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  • How could I make this display for listbox?

    - by baron
    Hello everyone, I have a databound listbox which is actually displaying two columns of data. It is displayed as follows: <UserControl.Resources> <DataTemplate x:Key="AlignedPairs"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="*" /> <ColumnDefinition Width="Auto" /> <ColumnDefinition Width="10" /> <ColumnDefinition Width="*" /> </Grid.ColumnDefinitions> <TextBlock Text="{Binding Fruits}" Grid.Column="0" /> <TextBlock Text="->" TextAlignment="Center" Grid.Column="1" /> <TextBlock Text="{Binding Colors}" Grid.Column="3" /> </Grid> </DataTemplate> </UserControl.Resources> <ListBox Name="lbStuff" Grid.ColumnSpan="2" Grid.Row="1" ItemTemplate="{StaticResource AlignedPairs}"> <ListBox.ItemContainerStyle> <Style TargetType="ListBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch" /> </Style> </ListBox.ItemContainerStyle> </ListBox> Then Itemsource set in codebehind. Based on some logic however, I would like to set either a line or a item in one of the columns, e.g. a fruit to red, or the line to bold. I have code to work out which Fruit or Color I would like to differentiate (by color/bold) in the code behind, but I can't figure out, especially given the custom listbox display, how I could go about setting a particular item to a different color/bold. Does anyone have any ideas? Let me know if any further code is required. Cheers.

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  • UiElement based on another class

    - by plotnick
    I placed a control into a grid. let's say the control is derived from public class 'ButBase' which is derived in its turn from System.Windows.Controls.Button. The code normally compiles and app works just fine. But there's something really annoying. When you try to switch to xaml-design tab it will say 'The document root element is not supported by the visual designer', which is normal and I'm totally okay with that, but the thing is, that all the xaml code is underlined and VS2010 says: 'Cannot create an instance of ButBase' although still normally compiles and able to run. I've tried the same code in VS2008, it said that needs to see a public parameterless constructor in the ButBase, and even after I put one it showed the same error. What do I miss here?

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  • How i can add border to ListViewItem, ListView in GridView mode.

    - by Andrew
    Hello! I want to have a border around ListViewItem (row in my case). ListView source and columns generated during Runtime. In XAML i have this structure: <ListView Name="listViewRaw"> <ListView.View> <GridView> </GridView> </ListView.View> </ListView> During Runtime i bind listview to DataTable, adding necessary columns and bindings: var view = (listView.View as GridView); view.Columns.Clear(); for (int i = 0; i < table.Columns.Count; i++) { GridViewColumn col = new GridViewColumn(); col.Header = table.Columns[i].ColumnName; col.DisplayMemberBinding = new Binding(string.Format("[{0}]", i.ToString())); view.Columns.Add(col); } listView.CoerceValue(ListView.ItemsSourceProperty); listView.DataContext = table; listView.SetBinding(ListView.ItemsSourceProperty, new Binding()); So i want to add border around each row, and set border behavior (color etc) with DataTriggers (for example if value in 1st column = "Visible", set border color to black). Can i put border through DataTemplate in ItemTemplate? I know solution, where you manipulate with CellTemplates, but i don't really like it. I want something like this if this even possible. <DataTemplate> <Border Name="Border" BorderBrush="Transparent" BorderThickness="2"> <ListViewItemRow><!-- Put my row here, but i ll know about table structure only during runtime --></ListViewItemRow> </Border> </DataTemplate>

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  • Databinding items to Canvas

    - by Jo-wen
    I have a userControl that contains a canvas. I would like to databind items to it so they are positioned automagically. Here's a great example that shows how to databind items on a canvas, but I want it to work on my specific userControl. (I believe it's not possible to specify a userControl in a ItemsPanelTemplate)

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  • IntelliSense and Folding Editor Not Working in Visual Studio 2008 SP1 for Certain Files Only

    - by cplotts
    Ok, I have an issue that is driving me nuts. In certain xaml files only, neither IntelliSense nor the folding editor is working. I have noticed that if I delete the local namespace and add it back, the folding editor starts working. If I delete the local namespace and don't add it back, IntelliSense starts working as well. Of course, I need to remember to add that namespace declaration back before I compile and/or check in ... which is annoying. How can you fix this?

