I have a ListView in my UWP application with this code.
<ListView Name="menuListView" HorizontalAlignment="Center"
Grid.Row="1" SelectionChanged="ListView_SelectionChanged"
BorderThickness="0,0,0,5" SelectedIndex="0"
Grid.ColumnSpan="2">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel Orientation="Horizontal"></StackPanel>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<TextBlock Name="dayTB" Text="Day" Margin="25 0 0 0" FontSize="18" />
<TextBlock Name="weekTB" Text="Week" Margin="25 0 0 0" FontSize="18" />
<TextBlock Name="monthTB" Text="Month" Margin="25 0 0 0" FontSize="18" />
</ListView>
It looks like this.
I am trying to make it look like this for quite some time now, but my tries are not successful.
Is there a way to achieve this?
Any help would be appreciated.
The right control used in the picture, is the Pivot, not ListView.
try this basic Pivot XAML code, and play around it
<Pivot Title="EMAIL">
<PivotItem Header="All">
<TextBlock Text="all emails go here." />
</PivotItem>
<PivotItem Header="Unread">
<TextBlock Text="unread emails go here." />
</PivotItem>
<PivotItem Header="Flagged">
<TextBlock Text="flagged emails go here." />
</PivotItem>
<PivotItem Header="Urgent">
<TextBlock Text="urgent emails go here." />
</PivotItem>
</Pivot>
Related
after a quite bit of googling I haven't found answer on this problem.
I have this ListView
<ListView x:Name="itemListView" ItemsSource="{Binding History}" HorizontalAlignment="Stretch">
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"></Setter>
</Style>
</ListView.ItemContainerStyle>
<ListView.ItemTemplate>
<DataTemplate>
<Border Style="{StaticResource Border}" Background="{ThemeResource GradientLinear}" HorizontalAlignment="Stretch">
<Grid>
<StackPanel Orientation="Vertical" Margin="10,10,10,10" HorizontalAlignment="Left" Grid.Row="0" Grid.Column="0">
<TextBlock Text="{Binding name}" />
<TextBlock Text="{Binding question}" TextWrapping="Wrap"/>
<TextBlock Text="{Binding vrijeme}"/>
</StackPanel>
<Button Width="50" Height="50" Opacity="0.6" Grid.Row="0" Grid.Column="1" Tag="{Binding name}"
Command="{Binding ElementName=itemListView, Path=DataContext.Delete}" CommandParameter="{Binding ElementName=itemListView, Path=SelectedIndex}"
HorizontalAlignment="Right">
<SymbolIcon
HorizontalAlignment="Center"
Width="48"
Height="48"
Symbol="Delete" />
</Button>
</Grid>
</Border>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Problem is probably in this part of the code
<Button Width="50" Height="50" Opacity="0.6" Grid.Row="0" Grid.Column="1" Tag="{Binding name}"
Command="{Binding ElementName=itemListView, Path=DataContext.Delete}" CommandParameter="{Binding ElementName=itemListView, Path=SelectedIndex}"
HorizontalAlignment="Right">
When I click Button, ListViewItem that contains that Button is not selected so I get -1 for SelectedIndex or just null if I target SelectedItem. It seems that clicking that button leaves containing ListViewItem unaffected. If I first click ListViewItem and than click button it works, SelectedItem is set in ListView of course, but I can't count user will understand that. My question is - is there any way to "force" Button to send me in CommandArgument SelectedItem or SelectedIndex. I know how to do that through code-behind but I am interested in solving this problem through MVVM.
Thanx in advance.
I've got the problem, that I create an App, that will run on Windows Phone 8.1 and Windows 10 Mobile. This App is a non-UWP Windows Store App.
The problem I have is, that I have a list of a custom control that one has another List, that is not expanded (=collapsed). That looks like this:
The red rectangles are the ContentPresenter items of the first ItemControl and the green rectangles are the ContentPresenter items of the ItemControl in the first lists items, that is not visible on startup. It will be visible after the click on the expand-button. Both ItemControls have a DataTemplate configured to present what you see in the screenshot. (XAML code below)
The main problem I have is, that if I change the Pivot to the Pivot you see at the screenshot above, there is a freeze of the app for several seconds. It depends on the device how long this freeze is. In the W10M-Emulator on my PC I don't recognize a freeze but on a Lumia 620 with WP8.1 I have a freeze of 8.5 seconds.
