In my WPF application I have a grid with a fixed set of SVG Images (I use SharpVectors library)
<Image Grid.Column="0" Grid.Row="0" Source="{svgc:SvgImage Source=Resources/0.svg}" Stretch="Fill"/>
<Image Grid.Column="1" Grid.Row="0" Source="{svgc:SvgImage Source=/Resources/1.svg}" Stretch="Fill"/>
<Image Grid.Column="2" Grid.Row="0" Source="{svgc:SvgImage Source=Resources/2.svg}" Stretch="Fill"/>
<Image Grid.Column="1" Grid.Row="0" Source="{svgc:SvgImage Source=/Resources/3.svg}" Stretch="Fill"/>
Now I want to have item control where I would bind a list of paths to the SVGs, something like this:
<ItemsControl DataContext="{Binding DataContext}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<Image Stretch="Fill" Width="100" Height="100">
<Image.Source>
<renderers:SvgImageSource/> <!-- What should be used here as a path??? -->
</Image.Source>
</Image>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
But I don't get it how to use string path in the renderers:SvgImageSource tag.
Set an ItemsSource for your SVG image URIs. Then you can use the SvgImageConverter for binding.
<ItemsControl ItemsSource="{Binding YourSvgUriItems}">
<ItemsControl.Resources>
<svgc:SvgImageConverter x:Key="SvgImageConverter"/>
</ItemsControl.Resources>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Image Stretch="Fill" Width="100" Height="100"
Source="{Binding Converter={StaticResource SvgImageConverter}}"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
You could try to bind to the path and use the SvgImageConverterExtension class:
<Image Stretch="Fill" Width="100" Height="100">
<Image.Source>
<Binding Path="YourUriProperty">
<Binding.Converter>
<converters:SvgImageConverterExtension />
</Binding.Converter>
</Binding>
</Image.Source>
</Image>
Related
I have a long list coming from my Business logic which I need to display on the UI. As the list is long, I tried adding Scrollviewer but I am unable to scroll.
please find the XAML code below
<Grid Margin="0,32,0,0">
<TextBlock Text="{Binding IDC_WiFi, Source={StaticResource Resources}}" FontFamily="Segoe UI" FontSize="20" Foreground="#4cb5ab" HorizontalAlignment="Left" />
<Button Command="{Binding HardwareWifiAccordionCommand}" BorderThickness="0" Width="16" HorizontalAlignment="Right" Height="16" >
<Button.Background>
<ImageBrush ImageSource="{Binding AccordionImageHardwareWifi}" />
</Button.Background>
</Button>
</Grid>
<TextBlock Text="Klein's, Anil's" FontFamily="Segoe UI" FontSize="15" Foreground="#8fa3ad"/>
<StackPanel Height="200" Visibility="{Binding IsAccordionHardwareWifi, Converter={StaticResource Bool2Visible}}">
<ScrollViewer VerticalScrollBarVisibility="Auto">
<ItemsControl ItemsSource="{Binding WifiList,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" >
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,32,0,0">
<Grid>
<Image Source="/Images/Assets/da_wifi1_16x16.png" Height="16" Width="16" HorizontalAlignment="Left" />
<TextBlock Margin="25,0,0,0" Text="{Binding NetworkName}" FontSize="15" Foreground="#FFFFFF" />
<TextBlock Text="" FontSize="15" Foreground="#8fa3ad" HorizontalAlignment="Right" />
</Grid>
<TextBlock Text="" FontSize="15" Foreground="#8fa3ad" HorizontalAlignment="Left" />
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</StackPanel>
Put it into a ScrollViewer.
<ScrollViewer>
<StackPanel >
</StackPanel>
</ScrollViewer>
As #StepUp points out you can just wrap it with a ScrollViewer but I believe this breaks virtualization. That's outside the scope of this question of course but it's something to keep in mind. If performance is likely to become an issue then I'd suggest implementing this as shown in the answer to this question.
