My DashBoardSimpleCountObject has 2 values: MyName and MyValue.
I use an ObservableCollection<DashboardSimpleCountObject> called MyData.
I want to show a picture, as long as MyValue is null.
However, the picture ("loading") is only shown at the last item of my ObservableCollection (no matter, how many items are in there). As soon as a MyValue is set (with anything other than null), it is automatically updated and shown correctly - that works fine at all items.
<ItemsControl x:Name="_control" ItemsSource="{Binding MyData}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Grid Margin="25">
<Label FontSize="14" Content="{Binding MyName}" />
<Label Margin="0,25" HorizontalContentAlignment="Right" FontSize="29" FontWeight="ExtraBold" Foreground="{Binding MyColor}">
<Label.Style>
<Style TargetType="{x:Type Label}">
<Setter Property="Content" Value="{Binding MyValue}" />
<Style.Triggers>
<DataTrigger Binding="{Binding MyValue}" Value="{x:Null}">
<Setter Property="Content">
<Setter.Value>
<Image Width="32" Height="32" Source="{DynamicResource loading}" />
</Setter.Value>
</Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</Label.Style>
</Label>
</Grid>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
What am I doing wrong?
Thank you very much in advance! :)
It seems, the nature of DynamicResource causes this issue.
Simply changing DynamicResource to StaticResource did the trick.
So, the DataTrigger worked just fine from the beginning. The image simply did only show up once due to being loaded as a DynamicResource.
Related
I am trying to create a button Style that I can use for a "Lookup" button throughout my UWP app. However, the icon only appears on the first button on the screen. I tried this solution using templates, but it is not working for me. Thanks for the help.
Code:
<Page.Resources>
<ControlTemplate x:Key="FindSymbolTemplate">
<SymbolIcon Symbol="Find" Foreground="White" />
</ControlTemplate>
<Style TargetType="Button" x:Key="LookupButton">
<Setter Property="Content">
<Setter.Value>
<ContentControl Template="{StaticResource FindSymbolTemplate}" />
</Setter.Value>
</Setter>
</Style>
</Page.Resources>
....
<Button x:Name="tourNumLookup"
Style="{StaticResource LookupButton}"
Grid.Column="1"
Margin="10,0"
VerticalAlignment="Center" />
....
<Button x:Name="customerIdLookup"
Style="{StaticResource LookupButton}"
VerticalAlignment="Center"
Grid.Column="1"
Grid.Row="1"
Margin="10,0" />
The two buttons in the UI. Only the first has the SymbolIcon content.
#Romasz's solution absolutely works, but what if you want a lightly different Foreground on the SymbolIcon inside another Button?
Here's a potentially more flexible way that I normally go with.
First let's create a base Style that holds some default values for all the icons.
<Style x:Key="Style-Icon-Base"
TargetType="ContentControl">
<!-- If you don't specify the Foreground, it will use its ancestor's -->
<!--<Setter Property="Foreground"
Value="White" />-->
<Setter Property="HorizontalContentAlignment"
Value="Center" />
<Setter Property="VerticalContentAlignment"
Value="Center" />
<Setter Property="Width"
Value="20" />
<Setter Property="Height"
Value="20" />
<Setter Property="Padding"
Value="0" />
</Style>
Then we create a new icon Style which inherits from the one above. Note within the ControlTemplate I have used TemplateBinding to make property values dynamic. TemplateBinding isn't available inside a DataTemplate.
<Style x:Key="Style-Icon-Find"
BasedOn="{StaticResource Style-Icon-Base}"
TargetType="ContentControl">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ContentControl">
<!--
'cause you cannot change the size of the SymbolIcon, we insert a Viewbox here,
otherwise you don't need it.
-->
<Viewbox Margin="{TemplateBinding Padding}"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
<SymbolIcon Symbol="Find"
Foreground="{TemplateBinding Foreground}" />
</Viewbox>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
This way you have created a highly reusable icon Style, to use it, have a look at the following Buttons:
<StackPanel Orientation="Horizontal"
HorizontalAlignment="Center">
<Button Margin="4"
Padding="8"
BorderBrush="LightBlue">
<ContentControl Width="36"
Height="36"
Foreground="DarkCyan"
Style="{StaticResource Style-Icon-Find}" />
</Button>
<!-- Note how I defined the Foreground at the Button level and it flows down to the icon -->
<Button Foreground="DarkGoldenrod"
Margin="4">
<StackPanel Orientation="Horizontal">
<ContentControl Style="{StaticResource Style-Icon-Find}"
Width="16"
Height="16" />
<TextBlock Text="Search"
VerticalAlignment="Center"
Margin="8,0,0,0" />
</StackPanel>
</Button>
<Button Margin="4"
Padding="4">
<ContentControl Style="{StaticResource Style-Icon-Find}" />
</Button>
</StackPanel>
And they look like:
Generally UI elements can be used once (or saying different - have only one parent) - this is probably why it only works for the first button in your case. One solution may be to define DataTemplate and use it as ContentTemplate, so each button creates its own icon:
<Page.Resources>
<DataTemplate x:Key="FindTemplate">
<SymbolIcon Symbol="Find" Foreground="White" />
</DataTemplate>
</Page.Resources>
...
