Im trying to display some items, for which, right now, I'm using a HorizontalStackLayout.
They should be displayed horizontally, but instead of acting like this:
Where the thrid item is not displayed fully and the following Items are not displyed at all, they should be wrapped to the next line. Which would look like (or similar to) this:
Is this possible with a HorizontalStackLayout or is there any other View that could create an effect like this?
The xaml for the Stacklayout looks like this at the moment:
<HorizontalStackLayout Grid.Column="1" BindableLayout.ItemsSource="{Binding DisplayedUserActions}" Margin="10">
<BindableLayout.ItemTemplate>
<DataTemplate>
<Border BackgroundColor="White" HeightRequest="150" MinimumWidthRequest="180" Margin="5">
<Border.StrokeShape>
<RoundRectangle CornerRadius="20,20,20,20"/>
</Border.StrokeShape>
<Grid RowDefinitions="*,*">
<Border Grid.Row="0" StrokeThickness="2" Stroke="lightgray" BackgroundColor="AliceBlue" Margin="2">
<Border.StrokeShape>
<RoundRectangle CornerRadius="20,20,20,20"/>
</Border.StrokeShape>
</Border>
<Label Grid.Row="1" VerticalOptions="Center" HorizontalOptions="Center" Text="{Binding Title}" TextColor="Black"></Label>
</Grid>
</Border>
</DataTemplate>
</BindableLayout.ItemTemplate>
</HorizontalStackLayout>
StackLayout does just that, it stacks. Be it Horizintally or vertically, it stacks one item after another. It will never make an additional row if horizontal, or another column if vertical.
The FLexLayout however does have a Wrap property for this exact scenario. Couple with the FlexDirection you should be able to wrap it any which way.
Depending on how you want to display your items, between all the different layouts available, you should be able to find one that suits your needs.
Related
At the moment, I keep repeating the XAML below used in titles what I want to improve.
<Border Grid.Row="1" Grid.Column="1" Background="{StaticResource Brush.Black24}" CornerRadius="4">
<TextBlock Margin="8" FontFamily="Segoe UI Semibold" FontSize="14" Foreground="White" VerticalAlignment="Center" Text="BUILT IN MODULES"/>
</Border>
Apparently TextBlocks have no template. I think creating a UserControl is a bit excessive. In addition, I would have to deal with Attached Properties. Any ideas?
I'd really like to use RelativePanel in a UWP app I'm writing, to simplify visual state.
This is what I want
I've tried to achieve this with the following XAML:
<RelativePanel>
<TextBlock x:Name="Title" Height="50" Margin="15" FontSize="24"
RelativePanel.AlignTopWithPanel="True"
RelativePanel.AlignLeftWithPanel="True"
RelativePanel.AlignRightWithPanel="True">
</TextBlock>
<TextBox x:Name="Editor" Margin="15" Padding="20" HorizontalAlignment="Stretch"
RelativePanel.AlignLeftWithPanel="True"
RelativePanel.Below="Title"
RelativePanel.RightOf="FileList">
</TextBox>
<ListView x:Name="FileList" HorizontalAlignment="Stretch" Margin="15"
RelativePanel.AlignRightWithPanel="True"
RelativePanel.Below="Title">
</ListView>
</RelativePanel>
This isn't working. Editor does not stretch. If I set Editor to RelativePanel.AlignRightWith="FilesList", it stretches past files list and fills the window.
Is there any way to do what I want with RelativePanel? Please don't post suggestions on how to do this in Grid, I can already do that - I want to use RelativePanel in this case
Your Editor control should have -
RelativePanel.AlignLeftWithPanel="True"
RelativePanel.Below="Title"
RelativePanel.LeftOf="FileList"
RelativePanel.AlignBottomWithPanel="True"
Note it should be LeftOf, not RightOf. You will also need AlignBottomWithPanel set to True.
I use a GridView to display photos and I search an elegant way to allow user to add a new item to a form.
The form contains a lot of fields: it is displayed in a Pivot, where each PivotItem represents a category of the form.
