to get rid of it! I put a close button on the row details with this code: private void Button_Click(object sender, RoutedEventArgs e) { e.Handled = true; Button button = sender as Button; DataGridRow row = button.FindAncestor(); row.DetailsVisibility = Visibility.Collapsed; } That code gets me 90% there, but once the row details is collapsed for a given row it will not appear the next time that row is selected.

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  • WPF WriteableBitmap Memory Leak?

    - by Mario
    Hello, everyone! I'm trying to figure out how to release a WriteableBitmap memory. In the next section of code I fill the backbuffer of a WriteableBitmap with a really large amount of data from "BigImage" (3600 * 4800 px, just for testing) If I comment the lines where bitmap and image are equaled to null, the memory it´s not release and the application consumes ~230 MB, even when Image and bitmap are no longer used! As you can see at the end of the code its necessary to call GC.Collect() to release the memory. So the question is, what is the right way to free the memory used by a WriteableBitmap object? Is GC.Collect() the only way? Any help would be great. PS. Sorry for my bad english. private void buttonTest_Click(object sender, RoutedEventArgs e) { Image image = new Image(); image.Source = new BitmapImage(new Uri("BigImage")); WriteableBitmap bitmap = new WriteableBitmap( (BitmapSource)image.Source); bitmap.Lock(); // Bitmap processing bitmap.Unlock(); image = null; bitmap = null; GC.Collect(); }

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  • Webcam streaming - WPF/C#

    - by Nebo
    I noticed few similar questions already, but didn't find exatly what I want. I'm trying to do the following. Have a client and server Webcam application. Server application is on a PC with a webcam connected to it and it streams the webcam output. Client application connects to a Server and shows the webcam video. What's the best and easiest way to to this? Are there any libraries or finished projects doing this? Thanks!

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  • wpf scrollviewer scrolltoverticaloffset

    - by user279244
    The events scrolltoVerticalOffset or the scrolltoHorizontalOffset do not change the values of the scrollviewer. Please tell me at which event does the values HorizontalOffset and the VerticalOffset get changed? I have tried LayoutUpdated() method but it goes in a infinite loop. Thanks in advance

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  • WPF Toolkit DataGrid SelectionChanged Getting Cell Value

    - by Dan Bater
    Hi, Please help me, Im trying to get the value of Cell[0] from the selected row in a SelectionChangedEvent. I am only managing to get lots of different Microsoft.Windows.Controls and am hoping im missing something daft. Hoping I can get some help from here... private void datagrid_SelectionChanged(object sender, SelectionChangedEventArgs e) { Microsoft.Windows.Controls.DataGrid _DataGrid = sender as Microsoft.Windows.Controls.DataGrid; } I was hoping it would be something like... _DataGrid.SelectedCells[0].Value; However .Value isn't an option.... Many many thanks this has been driving me mad! Dan

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  • WPF 3.5 WebBrowser control and ZIndex

    - by emsieja
    I'm trying to figure out why the control does not honor ZIndex. Example 1 - which works fine <Canvas> <Rectangle Canvas.ZIndex="1" Height="400" Width="600" Fill="Yellow"/> <Rectangle Canvas.ZIndex="2" Height="100" Width="100" Fill="Red"/> </Canvas> Example 2 - which does not work <Canvas> <WebBrowser Canvas.ZIndex="1" Height="400" Width="600" Source="http://www.stackoverflow.com"/> <Rectangle Canvas.ZIndex="2" Height="100" Width="100" Fill="Red"/> </Canvas> Thanks, -- Ed

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  • WPF TreeView Virtualization

    - by Carlo
    I'm trying to figure out this virtualization feature, I'm not sure if I'm understanding it wrong or what's going on, but I'm using the ANTS memory profiler to check the number of items in a virtualized TreeView, and it just keeps increasing. I have a TreeView with 1,001 items (1 root, 1000 sub-items), and I always get up to 1,001 TreeViewItems, 1,001 ToggleButtons and 1,001 TextBlocks. Isn't virtualization supposed to re-use the items? If so, why would I have 1,001 of each? Also, the CleanUpVirtualizedItem never fires. Let me know if I'm understanding this wrong and if you have resources on how to use this. I've searched over the internet but haven't found anything useful. EDIT: Even the memory used by the tree grows from aporx. 4mb to 12mb when I expand and scroll through all the items. Let me know thanks. This is my code. XAML: <Window x:Class="RadTreeViewExpandedProblem.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300"> <Grid> <TreeView x:Name="treeView" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.CleanUpVirtualizedItem="TreeView_CleanUpVirtualizedItem"> <TreeView.ItemsPanel> <ItemsPanelTemplate> <VirtualizingStackPanel /> </ItemsPanelTemplate> </TreeView.ItemsPanel> </TreeView> </Grid> </Window> C#: public partial class Window1 : Window { public Window1() { InitializeComponent(); TreeViewItem rootItem = new TreeViewItem() { Header = "Item Level 0" }; for (int i = 0; i < 1000; i++) { TreeViewItem itemLevel1 = new TreeViewItem() { Header = "Item Level 1" }; itemLevel1.Items.Add(new TreeViewItem()); rootItem.Items.Add(itemLevel1); } treeView.Items.Add(rootItem); } private void TreeView_CleanUpVirtualizedItem(object sender, CleanUpVirtualizedItemEventArgs e) { } }

