I have a class PC that contains Image, Label (with XAML design) and I want to get a list of PCs in ListBox in other class.
I tried this, but I get error System.Windows.Markup.XamlParseException:
pc p = new pc();
list_pc.Items.Add(p);
(where list_pc is a ListBox)
This is the XAML for a single PC:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"
x:Class="TnCyberCafe.pc"
Title="pc"
SizeToContent="WidthAndHeight"
ShowInTaskbar="False"
WindowStartupLocation="CenterScreen"
WindowStyle="None"
AllowsTransparency="True"
Background="Transparent" Width="95" Height="104.982">
<Grid HorizontalAlignment="Left" Margin="0,10,-15,10" Width="110">
<Image x:Name="image" HorizontalAlignment="Left" Height="96" VerticalAlignment="Top" Width="100" Source="Resources/aaa.png" RenderTransformOrigin="0.5,0.26" Margin="0,-16,0,0"/>
<Label Content="Label" HorizontalAlignment="Left" Height="25" Margin="20,70,0,-10" VerticalAlignment="Top" Width="45"/>
</Grid>
</Window>
This is the XAML for my list_pc:
<ListBox x:Name="liste_pc" ScrollViewer.VerticalScrollBarVisibility="Disabled">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel IsItemsHost="True" Orientation="Horizontal"/>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
List PCs
</ListBox>
Your first question regarding the System.Windows.Markup.XamlParseException:
As Garry Vass mentioned something went wrong, but does not tell you exactly what happened. If you are developing in Visual Studio, Click on Exceptions under Debug Tab and enable Common Language Runtime Exceptions. This will point you to the Error Code.
For the second question you should have databindings and ListBox Itemtemplate as below
<ListBox x:Name="liste_pc" ItemsSource="{Binding PCList}" ScrollViewer.VerticalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Image Source="{Binding PCImageSource}" />
<Label Content="{Binding Path=PCName}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
where PCList is the observable collection of PC Class object items
Related
I'm fairly new to WPF and am working with some legacy code, not sure how to use the HeaderedContentControl Header. I'd like to put in a StackPanel and customize the look of a header, just not sure how to do that.
Could someone give me some guidance on what to do next?
I have this xaml and the HeaderTemplate is never used.
<UserControl x:Class="PEC.Admin.WindowsControls.Program.Views.ProgramProductEnrichmentColorsView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:commonControls="clr-namespace:ManagerConsole.Common.Controls;assembly=ManagerConsole.Common.Controls"
xmlns:program="clr-namespace:PEC.Admin.ViewModel.Program;assembly=PEC.Admin.ViewModel.Program"
mc:Ignorable="d"
d:DesignWidth="300"
d:DataContext="{d:DesignInstance program:ProgramProductEnrichmentColorsViewModel}">
<commonControls:ExpanderPanel IsExpanded="{Binding Path=IsExpanded,Mode=TwoWay}">
<HeaderedContentControl.HeaderTemplate> <!-- this never gets used... -->
<DataTemplate>
<StackPanel>
<Label Content="{Binding Path=Header}"></Label>
</StackPanel>
</DataTemplate>
</HeaderedContentControl.HeaderTemplate>
<StackPanel HorizontalAlignment="Stretch"
VerticalAlignment="Top"
Width="Auto"
Margin="3"
Background="White">
<TextBlock Text="Source Type:"
Margin="0,5,0,0" />
<TextBox IsReadOnly="True"
IsTabStop="False"
Background="LightGray"
BorderThickness="0"
Text="{Binding Path=SourceTypeName, Mode=OneTime}" />
</StackPanel>
</commonControls:ExpanderPanel>
</UserControl>
HeaderTemplate is applied. To verify it - set a background to the Label in HeaderTemplate.
HeaderTemplate doesn't display anything though, because binding is incorrect. Template is applied to the data set in Header property, which currently has null value.
So change code as in the example below (I tried with Expander, hopefully it will work for custom commonControls:ExpanderPanel):
<Expander IsExpanded="{Binding Path=IsExpanded, Mode=TwoWay}"
Header="{Binding ComplexObject}">
<HeaderedContentControl.HeaderTemplate>
<DataTemplate>
<StackPanel>
<Label Background="Green" Content="{Binding PropertyOfTheObject}"/>
</StackPanel>
</DataTemplate>
</HeaderedContentControl.HeaderTemplate>
</Expander>
Header is a dependency property and can be set via Binding. Header becomes a source for bindings in a HeaderTemplate. Or it can be some constant (Header="Click to expand"), resource (Header="{StaticResource ExpandTitle}") or complex content, e.g.:
<Expander.Header>
<TextBlock Text="Click to expand"/>
</Expander.Header>
Using a WPF ListBox and a WrapPanel, is there a way to use a ViewBox with the internal content scaling, but without having any content trimming or scroll bars? I want to scale all internal items down. The width / heigth of the container can scale, and the number of items is dynamic.
I put together a simple WPF example (without any solutions). Open to sugguestions.
Code Example:
<Window x:Class="WpfListBoxWrapPanel.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Title="MainWindow"
Height="230.572"
Width="426.972">
<Grid>
<ListBox ItemsSource="{Binding SomeCollection, FallbackValue=123456123456123456123456123456123456}"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
ScrollViewer.VerticalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Width="50"
Height="50"
Margin="3">
<Rectangle Fill="LightCoral"></Rectangle>
<TextBlock Text="{Binding}"
Margin="4"></TextBlock>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
</ListBox>
</Grid>
Thanks!
