In my Windows 8.1/Windows Phone 8.1 App, I have a GridView and I want to change my VisualState after an item is selected. I can do this easy with behavior like this :
<GridView IsItemClickEnabled="True" ItemsSource="{Binding Collections}" SelectedItem="{Binding SelectedItem,Mode=TwoWay}">
<Interactivity:Interaction.Behaviors>
<Core:EventTriggerBehavior EventName="SelectionChanged">
<Core:GoToStateAction StateName="NextVisualState"/>
</Core:EventTriggerBehavior>
</Interactivity:Interaction.Behaviors>
<GridView.ItemTemplate>
<DataTemplate >
<Grid Width="80" Height="80">
<TextBlock Text="{Binding ItemName}" HorizontalAlignment="Center" VerticalAlignment="Center"></TextBlock>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid Orientation="Horizontal" MinWidth="150"></ItemsWrapGrid>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
The problem occur when my item is already selected (The user can be on this VisualState with the Item already selected by binding or something), I want the SelectionChanged event to be fired if the user click on an item that already selected (so he can go to the next VisualState).
I try to change the VisualState on the ItemClick event but the event is fired before the item is selected so it's not working.
<GridView ItemsSource="{Binding Collections}" SelectedItem="{Binding SelectedItem,Mode=TwoWay}" x:Name="MyGridView">
<GridView.ItemTemplate>
<DataTemplate>
<Grid Width="80" Height="80" Background="Transparent">
<Interactivity:Interaction.Behaviors>
<Core:EventTriggerBehavior EventName="Tapped">
<Core:InvokeCommandAction Command="{Binding DataContext.ChangeStateCommand, ElementName=MyGridView}" CommandParameter="NextState"></Core:InvokeCommandAction>
</Core:EventTriggerBehavior>
</Interactivity:Interaction.Behaviors>
<TextBlock Text="{Binding ItemName}" HorizontalAlignment="Center" VerticalAlignment="Center"></TextBlock>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid Orientation="Horizontal" MinWidth="150"></ItemsWrapGrid>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
I had to set a background in the Grid Datatemplate to make the whole Grid clickable I don't know why.
Select your Gridview control
Change selected Index property from 0 to -1
I'm not sure whether it works or not, but you can try.
Related
I am looking to add WrapPanel inside my ListBox so that it's item wrap both vertically and horizentally. I was able to achieve this in Windows Phone 8 Sliverlight with Microsoft toolkit with below code;
Windows Phone 8
<ListBox x:Name="ListSection" ItemsSource="{Binding Section}" >
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel Orientation="Horizontal" ></toolkit:WrapPanel>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="20">
<Image Source="{Binding ImagePath}" Width="80" Height="80"></Image>
<TextBlock Style="{StaticResource PhoneTextBlockBase}"
HorizontalAlignment="Center"
Foreground="Black"
Text="{Binding Header}"
FontWeight="Bold"
VerticalAlignment="Center" />
</StackPanel>
</DataTemplate>
I understand that Microsoft toolkit it not available in UWP, is there any possibility I could achieve such behavior in UWP?
UWP not working
<ListBox x:Name="ItemsListBox" ItemsSource="{Binding Section}">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel HorizontalAlignment="Stretch"></StackPanel>
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<Image Source="{Binding ImagePath}" Width="80" Height="80"></Image>
<TextBlock HorizontalAlignment="Center"
Foreground="Black"
Text="{Binding Header}"
FontWeight="Bold"
VerticalAlignment="Center" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Thanks!
You must use ListView and ItemsWrapGrid as ItemsPanel
you can check the MSDN docs here with examples
https://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.itemswrapgrid.aspx
This example is for GridView but is the same for ListView
<GridView>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsWrapGrid Orientation="Horizontal"/>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
you can use the property Orientation to set your items vertically or horizontally.
There is a port of the Toolkit's WrapPanel for UWP in the project WinRTXamlToolkit.
You can get it from NuGet.
Then in your Page add this prefix:
xmlns:toolkit="using:WinRTXamlToolkit.Controls"
Now you can use <toolkit:WrapPanel Orientation="Horizontal" ></toolkit:WrapPanel> as it was before.