<Button x:Name="tourNumLookup" ContentTemplate="{StaticResource FindTemplate}"
Grid.Column="1" Margin="10,0" VerticalAlignment="Center" />
<Button x:Name="customerIdLookup" ContentTemplate="{StaticResource FindTemplate}"
VerticalAlignment="Center" Grid.Column="1" Grid.Row="1" Margin="10,0" />
You don't need to create ControlTemplate to reuse the icon. You can simply put this SymbolIcon to the resource dictionary and use as StaticResource for the buttons' Content.
<Page.Resources>
<SymbolIcon x:Key="FindSymbol" Symbol="Find" Foreground="White" />
</Page.Resources>
<Button x:Name="tourNumLookup"
Content="{StaticResource FindSymbol}"
Grid.Column="1"
Margin="10,0"
VerticalAlignment="Center" />
<Button x:Name="customerIdLookup"
Content="{StaticResource FindSymbol}"
VerticalAlignment="Center"
Grid.Column="1"
Grid.Row="1"
Margin="10,0" />
UPDATE
BTW this is possibly a bug in the UWP platform, because I tried the following code and only the first Button rendered the icon at desing time and none of the at runtime.
<Page.Resources>
<SymbolIcon x:Key="FindSymbol" Symbol="Find" Foreground="White" />
<Style TargetType="Button" x:Key="LookupButton">
<Setter Property="Content" Value="{StaticResource FindSymbol}"/>
</Style>
</Page.Resources>
<StackPanel>
<Button x:Name="tourNumLookup"
Style="{StaticResource LookupButton}"
Margin="10,0"
VerticalAlignment="Center" />
<Button x:Name="customerIdLookup"
Style="{StaticResource LookupButton}"
VerticalAlignment="Center"
Margin="10,0" />
</StackPanel>
I tried to assign the Setter's Value directly but I got the same result. And also tried with FontIcon.
I want to strech a ListBox with its ListBoxItem. Streching the ListBox itself isn't a problem. The problem seems to be, to tell the ListBoxItem to use the available space in the ListBox.
<Page.Content>
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" Height="200">
<ListBox VerticalContentAlignment="Stretch" VerticalAlignment="Stretch" Background="Green" ItemsSource="{x:Bind Path=ChessFieldList}" >
<ListBox.ItemTemplate>
<DataTemplate >
<StackPanel HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="Yellow" BorderBrush="Red" BorderThickness="3" >
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</Page.Content>
The image below shows the above and expected result.
How can I achieve the expected result?
[Edit] An other and in my opinion the correct solution: Set Width and Height of ItemsControl Children
This is a common problem. All you need to do is set the HorizontalContentAlignment of the ListBoxItems too:
<ListBox Background="Green" ItemsSource="{x:Bind ChessFieldList}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Background="Yellow" BorderBrush="Red" BorderThickness="3" Height="50">
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
</ListBox>
Since the StackPanel doesn't contain any content, it won't have any height, so I've just added Height="50" to it for the purpose of this demonstration.
Simply add
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
If you use grouping, you should include:
<ListView.GroupStyle>
<GroupStyle HidesIfEmpty="False">
<GroupStyle.HeaderContainerStyle>
<Style TargetType="ListViewHeaderItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Setter Property="VerticalContentAlignment" Value="Stretch" />
</Style>
</GroupStyle.HeaderContainerStyle>
</GroupStyle>
</ListView.GroupStyle>
It's a bit more than you asked for, but it's a little-known technique.
For the XAML below I'm using AvalonDock 2.0.2. I'm wanting to set the font of the Title property of the LayoutAnchorable
<xcad:DockingManager Name="TabItemDockingManager"
AllowMixedOrientation="True"
BorderBrush="Black"
BorderThickness="0" Height="Auto" Width="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"
AnchorablesSource="{Binding Anchorables, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" viewModels:AvalonDockLayoutSerializer.LoadLayoutCommand="{Binding ADLayout.LoadLayoutCommand}" viewModels:AvalonDockLayoutSerializer.SaveLayoutCommand="{Binding ADLayout.SaveLayoutCommand}">
<xcad:DockingManager.LayoutUpdateStrategy>
<pane:LayoutInitializer/>
</xcad:DockingManager.LayoutUpdateStrategy>
<xcad:DockingManager.LayoutItemTemplateSelector>
<pane:PanesTemplateSelector>
<pane:PanesTemplateSelector.MyViewTemplate>
<DataTemplate>
...