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  • In WPF: Children.Remove or Children.Clear doesn't free objects

    - by Bart Roozendaal
    I create some UIElements from code behind and was anticipating the garbage collection to clear up stuff. However, the objects are not free-ed at the time I expected it. I was expecting them to be freeed at RemoveAt(0), but they are only freed at the end of the program. How can I make the objects be freed when removed from the Children collection of the Canvas? <Window x:Class="WpfApplication1.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="300" Width="300" MouseDown="Window_MouseDown"> <Grid> <Canvas x:Name="main" /> </Grid> </Window> The code behind is: public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void Window_MouseDown(object sender, MouseButtonEventArgs e) { if (main.Children.Count == 0) main.Children.Add(new MyControl() { Background = Brushes.Yellow, Width = 100, Height = 50 }); else main.Children.RemoveAt(0); } } public class MyControl : UserControl { ~MyControl() { Debug.WriteLine("Goodbye"); } }

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  • WPF Treeview contextmenu IsChecked binding MVVM

    - by BrettRobi
    I've got a TreeView to which I associate a ContextMenu. That contextmenu has an item whose IsChecked property I want to bind to my ViewModel. Since I am using a tree each treeitem is bound to a subproperty of my ViewModel. In the VS2010 output window I am seeing this databinding error: BindingExpression path error: 'IsAutoStart' property not found on 'object' ''HostMgmtViewModel' (HashCode=12565727)'. BindingExpression:Path=IsAutoStart; DataItem='HostMgmtViewModel' This clearly shows it is trying to bind to my ViewModel and not to the treeitem's associated data. How do I bind to the correct object? Remember my contextmenu is associated with the whole TreeView not to the specific treeitem.

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  • WPF TreeView similar to Organizational chart with connecting lines

    - by Priya
    I have modified my treeview to look like an Org chart using the example shown in the Code Project website (Author Josh Smith). I need connecting lines in the treeview to make it look exact to org chart. I found references pointing to the below site http://wpfblog.info/2008/05/26/turning-a-treeview-into-an-org-chart-with-connectors/ But I am not able to view the content. Probably the webpage has been moved. Can anybody help?

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  • [WPF] Custom TabItem in TabControl

    - by Simon
    I've created CustomTabItem which inherits from TabItem and i'd like to use it while binding ObservableCollection in TabControl <TabControl ItemsSource="{Binding MyObservableCollection}"/> It should like this in XAML, but i do not know how change default type of the output item created by TabControl while binding. I've tried to create converter, but it has to do something like this inside convertin method: List<CustomTabItem> resultList = new List<CustomTabItem>(); And iterate through my input ObservableCollection, create my CustomTab based on item from collection and add it to resultList... I'd like to avoid it, bacause while creating CustomTabItem i'm creating complex View and it takes a while, so i don't want to create it always when something change in binded collection. My class extends typical TabItem and i'd like to use this class in TabControl instead of TabItem. <TabControl.ItemContainerStyle> <Style TargetType="{x:Type local:CustomTabItem}"> <Setter Property="MyProperty" Value="{Binding xxx}"/> </Style> </TabControl.ItemContainerStyle> Code above generates error that Style cannot be applied to TabItem. My main purpose is to use in XAML my own CustomTabItem and bind properties... Just like above... I've also tried to use <TabControl.ItemTemplate/> <TabControl.ContentTemaplte/> But they are just styles for TabItem, so i'll still be missing my properties wchich i added in my custom class.

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  • Setting a WPF ContextMenu's PlacementTarget property in XAML?

