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  • Does a child control inherit its parents properties of the same name

    - by Dave Colwell
    Hi all, simple question regarding property value inheritance in UserControls. If i create a UserControl, it has some standard properties like Background, BorderBrush and BorderThickness. Within that UserControl i have a border. I want to know, if i dont specify any set value or binding for the property BorderBrush of that border, will it automatically inherit the value of BorderBrush from the parent control? Thanks!

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  • how do you set a property of a control to an address of a function in xaml?

    - by ambog36
    Hi, I have a control that has a "Filter" property that expects a function that defines how the contents of the control should be filtered. so far i am setting the filter in code behind as such: MyControl.Filter = AddressOf Filters.MyFilter In this example MyFilter is a shared function in the Filters class with the following signature: Public Shared Function MyFilter(ByVal obj As Object, ByVal text As String) As Boolean I would like to set this in xaml. I was thinking of setting the Filters.MyFilter as a static resource and setting it that way: ...Filter="{StaticResource myFilter}"/ but i cant set Filters.MyFilter as a static resource. Any ideas on how to achieve this? Thanks,

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  • undesirable cropping of Label that has been rotated 90 degrees

    - by 108980470541437452574
    Hello, I am creating 2 columns. left column will show caption of the DataGrid which will be in right column. <Grid.ColumnDefinitions> <ColumnDefinition Width="20" /> <ColumnDefinition /> </Grid.ColumnDefinitions> <Label Grid.Column="0" Name="FilterLabel"> <Label.RenderTransform> <TransformGroup> <RotateTransform Angle="-90" /> </TransformGroup> </Label.RenderTransform> </Label> the problem here is that the lable gets rendered horizontally first, and cropped at 20 pixels. So after it has been rotated, only first few letters appear rendered in left column. as soon as i make the left column wider, more letters get rendered.

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  • Disable Adding Item to Collection

    - by Wonko the Sane
    Hi All, I'm sure there's an "easy" answer to this, but for the moment it escapes me. In an MVVM application, I have a property that is a ObservableCollection, used for displaying some set of elements on the view. private readonly ObservableCollection<MyType> mMyCollection = new ObservableCollection<MyType>(); public ObservableCollection<MyType> MyCollection { get { return mMyCollection; } } I want to restrict consumers of this collection from simply using the property to add to the collection (i.e. I want to prevent this from the view): viewModel.MyCollection.Add(newThing); // want to prevent this! Instead, I want to force the use of a method to add items, because there may be another thread using that collection, and I don't want to modify the collection while that thread is processing it. public void AddToMyCollection(MyType newItem) { // Do some thread/task stuff here } Thanks, wTs

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  • What exactly does Panel.IsItemsHost do?

    - by Armentage
    I cannot find any good documentation for the Panel.IstItemsHost attached property. I see plenty of examples of people setting it on the ItemsContainer template for an ItemsControl, but the un-documentation over at MSDN does not explain why or what advantages setting property confers. I have build plenty of containers that do NOT set this property, but have not yet noticed any ill effects.

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  • How to create a shape acting like a textbox?

    - by subho100
    Please refer this control http://www.charlespetzold.com/blog/2009/10/Using-Text-Outlines-in-Silverlight.html The formattedtext control is a shape which helps to generate the shape of the text with proper geometry. I would like to make this control act like a text box with cursors and features like typing in from keyboard. Right now I use an invisible text box with a formattedtext control to act like that. But the cursor position always creates a problem when the size of the text is not equal to the size of the rendered text as shape. Can anyone please show the way to achieve this.