In the profiler of Visual Studio it looks like this (I selected the range that is the problem I am talking about):
What I am wondering about is the large orange line with "Layout". If I expand it to the "big players", there is 60-70ms for each not visible item in the profiler.
I am asking myself why this is the case, even if the items are not visible and are in the VirtualizingStackPanel. The Number of Items of the ItemSourcein this example is 3 for the first ItemControl (red boxes) and 17, 59 and 1 for the second ItemControls that are only visible of the first item is expanded.
What I am also wondering about is, that regarding the timeline, all of the Items are processed at the same time because their baseline is for all items the same. But if I scroll down the profiler timeline details, I see another Event called "Parsing" for each item. That one is not processed in parallel for each item but serial. And the parsing of the last item fits to the end of the layout-event. This parsing events look like this:
What is the reason why the parsing takes so long time? I don't think that the controls are very complex etc. and there are no code behind procedures except some string formattings.
Finally here is the XAML code:
My PivotItem on the "MainPage" of the App:
<PivotItem
Header="Echtzeit"
Margin="10,-20,10,0"
>
<Grid>
<ScrollViewer
VerticalScrollBarVisibility="Visible"
>
<ItemsControl
ItemsSource="{Binding RealtimeDepartures, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
HorizontalAlignment="Stretch"
Margin="0"
>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<controls:RealtimeStation
StationName="{Binding StationName, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
Departures="{Binding DepartureList, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
FontSize="{Binding DataContext.ClientFontSize, ElementName=MainPg, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
/>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</ScrollViewer>
</Grid>
</PivotItem>
The RealtimeStation Control XAML:
<UserControl
...
>
<UserControl.Resources>
<dec:BoolToVisibilityConverter x:Key="BoolToVisibilityConv"/>
</UserControl.Resources>
<Grid>
<AppBarButton
HorizontalAlignment="Left"
VerticalAlignment="Top"
Grid.Column="0"
Name="btnExpand"
Icon="{Binding ExpandButtonIcon, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
Click="btnExpand_Click"
IsEnabled="{Binding IsExpandButtonEnabled, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
IsCompact="True"
Margin="0,-8,-2,-4"
/>
<StackPanel
Orientation="Vertical"
Margin="48,12,0,0"
>
<TextBlock
Text="{Binding StationName, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
VerticalAlignment="Center"
FontSize="24"
/>
<TextBlock
Text="Derzeit stehen keine Abfahrten an"
FontStyle="Italic"
Visibility="{Binding ShowNoDepartures, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
FontSize="{Binding FontSize, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
/>
<TextBlock
Text="Zugausfälle vorhanden!"
Foreground="Red"
FontWeight="Bold"
Visibility="{Binding ShowTrainCanceled, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
FontSize="{Binding FontSize, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
/>
<ItemsControl
ItemsSource="{Binding DepartureList, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
ScrollViewer.VerticalScrollBarVisibility="Visible"
ScrollViewer.HorizontalScrollBarVisibility="Disabled"
Margin="-48,0,0,0"
Visibility="{Binding IsExpanded, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay, Converter={StaticResource BoolToVisibilityConv}}"
>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<ContentPresenter>
<controls:RealtimeDeparture
DepartureDetails="{Binding}"
FontSize="{Binding FontSize, ElementName=main, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
/>
</ContentPresenter>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</Grid>
</UserControl>
And finally the RealtimeDeparture Control:
<UserControl
...