#ARH you need to create a custom Panel class which inherits panel class and override MeasureOverride and ArrangeOverride methods.check out following links for reference.
https://msdn.microsoft.com/en-us/library/windows/apps/mt228347.aspx
http://www.visuallylocated.com/post/2015/02/20/Creating-a-WrapPanel-for-your-Windows-Runtime-apps.aspx
The WrapPanel is available from the Microsoft UWP Toolkit.
Here's some sample code (using v5.0.0):
...
xmlns:toolkit="using:Microsoft.Toolkit.Uwp.UI.Controls"
...
<ListView
Name="WrapPanelContainer"
Width="310" Height="200"
Margin="0,40,0,0"
HorizontalAlignment="Left"
Background="LightBlue"
IsItemClickEnabled="True"
>
<ListView.Resources>
<Style TargetType="ListViewItem">
<Setter Property="MinWidth" Value="0"/>
<Setter Property="MinHeight" Value="0"/>
<Setter Property="Padding" Value="0"/>
</Style>
</ListView.Resources>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel VerticalSpacing="10" HorizontalSpacing="10" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<Rectangle Fill="Red" Width="100" Height="50"/>
<Rectangle Fill="Blue" Width="200" Height="50"/>
<Rectangle Fill="Green" Width="50" Height="50"/>
<Rectangle Fill="Yellow" Width="150" Height="50"/>
</ListView>
NOTE: The ListItemView style here removes superfluous padding, allowing the WrapPanel spacing properties to be the control points for layout.
I am developing an application and I have an image control that displays however many images are stored in the database. So I have got the images to display. However the images are displaying below the previous one and not next to the previous one.
(ignore the names next to the picture I have taken them out now).
So my question is what method can I use to get them aligned, I'm not sure what I need to search for in Google, everything I can think of doesnt bring back anything close to what I am looking for. The XAML code is below:
<Grid x:Name="LayoutRoot" Background="Transparent">
<!--Pivot Control-->
<phone:Pivot Title="Share This!">
<!--Pivot item one-->
<phone:PivotItem Header="All Photos">
<Grid>
<ListBox Height="559" HorizontalAlignment="Left" Margin="6,20,0,0" x:Name="lst_viewPhotos" VerticalAlignment="Top" Width="444" FontSize="30" ItemsSource="{Binding}" SelectionChanged="lst_viewPhotos_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0,10,0,0" >
<Image Source="{Binding}" HorizontalAlignment="Left" Height="100" Width="100"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</phone:PivotItem>
</phone:Pivot>
</Grid>
You can get them displaying alongside each other by setting the ItemsPanel
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
However I would recommend a GridView for this so that you can use a Wrapgrid which will reach the end of a Row or Column and wrap to a new Row or Column.
Something like this
<GridView>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<WrapGrid Orientation="Horizontal" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
I need to create a vertical scrolling list view with grouping enabled as shown below:
This is what I currently have:
<common:VariableSizeListViewWithSelection ItemsSource="{Binding Source={StaticResource cvs}}"
ScrollViewer.VerticalScrollBarVisibility="Auto"
IsItemClickEnabled="True"
ItemTemplateSelector="{StaticResource summaryViewTemplateSelector}" >
<GroupStyle>
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Grid Margin="0,0,0,2">
<TextBlock Grid.Column="0" Text="{Binding Title}" Margin="0,-11,10,10" Style="{StaticResource SubheaderTextBlockStyle}" TextWrapping="NoWrap" FontWeight="SemiBold" Foreground="#333333" />
</Grid>
</DataTemplate>
</GroupStyle.HeaderTemplate>
</GroupStyle>
<common:VariableSizeListViewWithSelection.GroupStyle>
<GroupStyle HidesIfEmpty="True">
<GroupStyle.HeaderTemplate>
<DataTemplate>
<Grid Background="LightGray" Margin="0">
<TextBlock Text='{Binding Title}' Foreground="Black" Margin="5" Style="{StaticResource HeaderTextBlockStyle}"/>
</Grid>
</DataTemplate>
</GroupStyle.HeaderTemplate>
<GroupStyle.Panel>
<ItemsPanelTemplate>
<WrapGrid Orientation="Horizontal" MaximumRowsOrColumns="4" Width="300" />
</ItemsPanelTemplate>
</GroupStyle.Panel>
</GroupStyle>
</common:VariableSizeListViewWithSelection.GroupStyle>
</common:VariableSizeListViewWithSelection>
But this is not working as expected and it creates a listview with correct grouping but with just one column like this:
Can you please point me as to what am I doing wrong?