Some categories contain one or more child items: they are displayed through a Master-Detail page.
It's in this page that I need to display a list of photos: as a photo represents a "sub sub item" of the form, I wouldn't manage the add of a new photo through the CommandBar. But I would like to use an "Add" button after the last item of the GridView containing the photos.
At this time I only found a solution that partially work:
Here is the XAML:
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Text="Photos" Grid.Row="0"/>
<StackPanel Orientation="Horizontal" Grid.Row="1">
<GridView ItemsSource="{Binding images}">
<GridView.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Gray" BorderThickness="1"
Padding="10"
Height="150" Width="190">
<Image Stretch="UniformToFill"
Source="{Binding bitmap_image}" />
</Border>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
<Border BorderBrush="Gray" BorderThickness="1"
Padding="10"
Height="150" Width="190">
<Button Command="{Binding Path=DataContext.AddPhotoCommand, ElementName=DetailsPage}"
Height="100" Width="100">
<Viewbox>
<SymbolIcon Symbol="Add"/>
</Viewbox>
</Button>
</Border>
</StackPanel>
</Grid>
As I use a StackPanel, the Add button is no longer visible if I display 3 photos...
=> Is there a better way to do this? Or do you see a an alternative? I'm looking for doing this through a DataTemplateSelector, but that would require me to create a "false" object for displaying the add button...
As I use a StackPanel, the Add button is no longer visible if I display 3 photos...
If you don't mind the button is in the next line of your last photo, you can use WinRTXamlToolkit's WrapPanel instead of StackPanel to avoid the pictures goes out of the window and put the button inside the GridView's FooterTemplate:
Xaml:
<Page
x:Class="AddButtonSample.MainPage"
xmlns:controls="using:WinRTXamlToolkit.Controls"
...
mc:Ignorable="d">
<Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock Text="Photos" Grid.Row="0"/>
<controls:WrapPanel Orientation="Horizontal" Grid.Row="1">
<GridView ItemsSource="{Binding images}">
<GridView.FooterTemplate>
<DataTemplate>
<Button Command="{Binding Path=AddPhotoCommand}" Height="100" Width="100">
<Viewbox>
<SymbolIcon Symbol="Add"/>
</Viewbox>
</Button>
</DataTemplate>
</GridView.FooterTemplate>
<GridView.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Gray" BorderThickness="1"
Padding="10"
Height="150" Width="190">
<Image Stretch="UniformToFill"
Source="{Binding bitmap_image}" />
</Border>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
</controls:WrapPanel>
</Grid>
Result:
If you really want to put the Button side by side after the last item of GridView. The only Option is DataTemplateSelector.
The best solution might be to use a CommandBar and put the "Add" button in the very bottom of the panel, as that would be most consistent with UWP design guidelines. GridView also has a FooterTemplate, which allows you to add some XAML in the footer of the whole GridView (but not directly after the items).
If you still want to have the add item as part of the GridView contents, you will really need to use the fake item and a DataTemplateSelector. This solution is not very clean, but probably is the only simple way.
I tried to do something similar for my own app too, but there really isn't an obvious way to achieve it. A little background on what my app does: it's a flashcard app that displays decks of card in a gridview on the homepage, with an add button being at the front of the gridview. This is what I did:
for my deck class, I gave it a bool attribute isButton
in the observablecollection of decks, set the first item's isButton to true
make two datatemplates for the gridview (deck and button) and make a data template picker for the gridview, and check the isButton attribute
if isButton is true, the template picker will use the button template
otherwise use deck template
I have a UWP where I am loading from an XML file and showing it in a GridView and I am trying to enable Scrollbars in a way that allows me to stack and wrap items in all the available space like in the image below. The problem that I am having is that I cannot figure out how to enable the scrollbars so that I can scroll the boxes until I get to the end of the list.
So far I have got it to do what you see in the picture, which is wrapped the way I want but it fills all the available space and doesn't allow you to scroll vertically or horizontally (I only want to scroll one way but I have tried to see if I could go either way). Through a lot of trial and error I was able to get it to scroll one row or one column at a time to the end of the list but that is not the desired result either. Here is where I am with the XAML right now (trimmed down version of the screen shot).