Is there any XAML element that will automatically wrap to a new line for sub elements that don't have enough room on a line?
What I mean is that on a wide screen I'll get:
Box1 Box2 Box3
And on a narrow one:
Box1 Box2
Box3
Without having to listen to events and fix it by code.
The comments mention VariableSizedWrapGrid as a solution. But I can't figure out how to make it wrap.
You can use a simple GridView to do it. If you don't set a Height, it should work like a charm.
<GridView Name="xConcerts" ItemsSource="{x:Bind Artist.UpcomingEvents, Mode=OneWay}">
<GridView.ItemTemplate>
<DataTemplate x:DataType="songkick:EventExt">
<Border CornerRadius="8" Background="{ThemeResource ThemeGrayHighColorBrush}" Opacity="0.8">
<StackPanel Margin="18,2">
<TextBlock Text="{x:Bind FullDisplayDate, Converter={StaticResource FormatStringToDateDayConverter}}" Style="{ThemeResource ThemeDateBoldStyle}"/>
<TextBlock Text="{x:Bind FullDisplayDate, Converter={StaticResource FormatStringToDateMonthConverter}}" Style="{ThemeResource ThemeDateBoldStyle}" Margin="0,-4,0,0"/>
</StackPanel>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemContainerTransitions>
<TransitionCollection>
<RepositionThemeTransition/>
</TransitionCollection>
</GridView.ItemContainerTransitions>
</GridView>
According to your requirement, using the WrapPanel control in WinRTXamlToolkit will meet your needs.
Sample code here:
<Page x:Class="TestDemo.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Tool="using:WinRTXamlToolkit.Controls"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:local="using:TestDemo"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Tool:WrapPanel>
<Button Width="200" Margin="10">1</Button>
<Button Width="200" Margin="10">2</Button>
<Button Width="200" Margin="10">3</Button>
</Tool:WrapPanel>
</Page>
And the output here:
I am new to WPF and as a learning project I opted for a Windows Explorer like File Manager. In this project I want to display the the List view as a icon list that follows flow layout pattern. I tried the solutions given here: WPF: ListView with icons view?. But they are making my icons overlap each other. My icons are basically user controls that are loaded dynamically. This is my code for user control that represents a list view icon:
<UserControl x:Class="MVCP.FileItem"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d" Height="156.767" Width="161.279">
<Grid HorizontalAlignment="Center">
<Image HorizontalAlignment="Center" Height="100" Margin="10,10,10,0" VerticalAlignment="Top" Width="141" Source="fileflat.png"/>
<TextBlock HorizontalAlignment="Center" Margin="10,120,10,5" TextWrapping="Wrap" Text="<Filename>" VerticalAlignment="Center" Height="32" Width="141" FontSize="18" Foreground="White" TextAlignment="Center"/>
</Grid>
</UserControl>
And this is my ListView code:
<ListView x:Name="files" Background="#FF19174B" AllowDrop="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" PreviewMouseLeftButtonDown="files_PreviewMouseLeftButtonDown" MouseMove="files_MouseMove">
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
</ListView>
How can I arrange these user controls so that they can look like Windows Explorer icons?
#AbinMathew gave me a hint for using Panels. So, I changed my code like this and it worked. :)
<ListView x:Name="files" Background="#FF19174B" AllowDrop="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" PreviewMouseLeftButtonDown="files_PreviewMouseLeftButtonDown" MouseMove="files_MouseMove">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<DockPanel>
<local:FileItem/>
</DockPanel>
</DataTemplate>
</ListView.ItemTemplate>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
</ListView>
Try adding any panel inside your ListView
<ListView x:Name="files" Background="#FF19174B" AllowDrop="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled" PreviewMouseLeftButtonDown="files_PreviewMouseLeftButtonDown" MouseMove="files_MouseMove">
<StackPanel>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
<local:FileItem/>
</StackPanel>
</ListView>
VS2012 detects an error with my definition of the namespace "cal:", this is my XAML:
<Window x:Class="TOP.MainWindowView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:cal="http://www.caliburnproject.org"
Title="MainWindow" Width="1024" Height="768">
<Grid>
<ContentControl x:Name="ActiveItem" Background="#FFCB8282" Margin="0,10,0,205"/>
<ItemsControl x:Name="Items" Margin="0,337,0,0" >
<ItemsControl.ItemTemplate>
<DataTemplate >
<Button Content="{Binding DisplayName}"
cal:Message.Attach="[Action ActivateItem($this)" Height="100" Width="100" Margin="20,0,0,0"/>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center"/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
</Grid>
</Window>
I also tried with xmlns:cal="clr-namespace:Caliburn.Micro;assembly=Caliburn.Micro" but the result is the same.
If I execute the application, the Action works well, but the detection of the error disturbs specially with the design preview...
Anybody knows how to fix this error?
Thanks in advance!
I had similar problem. Point your namespace to Caliburn.Micro.Platform
...
xmlns:cal="clr-namespace:Caliburn.Micro;assembly=Caliburn.Micro.Platform"
...>
I once got the same kind of error.
If you have added Caliburn.Micro as a project to your solution, then please remove the project reference from your main Project and readd the reference to Calibrun.Micro