</DataTemplate>
</pane:PanesTemplateSelector.MyViewTemplate>
</pane:PanesTemplateSelector>
</xcad:DockingManager.LayoutItemTemplateSelector>
<xcad:DockingManager.LayoutItemContainerStyleSelector>
<pane:PanesStyleSelector>
<pane:PanesStyleSelector.ToolStyle>
<Style TargetType="{x:Type xcad:LayoutAnchorableItem}">
<Setter Property="Title" Value="{Binding Model.Title}"/>
<Setter Property="IconSource" Value="{Binding Model.IconSource}"/>
<Setter Property="Visibility" Value="{Binding Model.IsVisible, Mode=TwoWay, Converter={StaticResource BoolToVisibilityConverter}, ConverterParameter={x:Static Visibility.Hidden}}"/>
<Setter Property="ContentId" Value="{Binding Model.ContentId}"/>
<Setter Property="IsSelected" Value="{Binding Model.IsSelected, Mode=TwoWay}"/>
<Setter Property="IsActive" Value="{Binding Model.IsActive, Mode=TwoWay}"/>
</Style>
</pane:PanesStyleSelector.ToolStyle>
</pane:PanesStyleSelector>
</xcad:DockingManager.LayoutItemContainerStyleSelector>
<xcad:LayoutRoot x:Name="_LayoutRoot">
<xcad:LayoutPanel Orientation="Vertical">
<xcad:LayoutAnchorablePane Name="AnchorablesPane" DockHeight="150">
</xcad:LayoutAnchorablePane>
</xcad:LayoutPanel>
</xcad:LayoutRoot>
</xcad:DockingManager>
I can set the Title text (which is done via reading/loading the layout), however I don't see a Font/FontFamily property I can set
Does anyone know how this can be done ?
Thanks to Attila (apols that I cannot mark his answer as I don't have enough points)
AvalonDock 2.2 - Full width TitleTemplate (fill parent container)
AvalonDock is a fantastic library - that said implementing it with MVVM is a challenge but the below seems to work well
<xcad:DockingManager.Resources>
<DataTemplate x:Key="DockingWindowTitleDataTemplate" DataType="{x:Type xcad:LayoutContent}">
<Label>
<TextBlock Text="{Binding Path=Title}" Margin="5,0,0,0" VerticalAlignment="Center" FontSize="14" />
</Label>
</DataTemplate>
</xcad:DockingManager.Resources>
<xcad:DockingManager.AnchorableTitleTemplate>
<StaticResource ResourceKey="DockingWindowTitleDataTemplate" />
</xcad:DockingManager.AnchorableTitleTemplate>
I use a wrapgrid as the itemspaneltemplate in my app
<GridView x:Name="InfoGridView" Margin="50">
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<WrapGrid Orientation="Vertical" ItemWidth="200" ItemHeight="50" Height="400" HorizontalAlignment="Left" VerticalAlignment="Top"/>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<TextBlock Text="Name" Style="{StaticResource AppNameTextStyle}" />
<TextBox x:Name="NameTextBox" Width="180"/>
<Button x:Name="AnotherNameButton" Style="{StaticResource AddAppBarButtonStyle}"/>
</GridView>
The TextBlock, TextBox and the Button are display in the middle of the item, how to let them display keep left?
Set this up on the ItemContainerStyle within your GridView by adding the following XAML below your ItemsPanel entry.
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="HorizontalContentAlignment" Value="Left" />
</Style>
</GridView.ItemContainerStyle>
I am trying to implement a semantic zoom in C#/Xaml for Windows 8. I succeed in displaying the zoom out and the zoom in. But when i click on item in the zoom out view I always come back to the first item of my zoom-in view.