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  • I know I'm doing something wrong with RaiseCanExecuteChanged and CanExecute

    - by Cowman
    Well after fiddling with MVVM light to get my button to enable and disable when I want it to... I sort of mashed things together until it worked. However, I just know I'm doing something wrong here. I have RaiseCanExecuteChanged and CanExecute in the same area being called. Surely this is not how it's done? Here's my xaml <Button Margin="10, 25, 10, 25" VerticalAlignment="Center" HorizontalAlignment="Center" Width="50" Height="50" Grid.Column="1" Grid.Row="3" Content="Host"> <i:Interaction.Triggers> <i:EventTrigger EventName="Click"> <mvvmLight:EventToCommand Command="{Binding HostChat}" MustToggleIsEnabled="True" /> </i:EventTrigger> </i:Interaction.Triggers> </Button> And here's my code public override void InitializeViewAndViewModel() { view = UnityContainer.Resolve<LoginPromptView>(); viewModel = UnityContainer.Resolve<LoginPromptViewModel>(); view.DataContext = viewModel; InjectViewIntoRegion(RegionNames.PopUpRegion, view, true); viewModel.HostChat = new DelegateCommand(ExecuteHostChat, CanHostChat); viewModel.PropertyChanged += new System.ComponentModel.PropertyChangedEventHandler(ViewModelPropertyChanged); } void ViewModelPropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) { if (e.PropertyName == "Name" || e.PropertyName == "Port" || e.PropertyName == "Address") { (viewModel.HostChat as DelegateCommand).RaiseCanExecuteChanged(); (viewModel.HostChat as DelegateCommand).CanExecute(); } } public void ExecuteHostChat() { } public bool CanHostChat() { if (String.IsNullOrEmpty(viewModel.Address) || String.IsNullOrEmpty(viewModel.Port) || String.IsNullOrEmpty(viewModel.Name)) { return false; } else return true; } See how these two are together? Surely that can't be right. I mean... it WORKS for me... but something seems wrong about it. Shouldn't RaiseCanExecuteChanged call CanExecute? It doesn't... and so if I don't have that CanExecute in there, my control never toggles its IsEnabled like I need it to. (viewModel.HostChat as DelegateCommand).RaiseCanExecuteChanged(); (viewModel.HostChat as DelegateCommand).CanExecute();

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  • Binding one dependency property to another

    - by Gregory Dodd
    I have a custom Tab Control that I have created, but I am having an issue. I have an Editable TextBox as part of the custom TabControl View. <Controls:EditableTextControl x:Name="PageTypeName" Style="{StaticResource ResourceKey={x:Type Controls:EditableTextControl}}" Grid.Row="0" TabIndex="0" Uid="0" AutomationProperties.AutomationId="PageTypeNameTextBox" AutomationProperties.Name="PageTypeName" Visibility="{Binding ElementName=PageTabControl,Path=ShowPageType}"> <Controls:EditableTextControl.ContextMenu> <ContextMenu x:Name="TabContextMenu"> <MenuItem Header="Rename Page Type" Command="{Binding Path=PlacementTarget.EnterEditMode, RelativeSource={RelativeSource AncestorType=ContextMenu}}" AutomationProperties.AutomationId="RenamePageTypeMenuItem" AutomationProperties.Name="RenamePageType"/> <MenuItem Header="Delete Page Type" Command="{Binding Path=PageTypeDeletedCommand}" AutomationProperties.AutomationId="DeletePageTypeMenuItem" AutomationProperties.Name="DeletePageType"/> </ContextMenu> </Controls:EditableTextControl.ContextMenu> <Controls:EditableTextControl.Content> <!--<Binding Path="CurrentPageTypeViewModel.Name" Mode="TwoWay"/>--> <Binding ElementName="PageTabControl" Path="CurrentPageTypeName" Mode ="TwoWay"/> </Controls:EditableTextControl.Content> </Controls:EditableTextControl> In the Content section I am binding to a Dependency Prop called CurrentPageTypeName. This Depedency prop is part of this custom Tab Control. public static DependencyProperty CurrentPageTypeNameProperty = DependencyProperty.Register("CurrentPageTypeName", typeof(object), typeof(TabControlView)); public object CurrentPageTypeName { get { return GetValue(CurrentPageTypeNameProperty) as object; } set { SetValue(CurrentPageTypeNameProperty, value); } } In another view, where I am using the custom TabControl I then bind my property, with the actual name value, to CurrentPageTypeName property as seen below: <Views:TabControlView Grid.Row="0" Name="RunPageTabControl" TabItemsSource="{Binding RunPageTypeViewModels}" SelectedTab="{Binding Converter={StaticResource debugConverter}}" CurrentPageTypeName="{Binding Path=RunPageName, Mode=TwoWay}" TabContentTemplateSelector="{StaticResource tabItemTemplateSelector}" SelectedIndex="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type UserControl}}, Path=DataContext.SelectedTabIndex}" ShowPageType="Hidden" > <!--<Views:TabControlView.TabContentTemplate> <DataTemplate DataType="{x:Type ViewModels:RunPageTypeViewModel}"> <RunViews:RunPageTypeView/> </DataTemplate> </Views:TabControlView.TabContentTemplate>--> </Views:TabControlView> My problem is that nothing seems to be happening. It is grabbing its Content from the Itemsource, and not from my chained Dependency props. Is what I am trying even possible? If so, what have I done wrong. Thanks for looking.