The scrollviewer needed a Height to be set
<Grid Margin="0,32,0,0">
<TextBlock Text="{Binding IDC_WiFi, Source={StaticResource Resources}}" FontFamily="Segoe UI" FontSize="20" Foreground="#4cb5ab" HorizontalAlignment="Left" />
<Button Command="{Binding HardwareWifiAccordionCommand}" BorderThickness="0" Width="16" HorizontalAlignment="Right" Height="16" >
<Button.Background>
<ImageBrush ImageSource="{Binding AccordionImageHardwareWifi}" />
</Button.Background>
</Button>
</Grid>
<TextBlock Text="Klein's, Anil's" FontFamily="Segoe UI" FontSize="15" Foreground="#8fa3ad"/>
<StackPanel Height="200" Visibility="{Binding IsAccordionHardwareWifi, Converter={StaticResource Bool2Visible}}">
<ScrollViewer VerticalScrollBarVisibility="Auto" Height="350">
<ItemsControl ItemsSource="{Binding WifiList,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" >
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,32,0,0">
<Grid>
<Image Source="/Images/Assets/da_wifi1_16x16.png" Height="16" Width="16" HorizontalAlignment="Left" />
<TextBlock Margin="25,0,0,0" Text="{Binding NetworkName}" FontSize="15" Foreground="#FFFFFF" />
<TextBlock Text="" FontSize="15" Foreground="#8fa3ad" HorizontalAlignment="Right" />
</Grid>
<TextBlock Text="" FontSize="15" Foreground="#8fa3ad" HorizontalAlignment="Left" />
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</StackPanel>
I'm using the following DataTemplate
<DataTemplate x:Key="platform_resources">
<StackPanel Orientation="Horizontal">
<Viewbox Width="30" Height="30" ToolTip="Network Domain Count" Stretch="Uniform">
<ContentControl DataContext="{Binding}" Focusable="False" Content="{DynamicResource appbar_server}" />
</Viewbox>
<TextBlock Margin="0,7,0,0" Text="{Binding Path=workload_count}"/>
<Separator Style="{StaticResource {x:Static ToolBar.SeparatorStyleKey}}" />
<Viewbox Width="30" Height="30" ToolTip="Logical Network Count" Stretch="Uniform">
<ContentControl Focusable="False" Content="{DynamicResource appbar_network_server_connecting}" />
</Viewbox>
<TextBlock Margin="0,7,0,0" Text="{Binding Path=vlan_count}"/>
<Separator Style="{StaticResource {x:Static ToolBar.SeparatorStyleKey}}" />
<Viewbox Width="30" Height="30" ToolTip="Network Domain Count" Stretch="Uniform">
<ContentControl Focusable="False" Content="{DynamicResource appbar_network}" />
</Viewbox>
<TextBlock Margin="0,7,0,0" Text="{Binding Path=networkdomain_count}"/>
</StackPanel>
</DataTemplate>
The template displays all the relevant data with separators but only shows the images on the last record. It's leaves spaces where the images are supposed to be, but no images.
Make sure you add x:Shared="False" property to your resources.
Example:
<Canvas x:Key="appbar_server" x:Shared="False">
<!-- ... -->
</Canvas>
This happens because you probably defined some Images (e.g appbar_server) in your resources and trying to display them in multiple items. But Image is a Visual and in WPF each Visual can only have one parent. So when your items are being generated, each item steals the Image from the previous one until the last item finally gets it.
Solution:
Unlike Image, BitmapImage is not a Visual and thus can be set multiple times as the source of different items. So instead of defining Images in your Resources, define BitmapImages:
<Window.Resources>
<BitmapImage x:Key="appbar_server" UriSource="C:\...\appbar_server.png"/>
....
And then instead of ContentControls create Image instances in your DataTemplate to present them:
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Viewbox Width="30" Height="30" ToolTip="Network Domain Count" Stretch="Uniform">
<Image Focusable="False" Source="{DynamicResource appbar_server}" />
</Viewbox>
<TextBlock Margin="0,7,0,0" Text="{Binding Path=workload_count}"/>
...
*Update:
The image is captured in a canvas which seems to be needing some
special wrapper to make this work.