here is how I grouped my items :
public IEnumerable<object> ListByCategory()
{
var query = from item in listArticles.listArticles
orderby item.categorie
group item by item.categorie into g
select g;
return query;
}
I used this to display the same collection of grouped items to the zoom out and zoom in views :
this.cvs1.Source = App.api.ListByCategory();
(semanticZoom.ZoomedOutView as ListViewBase).ItemsSource =
this.cvs1.View.CollectionGroups;
and my xaml code is
<ScrollViewer
x:Name="itemGridScrollViewer"
AutomationProperties.AutomationId="ItemGridScrollViewer"
Grid.Row="1"
Margin="0,-3,0,0"
Style="{StaticResource HorizontalScrollViewerStyle}">
<SemanticZoom x:Name="semanticZoom" VerticalAlignment="Bottom">
<SemanticZoom.ZoomedOutView>
<GridView Foreground="Black" SelectionMode="None">
<GridView.ItemTemplate>
<DataTemplate>
<TextBlock
Text="{Binding Group.Key}"
FontFamily="Segoe UI Light"
FontSize="24" />
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<WrapGrid ItemWidth="200" ItemHeight="200" MaximumRowsOrColumns="2"
VerticalChildrenAlignment="Center" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Margin" Value="4" />
<Setter Property="Padding" Value="10" />
<Setter Property="Background" Value="#FF25A1DB" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="HorizontalContentAlignment" Value="Left" />
<Setter Property="VerticalContentAlignment" Value="Bottom" />
</Style>
</GridView.ItemContainerStyle>
</GridView>
</SemanticZoom.ZoomedOutView>
<SemanticZoom.ZoomedInView>
<local:MyGridView x:Name="PicturesGridView" SelectionMode="None"
ItemsSource="{Binding Source={StaticResource cvs1}}" IsItemClickEnabled="True" ItemTemplate="{StaticResource CustomTileItem}" ItemClick="ItemView_ItemClick" IsSwipeEnabled="True">
<local:MyGridView.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</local:MyGridView.ItemsPanel>
<local:MyGridView.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Button Click="Button_Click_1" Content="{Binding Key}" Foreground="Black" Background="White" FontSize="30" Margin="0,0,0,-10" ></Button>
</DataTemplate>
</GroupStyle.HeaderTemplate>
<GroupStyle.Panel>
<ItemsPanelTemplate>
<VariableSizedWrapGrid ItemWidth="75" ItemHeight="150" Orientation="Vertical" Margin="0,0,80,0" MaximumRowsOrColumns="3"/>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</local:MyGridView.GroupStyle>
</local:MyGridView>
</SemanticZoom.ZoomedInView>
</SemanticZoom>
</ScrollViewer>
Thank you for your help.
I found the solution in the link that Depechie posted.
Replacing the ScrollViewer with SemanticZoom
The first and most important thing to do is to completely remove the ScrollViewer named “itemGridScrollViewer” from the Movies.xaml. The SemanticZoom control won’t work correctly if it’s inside the ScrollViewer.
Many people have problems getting the ZoomedOutView and ZoomedInView “in sync”. The usual problem is that when the item in ZoomedOutView is clicked, the ZoomedInView doesn’t scroll to the correct position. The reason for this problem usually is that the SemanticZoom –control is inside a ScrollViewer.
So effectively, I just remove the scrollViewer and it works like a charm :
<SemanticZoom x:Name="semanticZoom" VerticalAlignment="Bottom"
Grid.Row="1"
Margin="0,-3,0,0">
<SemanticZoom.ZoomedOutView>
<GridView Foreground="Black" SelectionMode="None">
<GridView.ItemTemplate>
<DataTemplate>
<TextBlock
Text="{Binding Group.Key}"
FontFamily="Segoe UI Light"
FontSize="24" />
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<WrapGrid ItemWidth="200" ItemHeight="200" MaximumRowsOrColumns="2"
VerticalChildrenAlignment="Center" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.ItemContainerStyle>
<Style TargetType="GridViewItem">
<Setter Property="Margin" Value="4" />
<Setter Property="Padding" Value="10" />
<Setter Property="Background" Value="#FF25A1DB" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="HorizontalContentAlignment" Value="Left" />
<Setter Property="VerticalContentAlignment" Value="Bottom" />
</Style>
</GridView.ItemContainerStyle>
</GridView>
</SemanticZoom.ZoomedOutView>
<SemanticZoom.ZoomedInView>
<local:MyGridView x:Name="PicturesGridView" SelectionMode="None"
ItemsSource="{Binding Source={StaticResource cvs1}}" IsItemClickEnabled="True" ItemTemplate="{StaticResource CustomTileItem}" ItemClick="ItemView_ItemClick" IsSwipeEnabled="True">
<local:MyGridView.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal"/>
</ItemsPanelTemplate>
</local:MyGridView.ItemsPanel>
<local:MyGridView.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Button Click="Button_Click_1" Content="{Binding Key}" Foreground="Black" Background="White" FontSize="30" Margin="0,0,0,-10" ></Button>
</DataTemplate>
</GroupStyle.HeaderTemplate>
<GroupStyle.Panel>
<ItemsPanelTemplate>
<VariableSizedWrapGrid ItemWidth="75" ItemHeight="150" Orientation="Vertical" Margin="0,0,80,0" MaximumRowsOrColumns="3"/>
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</local:MyGridView.GroupStyle>
</local:MyGridView>
</SemanticZoom.ZoomedInView>
</SemanticZoom>
Bit difficult to see why it isn't working, so my option for you is to try working 'back' from a working solution: take a look at http://mikaelkoskinen.net/winrt-step-by-step-tutorial-mvvm-gridview-semanticzoom/ for a very good detailed example!
I think grouping may be the key here. Make sure your CollectionViewSource has IsSourceGrouped="True".
Also, you don't need to set
ItemsSource = this.cvs1.View.CollectionGroups;
It can be set
ItemsSource = this.cvs1;