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  • Add a delay to OnContactDown events for Surface controls

    - by RTigger
    We're using the Controls.PreviewContactDown, PreviewContactUp, and PreviewContactChanged events to capture tagged items being placed, removed, and moved on the Surface, which works great in the Simulator application that comes with the surface. On an actual Surface if you moved a tagged item too quickly the cameras actually lose focus of the tag, assume it was removed, and then re-capture it when it stops moving. That provides a pretty poor experience for our clients. What I'm proposing is a way to override or create a new event that would respond to tagged item events, but not fire the event handler until after a delay... i.e. if "ContactUp" is fired, wait 100ms and THEN execute the event handler. Ideally we'd just be able to use an alternate attached property to define these event handlers, i.e. <Panel local:TagDown="TagDownEventHandler" /> And if we could get it to use ICommand objects instead of event handlers that'd be even better.

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  • Problem using Blend 3 Interaction.Behaviours in VS2010

    - by Andre Luus
    There seems to be a problem with support for the Interactivity namespace of Blend 3 in the VS2010 xaml editor. I have the following installed: VS2010 Blend 3 + Blend 3 SDK I am trying to compile a demo project that is targeted at .Net 4 Client Profile and has a reference to System.Windows.Interactivity (in the Blend 3 folder). In the object browser everything appears to be fine. I can also access Interaction.Behaviours from code-behind, but if I put the namespace xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" in the xaml file and try to use it, the intellisense is blank. If I copy something in there anyway, the compiler says: The tag 'Interaction.Behaviors' does not exist in XML namespace 'http://schemas.microsoft.com/expression/2010/interactivity'. Do I need to install Blend 4 RC or something?

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  • How to Read Device Data From COM

    - by Aamir Khurshid
    I have one device which sends data on COM port say on COM13, now i want to read that data and display it in the RichtextBox or in any text control , i have written the application with the help of IO and IO.Ports but comport.DataRecived event does not fire,even though device is sending data on that port, I have some software on which i define the port number and it successfully display data ,which insure me that data is reciving on the Port but i am unable to recive, is there any way i can read data? Regards, Aamir

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  • How does FallbackValue work with a MultiBiding?

    - by Will
    I ask because it doesn't seem to work. Assume we're binding to the following object: public class HurrDurr { public string Hurr {get{return null;}} public string Durr {get{return null;}} } Well, it would appear that if we used a MultiBinding against this the fallback value would be shown, right? <TextBlock> <TextBlock.Text> <MultiBinding StringFormat="{}{0} to the {1}" FallbackValue="Not set! It works as expected!)"> <Binding Path="Hurr"/> <Binding Path="Durr"/> </MultiBinding> </TextBlock.Text> </TextBlock> However the result is, in fact, " to the ". Even forcing the bindings to return DependencyProperty.UnsetValue doesn't work: <TextBlock xmnlns:base="clr-namespace:System.Windows;assembly=WindowsBase"> <TextBlock.Text> <MultiBinding StringFormat="{}{0} to the {1}" FallbackValue="Not set! It works as expected!)"> <Binding Path="Hurr" FallbackValue="{x:Static base:DependencyProperty.UnsetValue}" /> <Binding Path="Durr" FallbackValue="{x:Static base:DependencyProperty.UnsetValue}" /> </MultiBinding> </TextBlock.Text> </TextBlock> Tried the same with TargetNullValue, which was also a bust all the way around. So it appears that MultiBinding will never ever use FallbackValue. Is this true, or am I missing something?

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  • MVVM View-First Approach How Change View

    - by CodeWeasel
    Hi everybody, Does anybody have an idea how to change screens (views) in a MVVM View-First-Approach (The view instantiates the ViewModel: DataContext="{Binding Source={StaticResource VMLocator}, Path=Find[EntranceViewModel]}" ) For example: In my MainWindow (Shell) I show a entrance view with a Button "GoToBeach". <Window> <DockPanel> <TextBox DockPanel.Dock="Top" Text="{Binding Title}" /> <view.EntranceView DockPanel.Dock="Top" /> </DockPanel> </Window> When the button is clicked I want to get rid of the "EntranceView" and show the "BeachView". I am really curious if somebody knows a way to keep the View-First Approach and change the screen (view) to the "BeachView". I know there are several ways to implement it in a ViewModel-First Approach, but that is not the question. Perhabs I missed something in my mvvm investigation and can't see the wood for the trees... otherwise i am hoping for a inspiring discussion.