<GridView x:Name="DataGrid1">
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid Orientation="Horizontal"
ScrollViewer.HorizontalScrollBarVisibility="Visible"
ScrollViewer.VerticalScrollBarVisibility="Disabled" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.ItemTemplate>
<DataTemplate>
<Border Width="270"
Height="200"
Margin="5"
BorderBrush="Black"
BorderThickness="2">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="70" />
<ColumnDefinition Width="100*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<StackPanel Grid.Row="0"
Grid.Column="0"
Grid.ColumnSpan="2"
Background="#87CEFA">
<TextBlock Margin="2"
HorizontalAlignment="Center"
FontSize="16"
FontWeight="Bold"
Text="{Binding Company}" />
</StackPanel>
<TextBlock Grid.Row="1"
Grid.Column="0"
Margin="2"
HorizontalAlignment="Right"
FontWeight="Bold"
Text="Code: " />
<TextBlock Grid.Row="1"
Grid.Column="1"
Margin="2"
Text="{Binding Code}" />
</Grid>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
So what do I need to do to enable the scrollbars the way that I want?
Make sure your GridView is in a Grid and not a StackPanel. It does not expand in a StackPanel.
To make it scroll in a StackPanel you have to specify the height of the GridView. This was the issue with mine :)
To my knowledge gridviews that are not showing scrollbars automatically are due to stackpanel's presence. So my solution here is to try remove stackpanel what so ever, and if I find the stackpanel that's responsible replace it with other kind of panel and work my way back up. It's totally a brute force kind of approach but it works most of the time.
And another piece of advice. In that process of replacing the stackpanel try to replace it with grid and try to divide it's rows and columns with widths and heights set to auto or star sizing instead of specifying it with actual numbers to see if it works this way. If it works then work your way up speicifying it with actual numbers.
Here's your problem, in the definition of the ItemsWrapGrid you have:
ScrollViewer.VerticalScrollBarVisibility="Disabled"
this is going to mean that even if the scrollbar is shown it wont work.
Remove this line and you should get a working scrollbar.
I started off with a Grouped Items Page template and have my data displaying in groups. I added some margins around these items to improve spacing, but now when I hover over these items, the margin area shows as highlighted. I'm sure this is an easy one for xaml gurus. Please assist!!
Here's my markup:
<GridView.ItemTemplate>
<DataTemplate>
<!-- ******************* here is my margins ******************* -->
<Border BorderBrush="LightGray" BorderThickness="2" Margin="0,0,20,20">
<Grid HorizontalAlignment="Left" Width="390" Height="190">
<Grid.Background>
<ImageBrush ImageSource="/Assets/default.png" Stretch="None"/>
</Grid.Background>
<StackPanel Orientation="Horizontal" VerticalAlignment="Top">
<Image VerticalAlignment="Top" Stretch="None" Source="{Binding ImageUrl}" Margin="10,10,0,0"/>
<StackPanel MaxWidth="270">
<TextBlock Text="{Binding Summary}"/>
<TextBlock Text="{Binding Brand}" />
<TextBlock Text="{Binding Detail}" TextWrapping="Wrap" />
</StackPanel>
</StackPanel>
</Grid>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
Your ItemTemplate just populates over the existing style template for the GridViewItem Style which if you look in the default template shown in that link you'll see a Rectangle named "PointerOverBorder" which is shown (via the VisualStateManager) in the PointerOver state with its Fill set to ListViewItemPointerOverBackgroundThemeBrush.
You could go into the template (right-click, edit template) and remove it, or add your margins, or make it transparent or a number of options. Or could just overwrite the brush resource on the instance to be transparent or something kind of like;
<blah.Resources>
<SolidColorBrush x:Key="ListViewItemPointerOverBackgroundThemeBrush" Color="Transparent" />
</blah.Resources>
Hope this helps.