    - by qntmfred
    <Button Name="btnFoo" Content="Foo" > <Button.ContextMenu Placement="Bottom" PlacementTarget="btnFoo"> <MenuItem Header="Bar" /> </Button.ContextMenu> </Button> gives me a runtime error 'UIElement' type does not have a public TypeConverter class I also tried <Button Name="btnFoo" Content="Foo" > <Button.ContextMenu Placement="Bottom" PlacementTarget="{Binding ElementName=btnFoo}"> <MenuItem Header="Bar" /> </Button.ContextMenu> </Button> and that put the ContextMenu in the top left corner of my screen, rather than at the Button

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  • Clip a wpf Popup at bounds of a main window

    - by BrandonS
    From what I understand, the popup exists within it's own visual tree. However, I've noticed a few properties, Clip and ClipToBounds. What I am wanting to do is Visually clip a popup at the right and bottom edges of a window regardless of the fact that the popup is independent of the bounds of the window. I'm not using XAML, but if somebody knows how to do it in XAML, then that's fine. I can get to the main window using System.Windows.Application.Current.MainWindow. Is it possible from this to get a value that I can use to clip the popup? I'm assuming that if there is a value that I can use, then I would be able to bind the clipping of the popup to that value. This is really not necessary since after the popup initially opens, if the window gets moved or resized, the popup closes. So I would really only need to clip the popup when it opens. The reason I would like to do this is because although I am using a popup, I don't want it to appear as a popup that exists outside of the window. FYI this is for a popup calendar for a custom datebox. Any ideas, as well as clarification of misconceptions that I may have, would be greatly appreciated. Thanks, Brandon

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  • Scroll Viewer not visible in wpf DataGrid

    - by cre-johnny07
    I have a datagrid in a grid but the scrollviewer is not visibile even though I made it auto. Below in my code. I can't figure out where's the problem. <Grid Grid.Row="0" Grid.Column="0"> <Grid.RowDefinitions> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto" ></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> <RowDefinition Height="Auto"></RowDefinition> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto"></ColumnDefinition> <ColumnDefinition Width="Auto"></ColumnDefinition> </Grid.ColumnDefinitions> <TextBlock Text="Doctor Name" Grid.Row="0" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Doctor Address" Grid.Row="1" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Entry Note" Grid.Row="2" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Join Date" Grid.Row="3" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Default Discount" Grid.Row="4" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Discount Valid Till" Grid.Row="5" Grid.Column="0" Margin="5,5,0,0"/> <TextBlock Text="Employee Name" Grid.Row="6" Grid.Column="0" Margin="5,5,0,0"/> <Grid Grid.Row="7" Grid.Column="0" Grid.ColumnSpan="2"> <Grid.ColumnDefinitions> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> <ColumnDefinition></ColumnDefinition> </Grid.ColumnDefinitions> <TextBlock Text="Report Type" Grid.Row="0" Grid.Column="0" Margin="5,5,0,0"/> <ComboBox Grid.Row="0" Grid.Column="1" Name="cmbReportType" Text="{Binding CurrentEntity.ReportType}"/> <Button Grid.Row="0" Grid.Column="2" Name="btnAddDetail" Content="Add Details" Command="{Binding AddDetailsCommand}"/> </Grid> <TextBox Grid.Row="0" Grid.Column="1" Margin="5,5,0,0" Width="190" Name="txtDocName" Text="{Binding CurrentEntity.RefName}"/> <TextBox Grid.Row="1" Grid.Column="1" Margin="5,5,0,0" Width="190" Height="75" Name="txtDocAddress" Text="{Binding CurrentEntity.RefAddress}"/> <TextBox Grid.Row="2" Grid.Column="1" Margin="5,5,0,0" Width="190" Height="100" Name="txtEntryNote" Text="{Binding CurrentEntity.EntryNotes}"/> <Custom:DatePicker Grid.Row="3" Grid.Column="1" Margin="5,3,0,0" Width="125" Name="dtpJoinDate" Height="24" HorizontalAlignment="Left" VerticalAlignment="Top" SelectedDate="{Binding CurrentEntity.DateStarted}" SelectedDateFormat="Short"/> <TextBox Grid.Row="4" Grid.Column="1" Height="25" Width="75" Name="txtDefaultDiscount" HorizontalAlignment="Left" Margin="5,0,0,0" VerticalAlignment="Top" Text="{Binding CurrentEntity.DefaultDiscount}"/> <Custom:DatePicker Grid.Row="5" Grid.Column="1" Margin="5,3,0,0" Width="125" Name="dtpValidTill" Height="24" HorizontalAlignment="Left" VerticalAlignment="Top" SelectedDate="{Binding CurrentEntity.DefaultDiscountValidTill}" SelectedDateFormat="Short"/> <ComboBox Grid.Row="6" Grid.Column="1" Margin="5,3,0,0" Width="190" Height="30" Name="cmbEmployeeName" ItemsSource="{Binding Employees}" DisplayMemberPath="FullName" SelectedIndex="{Binding SelecteIndex}"> </ComboBox> <Custom:DataGrid Grid.Row="8" Grid.Column="0" Grid.ColumnSpan="2" ItemsSource="{Binding XYZ}" AutoGenerateColumns="False" Name="grdTestDept"> <Custom:DataGrid.Columns> <Custom:DataGridTextColumn Binding="{Binding dep_id}" Width="40" Header="ID"/> <Custom:DataGridTextColumn Binding="{Binding dep_name}" Width="125" Header="Name"/> <Custom:DataGridTextColumn Binding="{Binding default_data}" Width="100" Header="Default Data"/> </Custom:DataGrid.Columns> </Custom:DataGrid> </Grid> <Grid Grid.Row="0" Grid.Column="1" Grid.RowSpan="9"> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" MinWidth="43"></ColumnDefinition> <ColumnDefinition Width="Auto" MinWidth="150"></ColumnDefinition> <ColumnDefinition Width="Auto" MinWidth="50"></ColumnDefinition> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="34*" ></RowDefinition> <RowDefinition Height="337.88*"></RowDefinition> </Grid.RowDefinitions> <TextBlock Text="Name: " Grid.Row="0" Grid.Column="0" Margin="5,4,0,0" /> <cc:ValueEnabledCombo Grid.Column="1" x:Name="cmbfilEmployeeName" Width="150" Height="30" Margin="5,4,0,0" VerticalAlignment="Top" SelectedIndex="0" ItemsSource="{Binding Employees}" DisplayMemberPath="FullName" SelectedValuePath="EmployeeId" cc:ValueEnabledCombo.SelectionChanged="{Binding SelectionChangedCommand}"> </cc:ValueEnabledCombo> <Button Grid.Column="2" Name="btnReport" Width="50" Content="Report" Height="28" Margin="5,4,0,0" Command="{Binding ReportCommand}" VerticalAlignment="Top" /> <Grid Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3"> <Custom:DataGrid ItemsSource="{Binding DoctorList}" AutoGenerateColumns="False" Name="grdDoctor" ScrollViewer.HorizontalScrollBarVisibility="Auto" ScrollViewer.VerticalScrollBarVisibility="Auto"> <Custom:DataGrid.Columns> <Custom:DataGridTextColumn Binding="{Binding RefName}" Width="Auto" Header="Doctor Name"/> <Custom:DataGridTextColumn Binding="{Binding EmployeeFullName}" Width="Auto" Header="Employee Name"/> </Custom:DataGrid.Columns> </Custom:DataGrid> </Grid> </Grid> </Grid>