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  • xaml : Retrigger opacity animation on multiple conditions

    - by Sdry
    I have a problem figuring out how datatriggers and multidatatriggers work. I am trying to display a message, and depending on the type of message keep it displayed( + having a background), or having it fade out by a double animation on the opacity property (+ having a transparent background). My xaml view has a game object as datacontext, which has a dependency property of type GameMessage, of which the constructor looks like this: public GameMessage(bool containsMessage, string message, bool canFadeAway) { ContainsMessage = containsMessage; Message = message; CanFadeAway = canFadeAway; } pretty straight forward, I want to display the message when ContainsMessage =equals true, and trigger a fade out animation if canFadeAway equals true. But also set the background based on canFadeAway. <Canvas Name="messageCanvas" Width="300" Height="100" Style="{StaticResource fadeInOut}"> <TextBlock Name="txtMessage" Text="{Binding Path=GameMessage.Message}" Canvas.Top="25" Canvas.Left="0" Foreground="{StaticResource MessageForegroundBrush}"> </TextBlock> </Canvas> Now, the Style and triggers is where I get into trouble: <Style.Triggers> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding Path=GameMessage.ContainsMessage}" Value="True"/> <Condition Binding="{Binding Path=GameMessage.CanFadeAway}" Value="False"/> </MultiDataTrigger.Conditions> <Setter Property="Background" Value="{StaticResource MessageBackgroundBrush}" /> <Setter Property="Opacity" Value="8" /> </MultiDataTrigger> <MultiDataTrigger> <MultiDataTrigger.Conditions> <Condition Binding="{Binding Path=GameMessage.ContainsMessage}" Value="True"/> <Condition Binding="{Binding Path=GameMessage.CanFadeAway}" Value="True"/> </MultiDataTrigger.Conditions> <Setter Property="Background" Value="Transparent" /> <Setter Property="Opacity" Value="8" /> </MultiDataTrigger> <DataTrigger Binding="{Binding Path=GameMessage.CanFadeAway}" Value="True"> <DataTrigger.EnterActions> <BeginStoryboard > <Storyboard BeginTime="0:0:0" > <DoubleAnimation Storyboard.TargetProperty="Opacity" From="8" To="0" Duration="0:0:1" BeginTime="0:0:0" /> </Storyboard> </BeginStoryboard> </DataTrigger.EnterActions> <DataTrigger.ExitActions> <BeginStoryboard> <Storyboard> <DoubleAnimation Storyboard.TargetProperty="Opacity" To="8" Duration="0:0:0.1" /> </Storyboard> </BeginStoryboard> </DataTrigger.ExitActions> </DataTrigger> </Style.Triggers> </Style> The problem is in resetting the opacity when the GameMessage Property ( of type GameMessage) is of type true,msg",true, and gets replaced by a GameMessage object of the same kind. The opcacity remains 0, and messages only get restored again when I have a message of kind true,"msg,false. After the animation, the opacity is 0, and where I would expect the second multidatatrigger to set it back to 8, and then have the animation performed by the Datatrigger, it doesnt. What would be the best way to get this working ?

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  • Why does KeyDown event not have access to the current value of bound variable?

    - by Edward Tanguay
    In the example below: I start program, type text, click button, see text above. Press ENTER see text again. BUT: I start program, type text, press ENTER, see no text. It seems that the KeyDown event doesn't get access to the current value of the bound variable, as if it is always "one behind". What do I have to change so that when I press ENTER I have access to the value that is in the textbox so I can add it to the chat window? XAML: <Window x:Class="TestScroll.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window1" Height="290" Width="300" Background="#eee"> <StackPanel Margin="10"> <ScrollViewer Height="200" Width="260" Margin="0 0 0 10" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto"> <TextBlock Text="{Binding TextContent}" Background="#fff"/> </ScrollViewer> <StackPanel HorizontalAlignment="Left" Orientation="Horizontal"> <TextBox x:Name="TheLineTextBox" Text="{Binding TheLine}" Width="205" Margin="0 0 5 0" KeyDown="TheLineTextBox_KeyDown"/> <Button Content="Enter" Click="Button_Click"/> </StackPanel> </StackPanel> </Window> Code-Behind: using System; using System.Windows; using System.Windows.Input; using System.ComponentModel; namespace TestScroll { public partial class Window1 : Window, INotifyPropertyChanged { #region ViewModelProperty: TextContent private string _textContent; public string TextContent { get { return _textContent; } set { _textContent = value; OnPropertyChanged("TextContent"); } } #endregion #region ViewModelProperty: TheLine private string _theLine; public string TheLine { get { return _theLine; } set { _theLine = value; OnPropertyChanged("TheLine"); } } #endregion public Window1() { InitializeComponent(); DataContext = this; TheLineTextBox.Focus(); } private void Button_Click(object sender, RoutedEventArgs e) { AddLine(); } void AddLine() { TextContent += TheLine + Environment.NewLine; } private void TheLineTextBox_KeyDown(object sender, KeyEventArgs e) { if (e.Key == Key.Return) { AddLine(); } } #region INotifiedProperty Block public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(string propertyName) { PropertyChangedEventHandler handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } #endregion } }