In that case, you should define a DataTemplate for each Canvas like this:
<Window.Resources>
<DataTemplate x:Key="appbar_3d_3ds">
<Canvas Width="76" Height="76" Clip="F1 M 0,0L 76,0L 76,76L 0,76L 0,0">
<Path Width="32" Height="40" Canvas.Left="23" Canvas.Top="18" Stretch="Fill" Fill="Black" Data="F1 M 27,18L 23,26L 33,30L 24,38L 33,46L 23,50L 27,58L 45,58L 55,38L 45,18L 27,18 Z "/>
</Canvas>
</DataTemplate>
....
And then create ContentPresenter Instances in your ItemTemplate with their ContentTemplate set to your pre-defined data templates (e.g. appbar_3d_3ds).
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Viewbox Width="30" Height="30" ToolTip="Network Domain Count" Stretch="Uniform">
<ContentPresenter ContentTemplate="{DynamicResource appbar_3d_3ds}"/>
</Viewbox>
<TextBlock Margin="0,7,0,0" Text="{Binding Path=workload_count}"/>
....
I have this DataTemplate in style. I have two properties for Image's Source (Image and ImageHover). Now its Image. So I want to change it to ImageHover when the List item from the List Box is hovered by the mouse. How can I make this kind of Binding - Binding in trigger, to change another control's property ?
<DataTemplate x:Key="MetroListBoxItemTemplate">
<Grid Name="grid_menu">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="110"/>
</Grid.ColumnDefinitions>
<Image Name="menu_image" Source="{Binding Image}" Stretch="Uniform" Width="40" Height="40" >
</Image>
<StackPanel Grid.Column="1" Margin="5">
<TextBlock Text="{Binding Path=Title, FallbackValue=Title}" FontFamily="Segoe UI Light" FontSize="20"
Foreground="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem, Mode=FindAncestor}, Path=Foreground}" />
</StackPanel>
</Grid>
</DataTemplate>
I use the template here
<ListBox
x:Name="main_menu" HorizontalAlignment="Left" Margin="8,8,0,8" Width="160"
ItemTemplate="{DynamicResource MetroListBoxItemTemplate}"
ItemContainerStyle="{DynamicResource MetroListBoxItemStyle}"
ItemsSource="{Binding Menu}">
</ListBox>
I created user control with the textblock. But it will not wrap. This user control servers as a listboxitem.
<Grid x:Name="MainGrid" Height="Auto" Width="Auto">
<StackPanel Orientation="Horizontal">
<Image Height="50" Width="100" Stretch="Uniform" Name="image1" Source="{Binding Path=VideoImageUrl}" Margin="12,12,13,84" MouseLeftButtonDown="image1_MouseLeftButtonDown" MouseEnter="image1_MouseEnter" MouseLeave="image1_MouseLeave" />
<StackPanel Orientation="Vertical" >
<TextBlock TextWrapping="Wrap" Height="Auto" HorizontalAlignment="Left" Name="titleTextBox"
Text="{Binding Path=Title, Mode=TwoWay, ValidatesOnExceptions=true, NotifyOnValidationError=true}"
VerticalAlignment="Center" Width="Auto" FontSize="14" FontWeight="SemiBold" />
<StackPanel Orientation="Vertical" x:Name="StackPanelDetails">
<TextBlock Height="Auto" HorizontalAlignment="Left" Name="desciptionTextBox"
TextWrapping="Wrap"
Text="{Binding Path=Desciption, Mode=OneWay, ValidatesOnExceptions=true, NotifyOnValidationError=true}"
VerticalAlignment="Center" Width="Auto" />
<Line />
<ItemsControl x:Name="CustomItemsSource" ItemsSource="{Binding Path=LinksList}" >
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock>
<Hyperlink NavigateUri="{Binding Path=TopicUrl}" RequestNavigate="Hyperlink_RequestNavigate" >
<TextBlock Text="{Binding Path=TopicName}" />
</Hyperlink>
</TextBlock>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</StackPanel>
</StackPanel>
</Grid>
A ListBox's default template does not automatically limit the width of its items, but instead uses a ScrollViewer, which shows a horizontal scrollbar when an item is wider than the ListBox.