>
<Grid>
<control:DisruptionIcon
Height="24"
Width="50"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Icon="{Binding TrainIcon, UpdateSourceTrigger=PropertyChanged, Mode=OneWay}"
Margin="3"
/>
<StackPanel
Orientation="Vertical"
Margin="56,9,0,0"
>
<StackPanel
Orientation="Horizontal"
Margin="3,0"
VerticalAlignment="Center"
>
<TextBlock
Text="{Binding DelayTimeText, ElementName=main, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"
Foreground="{Binding DelayColor, ElementName=main, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"
/>
<TextBlock
Text="{Binding DepartureDetailsText, ElementName=main, Mode=OneWay, UpdateSourceTrigger=PropertyChanged}"
Margin="3,0"
/>
</StackPanel>
<TextBlock
Text="{Binding InformationText, UpdateSourceTrigger=PropertyChanged, Mode=OneWay, ElementName=main}"
Visibility="{Binding IsInformationVisible, UpdateSourceTrigger=PropertyChanged, Mode=OneWay, ElementName=main}"
Margin="3"
FontStyle="Italic"
TextWrapping="Wrap"
/>
<TextBlock
Text="Zug fällt aus!"
Foreground="Red"
FontWeight="Bold"
Visibility="{Binding IsCanceledVisible, UpdateSourceTrigger=PropertyChanged, Mode=OneWay, ElementName=main}"
Margin="3"
/>
</StackPanel>
</Grid>
</UserControl>
Does anybody has an idea how to speed up this parsing? What is the reason why it is so slow? Do I have a design issue that is disabling the virtualization-functionality of the VirtualizedStackPanel? I already tried a lot but didn't find the reason why it is so slow.
I don't think virtualization is turned on.
Try setting the CanContentScroll property to true on your ScrollViewer:
<ScrollViewer
CanContentScroll="true"
VerticalScrollBarVisibility="Visible"
>
The other option can be using e.g. ListBox which supports virtualization on its own (as far as I know it is enough to set the ItemsPanelTemplate to VirtualizingStackPanel)
I am working on a phone project which requires a pivot page.
I need to change the foreground and fontsize of PivotItem Headers. nothing changes when I tried to code them in xaml
<phone:PivotItem Header="item1" Foreground="black" fontsize="25" >
do I have to use style for them?
You need to change the HeaderTemplate
For example like this:
<controls:Pivot.HeaderTemplate>
<DataTemplate>
<StackPanel Margin="0">
<TextBlock FontSize="25" Margin="0" Text="{Binding}"/>
</StackPanel>
</DataTemplate>
</controls:Pivot.HeaderTemplate>
<controls:PivotItem Header="item1">
</controls:PivotItem>
you can try like this ..
in this i have shown how to make a header of one item you can do this for rest of the others
<phone:Pivot Title="MY APPLICATION">
<!--Pivot item one-->
<phone:PivotItem >
<phone:PivotItem.Header>
<StackPanel Background="#132d63" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<TextBlock Text="hhaha" FontSize="35" Foreground="White" Padding="10,10,10,10" />
</StackPanel>
</phone:PivotItem.Header>
</phone:PivotItem>
</phone:Pivot>
I have a WPF application using MVVM.
This code is from my ResourceDictionary.xaml
<DataTemplate x:Key="LogListTemplate">
<ListBox ItemsSource="{Binding LogList, UpdateSourceTrigger=PropertyChanged}" Style="{StaticResource HorizontalListBoxItem}">
<ListBox.ItemTemplate>
<DataTemplate>
<Border Style="{StaticResource ErrorBorders}">
<StackPanel ToolTip="{Binding Details}" Width="250">
<TextBlock Text="{Binding Title}" />
<TextBlock Text="{Binding Details}" TextWrapping="Wrap" />
<Button Command="{Binding AddToTempDtdFileCommand}" CommandParameter="{Binding Details}" Content="Ignore" />
</StackPanel>
</Border>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DataTemplate>
When I click on Button, the command does not execute. Testing confirms this is because my Button lives within a ListBox.
My problem is I can't move my button out of the ListBox for 2 reasons.
1. Asthetics/UI (the button has belong with the information)
2. Binding to the LogList is done from within the ListBox.ItemTemplate
Does any one have any suggestions?
If the command is defined in the ViewModel you can reach it by using RelativeSource. RelativeSource can find an ancestor (which is your View) so you can use its DataContext (your ViewModel).
<Button Command="{Binding DataContext.AddToTempDtdFileCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type YourViewClass}}}" CommandParameter="{Binding Details}" Content="Ignore" />
I just implemented a GridView with groups feature. I have a list of TVshows's episodes which are grouped by diffusion date.