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  • Focus In An ItemsControl

    - by Andrew
    I have an ItemsControl that uses a DataTemplate. The DataTemplate contains a TextBox, which can receive keyboard focus. I need to be able to move the keyboard focus from the currently focused TextBox in the DataTemplate to the next TextBox, as if the Tab key has been pressed. I've noticed that there is a UIElement.MoveFocus() method, but this begs the question as to which UIElement should be used to call the method. This is probably the reason why I haven't gotten this method to work for me... Any help would be really appreciated! Thanks, Andrew

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  • Progress Bar restarts

    - by Rishi Kasnia
    I have a DataGrid and in the Data Template of a DataGridTemplateColumn, i have added a Progress bar. now every time when mouse overs the rows of the data grid. my progress bar restarts its value from 0. I actually changes the Background and border property of the Row from triggers which i have defined in the control template of the Data Grid. Any Suggestions...

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  • How can I drag and drop a xaml activity to a WF4 rehosted designer?

    - by Louis Rhys
    I understand that the WorkflowDesigner can receive a dragged item in several ways, for example: By dragging an item from the toolbox and dropping it on the designer: an empty activity of that type will be inserted on the designer at the drop location. One can also drag an activity from the designer and drop it on another location in the designer, the dragged activity will be inserted at the drop location as well. Is it possible that similar to these two drag and drop mechanism, I can drag a xaml activity to the designer? What I have in mind is this, Let's say you have a ListView containing several xaml files. I want to be able to drag one of the ListView items (ie one of the xaml files), and when I drag it over the designer it will act as if I drag something from the toolbox (except the activity will be supplied from the xaml). I know I can create a runtime Activity from the file by using ActivityXamlServices.Load(filename), and I want this activity to be inserted at the drop location. But how to tell the application to understand this when I drag and drop?

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  • DependencyProperty ignores OnPropertyChanged();

    - by Kovpaev Alexey
    I have PointsListView and PointContainer: INotifyPropertyChanged, ICollection<Point>. public class PointContainer: INotifyPropertyChanged, ICollection<Point> { public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanged(PropertyChangedEventArgs e) { if (PropertyChanged != null) PropertyChanged(this, e); } public IEnumerable<Point> Points { get { return points.Values; } } public void Clear() { points.Clear(); OnPropertyChanged(new PropertyChangedEventArgs("Points")); } ... } For the reliability I made a binding from code: private void BindPointContainerToListView() { Binding binding = new Binding(); binding.Source = PointContainer; binding.Path = new PropertyPath("Points"); PointsListView.SetBinding(ListView.ItemsSourceProperty, binding); } Why when change PointContainer is not automatically updated PointsListView.ItemsSource. PointsListView.Items.Refresh (); solves the problem, but why does not work automatically? What am I doing wrong?

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  • WFP: How do you properly Bind a DependencyProperty to the GUI