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  • Steps to take for figuring out the delay when calling service and loading data with the result?

    - by VoodooChild
    Hello, In a client server app, where client front end is done in silverlight using C# and the services are the WCF services. If I am to hit the service and do a query and bring back a result and I notice that it is taking a relatively long time to load my page which is just loading the grid with the data, what things should I look at fix this issue or how would I fix this issue? What steps could I take to determine the problem? where is the bottle-neck, can anyone know from the little information provided here? Does this have anything to do with serialization? Any insight on what could be causing this delay? My service calls are made async. I hope this question makes sense :) Thanks

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  • Binding Enum[] to ListBox

    - by Polaris
    Hello. I have next enumeration Enum rcCategory { Incoming, Internal, Outgoing } and I have property "categories" in my class which has rcCategory[] type. I would like to bind this property to the listBox. I use next code for this MyListBox.SetBinding (ListBox.ItemsSource, new Binding {Source= myClass.categories}); But this code doesnt work as expected. How Can I do this. My listBox always is empty but source property has value

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  • Bind to several class properties

    - by Polaris
    Hello developers. I have some class with properties firstName and lastName. I want bind TextBlock to concatanation of this two properties. I know that I can create third property that will be return concatanation of these properties. But I dont want to use this approach. Is it possible to Bind TextBlock to two properties. and also I dont want create composite userControl.

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  • HOW TO RETURN VALUE FROM FUNCTION? (c#)

    - by Ole Jak
    So... I want to return value when C# function is called. I need a code example (simple summ of a,b values will be ok) Please help I need something like this ( I know ActionScript so I will write in it): public function sum(valueA:int, valueB:int):int { var summ:int = valueA + valueB; return summ; } How to translate it into C#?

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  • Append DataGrid inside of DataGrids RowDetailsTemplate

    - by 108980470541437452574
    this appears to bind, but rows in Details Grid are empty. Something is off/missing? I've also tried {Binding SubCustomers} SubCustomers is a List on parent object. I am able to bind this way to single Fields such as FirstName etc.. just not the subcollection.. <DataGrid.RowDetailsTemplate> <DataTemplate> <DataGrid AutoGenerateColumns="True" ItemsSource="{Binding Source=SubCustomers}" /> </DataTemplate> </DataGrid.RowDetailsTemplate>

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  • How do I link (dependency) properties in my ViewModel?

    - by mos
    Simplified example: I have an object that models a user. Users have a first name and a last name. The UserViewModel has a dependency property for my Models.User object. In the declaration of the UserView's xaml, I want to bind a couple of TextBlocks to the first and last name properties. What is the correct way to do this? Should I have readonly DependencyProperties for the name fields, and when the dependency property User is set, update them? Can the name fields be regular C# properties instead? Or, should I bind like this: <TextBlock Text="{Binding User.FirstName}" />

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