When I have more than 3 episodes by date, I want to have my items wrapped and go next to the group title, at this time, the next items are going outside of the screen, and it not what I wanted.
As you can see, there is other episodes under the dupplicated one for each day, I want them to go next to the others, not under.
Here is my XAML code, thanks :)
<GridView Margin="70,0,0,40" ItemsSource="{Binding Source={StaticResource cvsActivities}}">
<GridView.Template>
<ControlTemplate>
<ItemsPresenter />
</ControlTemplate>
</GridView.Template>
<GridView.ItemContainerTransitions>
<TransitionCollection>
<EntranceThemeTransition IsStaggeringEnabled="True" />
<RepositionThemeTransition />
<AddDeleteThemeTransition />
</TransitionCollection>
</GridView.ItemContainerTransitions>
<GridView.ItemTemplate>
<DataTemplate>
<Grid>
<StackPanel Orientation="Vertical">
<Grid Name="grid_image">
<Image Width="280" Height="200" VerticalAlignment="Center" Stretch="UniformToFill" Source="Assets/no_image.png" />
<Image Width="280" Height="200" VerticalAlignment="Center" Stretch="UniformToFill" Source="{Binding saison.serie.poster}" />
</Grid>
<Image Source="Assets/Ban-1hh.png" Width="280" Height="59" Margin="0,-19,0,0"/>
<Grid Margin="0,-40,0,0" Height="40">
<StackPanel HorizontalAlignment="Left" Orientation="Vertical" VerticalAlignment="Center" Margin="0,-7,0,0">
<TextBlock HorizontalAlignment="Left" Margin="5,0,0,0" Width="190" TextTrimming="WordEllipsis" Foreground="White" FontSize="20" Text="{Binding saison.serie.nom}" />
<TextBlock HorizontalAlignment="Left" Margin="5,-5,0,0" Width="190" TextTrimming="WordEllipsis" Foreground="White" FontSize="13" Text="{Binding date}" />
</StackPanel>
<StackPanel VerticalAlignment="Center" HorizontalAlignment="Right" Orientation="Vertical" Margin="0,-5,5,0">
<StackPanel Orientation="Horizontal" FlowDirection="RightToLeft">
<TextBlock Foreground="#f0ec45" FontSize="14" Text="{Binding saison.number}" />
<TextBlock Foreground="#f0ec45" FontSize="14" Margin="5,0,0,0" Text="Saison " />
</StackPanel>
<StackPanel Orientation="Horizontal" FlowDirection="RightToLeft" Margin="0,-5,0,0">
<TextBlock Foreground="#f0ec45" FontSize="14" Text="{Binding ep_number}" />
<TextBlock Foreground="#f0ec45" FontSize="14" Margin="5,0,0,0" Text="Episode " />
</StackPanel>
</StackPanel>
</Grid>
</StackPanel>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.GroupStyle>
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Grid Background="LightGray" >
<TextBlock Text="{Binding Key, Converter={StaticResource StringFormatConverter}, ConverterParameter='{}{0:dddd dd MMM yy}'}" Foreground="Black" Margin="10"
Style="{StaticResource PageSubheaderTextStyle}" />
</Grid>
</DataTemplate>
</GroupStyle.HeaderTemplate>
</GroupStyle>
</GridView.GroupStyle>
</GridView>
Add a ItemsPanelTemplate (if you take a look at the default GridApp and the GroupedItemsPage.xaml, you'll see this is how they do it).
<GroupStyle.Panel>
<ItemsPanelTemplate>
<VariableSizedWrapGrid Orientation="Vertical" Margin="0,0,80,0" />
</ItemsPanelTemplate>
</GroupStyle.Panel>
If you want the 3rd element in a column to leak over the bottom, then you can set a negative bottom margin on the GridView itself.
You virtually erased the GridView control template, so no wonder it doesn't work. Remove the following part and things might get back to normal:
<GridView.Template>
<ControlTemplate>
<ItemsPresenter />
</ControlTemplate>
</GridView.Template>
If there is something you want changed in the default template - change that specific thing. The default template has a horizontal ScrollViewer which limits vertical space use by the WrapGrid that is used for its ItemsPanelTemplate and allows items to wrap to next column, while also allowing to scroll horizontally to see all items.