    - by Robert Ross
    I have the following class (abreviated for simplicity). The app it multi-threaded so the Set and Get are a bit more complicated but should be ok. namespace News.RSS { public class FeedEngine : DependencyObject { public static readonly DependencyProperty _processing = DependencyProperty.Register("Processing", typeof(bool), typeof(FeedEngine), new FrameworkPropertyMetadata(true, FrameworkPropertyMetadataOptions.AffectsRender)); public bool Processing { get { return (bool)this.Dispatcher.Invoke( DispatcherPriority.Normal, (DispatcherOperationCallback)delegate { return GetValue(_processing); }, Processing); } set { this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (SendOrPostCallback)delegate { SetValue(_processing, value); }, value); } } public void Poll() { while (Running) { Processing = true; //Do my work to read the data feed from remote source Processing = false; Thread.Sleep(PollRate); } // } } } Next I have my main form as the following: <Window x:Class="News.Main" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:converter="clr-namespace:News.Converters" xmlns:local="clr-namespace:News.Lookup" xmlns:rss="clr-namespace:News.RSS" Title="News" Height="521" Width="927" Initialized="Window_Initialized" Closing="Window_Closing" > <Window.Resources> <ResourceDictionary> <converter:BooleanConverter x:Key="boolConverter" /> <converter:ArithmeticConverter x:Key="arithConverter" /> ... </ResourceDictionary> </Window.Resources> <DockPanel Name="dockPanel1" SnapsToDevicePixels="False" > <ToolBarPanel Height="37" Name="toolBarPanel" Orientation="Horizontal" DockPanel.Dock="Top" > <ToolBarPanel.Children> <Button DataContext="{DynamicResource FeedEngine}" HorizontalAlignment="Right" Name="btnSearch" ToolTip="Search" Click="btnSearch_Click" IsEnabled="{Binding Path=Processing, Converter={StaticResource boolConverter}}"> <Image Width="32" Height="32" Name="imgSearch" Source="{Resx ResxName=News.Properties.Resources, Key=Search}" /> </Button> ... </DockPanel> </Window> As you can see I set the DataContext to FeedEngine and Bind IsEnabled to Processing. I have also tested the boolConverter separately and it functions (just applies ! (Not) to a bool). Here is my Main window code behind in case it helps to debug. namespace News { /// <summary> /// Interaction logic for Main.xaml /// </summary> public partial class Main : Window { public FeedEngine _engine; List<NewsItemControl> _newsItems = new List<NewsItemControl>(); Thread _pollingThread; public Main() { InitializeComponent(); this.Show(); } private void Window_Initialized(object sender, EventArgs e) { // Load current Feed data. _engine = new FeedEngine(); ThreadStart start = new ThreadStart(_engine.Poll); _pollingThread = new Thread(start); _pollingThread.Start(); } } } Hope someone can see where I missed a step. Thanks.

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  • MVVM View Model DTOs

    - by Burt
    I have a WCF based application that uses the services to access repositories on the server side. I am passing DTOs from the server to the client and was wondering how best to make the DTOs part pf the view model. I have a workign example of just plain properties on the view model but was unsure how to deal with actual DTO objects and any possible conversion between the DTO and the Vview model properties.

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  • Binding Setter.Value from code

    - by chaiguy
    In XAML I can write something like this: <Setter Property="PropertyName" Value="{Binding ...}" /> How would I do this in code? I've constructed bindings in code before, but I can't seem to find any static ValueProperty object on the Setter class to pass to BindingOperations.SetBinding().

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  • CommandBinding broken in inner Custom Control when nesting two Custom Controls of the same type.