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  • WPF: Master - detail view with two datagrids and in MVVM

    - by EV
    Hi, I'm trying to write a master - detail control that consists of a master datagrid and the detail datagrid. My scenario was following - I used the SelectedItem and bound it to a property in ModelView. The problem is - the SelectedItem in ViewModel is never used, so I can't get the information which item is selected in a master datagrid and cannot fetch the data for thos selection. The code is below: <toolkit:DataGrid ItemsSource="{Binding}" RowDetailsVisibilityMode="VisibleWhenSelected" SelectedItem="{Binding SelectedItemHandler, Mode=TwoWay}"></toolkit:DataGrid> And in ViewModel private CustomerObjects _selectedItem; public CustomerObjects SelectedItemHandler { get { return _selectedItem; } set { OnPropertyChanged("SelectedItem"); } } The code in SelectedItemHandler is never used. What could be the problem? Should I use another approach to create master - detail in MVVM?

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  • WPF: Asynchronous progress bar

    - by SumGuy
    I'm trying to create a progress bar that will work asynchronously to the main process. I'm created a new event and invoked it however everytime I then try to perform operations on the progress bar I recieve the following error: "The calling thread cannot access this object because a different thread owns it" The following code is an attempt to send an instance of the progress bar to the event as an object, it obviously failed but it gives you an idea of what the code looks like. private event EventHandler importing; void MdbDataImport_importing(object sender, EventArgs e) { ProgressBar pb = (ProgressBar)sender; while (true) { if (pb.Value >= 200) pb.Value = 0; pb.Value += 10; } } private void btnImport_Click(object sender, RoutedEventArgs e) { importing += new EventHandler(MdbDataImport_importing); IAsyncResult aResult = null; aResult = importing.BeginInvoke(pbDataImport, null, null, null); importing.EndInvoke(aResult); } Does anyone have ideas of how to do this. Thanks in advance SumGuy.

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