We took it offline for a bit and it seems like changing the ItemsPanel of the ListView to a StackPanel make this work. I have a feeling the default ItemsStackPanel should still support grouping, but perhaps not with a custom group layout panel. Maybe there is a way to reconfigure a GridView to scroll vertically and this could work too.
I am trying to fire event on tap of listbox item and get the item clicked but the tap event is not firing, please help.
<ListBox Margin="0,40,0,0"
ItemsSource="{Binding Documents}" IsHitTestVisible="True"
Width="450"
VirtualizingStackPanel.VirtualizationMode="Recycling">
<ListBox.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel Orientation="Horizontal" />
</ItemsPanelTemplate>
</ListBox.ItemsPanel>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Height="150" Margin="5"
Width="150" Background="Aqua">
<TextBlock Text="{Binding Name}" VerticalAlignment="Center" HorizontalAlignment="Center" />
<i:Interaction.Triggers>
<i:EventTrigger EventName="Tap">
<commands:MvxEventToCommand Command="{Binding OpenFileCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Are you sure the event never get fired? Maybe you were tapping outside the Grid? Listbox item content (the grid in this case) is not stretcing throughout listbox width, it is aligned left by default. To confirm, try to tap at left most area of listbox item and see if the event fired with that.
Assuming the problem is caused by listbox item content not stretching, you can try to set HorizontalContentAlignment="Stretch" to fix it :
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
</Style>
</ListBox.ItemContainerStyle>
<GridView
Grid.Row="1"
AutomationProperties.AutomationId="ItemGridView"
AutomationProperties.Name="Grouped Items"
ItemsSource="{Binding ServiceOrderList}"
ItemTemplate="{StaticResource ServiceOrderListItemTemplate}"
SelectedItem="{Binding SelectedServiceOrder, Mode=TwoWay}"
IsSwipeEnabled="false">
<winRtBehaviors:Interaction.Behaviors>
<behaviors:EventToBoundCommandBehavior
Command="{Binding ServiceOrderItemClickCommand}"
Event="Tapped" />
</winRtBehaviors:Interaction.Behaviors>
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<WrapGrid Orientation="Vertical" MaximumRowsOrColumns="3" />
</ItemsPanelTemplate>
</GridView.ItemsPanel>
</GridView>
I want use to be able to do a left click on the items of gridview but dosn't want to allow them to right click and select an item, please help.
If you don't want the items to be selectable at all, set SelectionMode="None" and IsItemClickEnabled="True" along with setting an ItemClick event.
If you want them to be selectable, but only left click, you can set IsRightClickEnabled="False".
Another way is put RightTapped event in your GridView.ItemTemplate which is implement : e.Handled = true
<GridView>
<GridView.ItemTemplate>
<DataTemplate>
<Grid Margin="30,10"
Width="350" Tapped="Grid_Tapped_1" RightTapped="Grid_RightTapped">
<StackPanel Orientation="Vertical">
<StackPanel Orientation="Horizontal">
<Image Height="40" Source="{Binding Path=Image}" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="0,-3,11,0"/>
<TextBlock FontSize="24" FontWeight="SemiBold" FontFamily="Segoe WP" Foreground="#232323" Text="{Binding Path=RoomTypeString}" VerticalAlignment="Center"/>
</StackPanel>
<TextBlock FontSize="24" Text="{Binding Path=RoomCountString}"
Foreground="#232323" FontFamily="Segoe WP"
TextTrimming="CharacterEllipsis"/>
</StackPanel>
</Grid>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>