    - by Fredrik Eriksson
    I've done a Custom Control in form of a GroupBox but with an extra header which purpose is to hold a button or a stackpanel with buttons at the other side. I've added the a Dependency Property to hold the extra header and I've connected the customized template. Everything works fine until I put one of these controls in another one. Now the wierd stuff begins(at least in my eyes xP), the command binding in the inner control simply isn't set. I tried to use Snoop to gather some data, the see if the inherits is broken and when I clicked on the buttons which isn't doing what I want it to, boom, breakpoint triggered. So in some wierd way the Command isn't set until something that I don't know what it is, happens, which snoops triggers. I've also tried to put the buttons in the regular Header property and that works fine, but not with my own made. I could just switch places with them to make it like I want but now I'm curious to know where the problem lies... Now I wonder, what can I've missed? The control class: public class TwoHeaderedGroupBox : GroupBox { static TwoHeaderedGroupBox() { DefaultStyleKeyProperty.OverrideMetadata(typeof(TwoHeaderedGroupBox), new FrameworkPropertyMetadata(typeof(TwoHeaderedGroupBox))); } public static DependencyProperty HeaderTwoProperty = DependencyProperty.Register("HeaderTwo", typeof(object), typeof(TwoHeaderedGroupBox), new FrameworkPropertyMetadata()); public object HeaderTwo { get { return (object)GetValue(HeaderTwoProperty); } set { SetValue(HeaderTwoProperty, value);} } } And here is the Template (which by the way is created by blend from the beginning): <ControlTemplate TargetType="{x:Type Controls:TwoHeaderedGroupBox}"> <Grid SnapsToDevicePixels="true"> <Grid.ColumnDefinitions> <ColumnDefinition Width="6"/> <ColumnDefinition Width="Auto"/> <ColumnDefinition Width="*"/> <ColumnDefinition Width="6"/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> <RowDefinition Height="6"/> </Grid.RowDefinitions> <Border BorderBrush="Transparent" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.ColumnSpan="4" Grid.Column="0" CornerRadius="4" Grid.Row="1" Grid.RowSpan="3"/> <Border x:Name="Header" Grid.Column="1" Padding="3,1,3,0" Grid.Row="0" Grid.RowSpan="2" VerticalAlignment="Center"> <ContentControl Content="{TemplateBinding Header}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> </Border> <ContentPresenter Grid.ColumnSpan="2" Grid.Column="1" Margin="{TemplateBinding Padding}" Grid.Row="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> <Border BorderBrush="White" BorderThickness="{TemplateBinding BorderThickness}" Grid.ColumnSpan="4" CornerRadius="4" Grid.Row="1" Grid.RowSpan="3"> <Border.OpacityMask> <MultiBinding ConverterParameter="7" Converter="{StaticResource BorderGapMaskConverter}"> <Binding ElementName="Header" Path="ActualWidth"/> <Binding Path="ActualWidth" RelativeSource="{RelativeSource Self}"/> <Binding Path="ActualHeight" RelativeSource="{RelativeSource Self}"/> </MultiBinding> </Border.OpacityMask> <Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="3"> <Border BorderBrush="White" BorderThickness="{TemplateBinding BorderThickness}" CornerRadius="2"/> </Border> </Border> <Border x:Name="HeaderTwo" Grid.Column="2" Padding="3,5,3,5" Grid.Row="0" Grid.RowSpan="2" HorizontalAlignment="Right"> <ContentControl Content="{TemplateBinding HeaderTwo}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" DataContext="{TemplateBinding DataContext}"/> </Border> </Grid> </ControlTemplate>

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  • RelayCommand sender from ItemsControl item

    - by Padu Merloti
    I've been using MVVM's RelayCommand with success to bind actions to XAML, but I'm having a small problem with my ItemsControl. <ItemsControl ItemsSource="{Binding Devices}" > <ItemsControl.ItemTemplate> <DataTemplate> <Grid Width="100" Margin="4" > <Button Command="{Binding Path=SelectDeviceCommand}" > <Grid> <Image Source="img_small.png"></Image> <Image Source="{Binding Path=Logo}" /> </Grid> </Button> </Grid> </DataTemplate> </ItemsControl.ItemTemplate> </ItemsControl> In my view model: public RelayCommand SelectDeviceCommand { get; set; } private ObservableCollection<Device> Devices; Devices = CreateListOfDevices(); private void InitializeCommands() { SelectDeviceCommand = new RelayCommand((s) => MessageBox.Show(s.ToString())); } How do I define my SelectDeviceCommand in my view model in order to receive object that is bound to that item? My SelectDeviceCommand is not even being called... (but that I guess is because I need to make my Device a mini-viewmodel and implement the SelectDeviceCommand in it, is that correct?)

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  • Pass Data to Data Template Selector

    - by Michael Sync
    How do you guys pass the data (parameter) to DataTemplate Selector? The only one that I can think of is to use an attached property in DataTemplate Selector? Example: public class DisableWeekendsSelection : DataTemplateSelector { [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2211:NonConstantFieldsShouldNotBeVisible", Justification = "DependencyProperty")] public static readonly DependencyProperty Parameter = DependencyProperty.RegisterAttached("Parameter", typeof(ObservableCollection<Date>), typeof(DisableWeekendsSelection), new FrameworkPropertyMetadata(null, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault)); public static ObservableCollection<Date> GetParameter(DependencyObject dp) { return dp.GetValue(Parameter) as ObservableCollection<Date>; } public static void SetParameter(DependencyObject dp, ObservableCollection<Date> value) { dp.SetValue(Parameter, value); } public override DataTemplate SelectTemplate(object item, DependencyObject container) { The problem with this approach is that I'm not able to get the value of Parameter in SelectTemplate method. Any suggestion would be appreciated. Thanks in advance.

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