You can remove the ScrollViewer by replacing the ListBox's Template:
<ListBox ...>
<ListBox.Template>
<ControlTemplate>
<StackPanel IsItemsHost="True"/>
</ControlTemplate>
</ListBox.Template>
...
</ListBox>
Another important thing to note is that a StackPanel in the top-level Grid won't properly resize the contained elements. In the following simplified example the text in the TextBlock is not wrapped because the containing StackPanel simply does not resize it as you expect:
<Grid>
<StackPanel Orientation="Horizontal">
<Image ... />
<Text TextWrapping="Wrap" Text=... />
</StackPanel>
</Grid>
This way it works as you expect:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Image ... />
<TextBlock Grid.Column="1" TextWrapping="Wrap" Text=... />
</Grid>
I have a Toolbar whose ItemSource is a collection of toolbarItems which contain the bitmap text and other info for the button and the xaml includes a DataTemplate to bind the data to the button.
Our app now needs to become 508 compliant and when I run the Accessible Event Watcher it is listing all the toolbar button names as "Unknown".
Can someone tell me how to provide a meaningful name to the buttons?
Here's the portion of xaml applying to this issue:
<ToolBar.ItemTemplate>
<DataTemplate DataType="{x:Type src:toolBarItem}">
<DataTemplate.Resources>
<src:toolBarItemConverter x:Key="buttonConverter" />
<src:booleanToVisibilityConverter x:Key="boolToVisibilityConverter" />
<src:toolBarButtonFormatConverter x:Key="toolBarFormatDisplayConverter" />
<src:stringToVisibilityConverter x:Key="stringToVisibilityDisplayConverter" />
</DataTemplate.Resources>
<StackPanel Orientation="Horizontal">
<Border Style="{StaticResource SeparatorStyle}" Visibility="{Binding menuSeparator, Converter={StaticResource boolToVisibilityConverter}}"/>
<Button x:Name="listButton" Height="{Binding menuHeight, Mode=OneWay}" Width="{Binding menuWidth}" VerticalAlignment="Top" HorizontalAlignment="Center" Visibility="{Binding isActiveButton, Converter={StaticResource boolToVisibilityConverter}}" Tag="{Binding}"
ToolTip="{Binding menuTooltip}" IsEnabled="{Binding isEnabled}" >
<UniformGrid VerticalAlignment="Center" HorizontalAlignment="Center" Rows="{Binding menuText,Converter={StaticResource toolBarFormatDisplayConverter}}" >
<!-- button image -->
<Image Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Center" Source="{Binding menuImage, Converter={StaticResource buttonConverter}}"/>
<!-- button name -->
<Viewbox StretchDirection="DownOnly" HorizontalAlignment="Center" VerticalAlignment="Bottom" Visibility="{Binding menuText, Converter={StaticResource stringToVisibilityDisplayConverter}}" >
<TextBlock x:Name="buttonName" FontFamily="Segoe UI" Width="{Binding menuWidth}" FontSize="12" Grid.Row="1" TextAlignment="Center" TextWrapping="Wrap" HorizontalAlignment="Center" VerticalAlignment="Bottom" Text="{Binding menuText}" Foreground="Black" />
</Viewbox>
</UniformGrid>
<!-- </StackPanel> -->
</Button>
</StackPanel>
</DataTemplate>
</ToolBar.ItemTemplate>
Thanks,
Ron
OK we figured this out. Need to simply bind your names to the AutomationProperties.Name
<Button x:Name="listButton" AutomationProperties.Name="{Binding menuText}"
Height="{Binding menuHeight, Mode=OneWay}" Width="{Binding menuWidth}"
VerticalAlignment="Top" HorizontalAlignment="Center"
Visibility="{Binding isActiveButton,
Converter={StaticResource boolToVisibilityConverter}}"
Tag="{Binding}" ToolTip="{Binding menuTooltip}" IsEnabled="{Binding isEnabled}" >