I want to display 3 images in a row in an ListBox. I can't use WrapPanel because it will lose virtualization. So I use VirtualizingStackPanel.
In my ListBoxItem template, I have 3 images in a horizontal StackPanel. I want to allow user to click on a single image, but ListBox's default behavior only allows to click a whole ListBoxItem.
How to do that ?
If you don't want selection on the full row, you should switch to an ItemsControl instead of a ListBox.
To allow selection of images on every row set the ItemTemplate of this ItemsControl to a ListBox, binded to a collection of images.
Here is some sample code that should work:
<ItemsControl ItemsSource="{Binding Collection}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<!--THe ItemTemplate is a ListBox of Images-->
<ListBox>
<ListBox.ItemTemplate ItemsSource="{Binding Images}">
<DataTemplate>
<Image Source="{Binding Img}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<VirtualizingStackPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<!--This is required to have the scroll-->
<ItemsControl.Template>
<ControlTemplate TargetType="ItemsControl">
<Border>
<ScrollViewer>
<ItemsPresenter/>
</ScrollViewer>
</Border>
</ControlTemplate>
</ItemsControl.Template>
</ItemsControl>
Related
I have a sample data bounded to the listbox datatemplate and each item has a MouseDragElementBehavior with ConstrainToParentBounds false. I want to dragging any item in the listbox to any space in the page. However, Items are still bounded to the Listbox. Any Suggestions? AllowDrop property does not work on Windows Phone.
<ListBox x:Name="countryName" HorizontalAlignment="Left" Height="361" Margin="10,10,0,0" VerticalAlignment="Top" Width="436">
<i:Interaction.Behaviors>
<el:MouseDragElementBehavior ConstrainToParentBounds="False"/>
</i:Interaction.Behaviors>
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}">
</TextBlock>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I want to add the context menu to ListBox in WP7, I modify the data template as following below:
<ListBox Name="lbx1" Margin="10,0,10,0" Height="435" ItemContainerStyle="{StaticResource ListBoxItemStyle1}" FontSize="40" Tap="lbx1_Tap" >
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<toolkit:ContextMenuService.ContextMenu>
<toolkit:ContextMenu>
<toolkit:MenuItem Header="Copy" Click="ListBoxGeneralCopy_Click"/>
</toolkit:ContextMenu>
</toolkit:ContextMenuService.ContextMenu>
<TextBlock Text="{Binding .}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I can only cause tap and hold event to show the contextmenu above the text, the non-text region could not cause the event, I really confused. Does someone can help me?
Your textbloc will only occupy so much space as necessary. Therefore your stackpanel will also only be as wide as necessary.
You can set the HorizontalAlignment-value of both to stretch so it occupies the whole width:
<ListBox Name="lbx1" Margin="10,0,10,0" Height="435" ItemContainerStyle="{StaticResource ListBoxItemStyle1}" FontSize="40" Tap="lbx1_Tap" >
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel HorizontalAlignment="Stretch">
<toolkit:ContextMenuService.ContextMenu>
<toolkit:ContextMenu>
<toolkit:MenuItem Header="Copy" Click="ListBoxGeneralCopy_Click"/>
</toolkit:ContextMenu>
</toolkit:ContextMenuService.ContextMenu>
<TextBlock Text="{Binding .}" HorizontalAlignment="Stretch"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Set StackPanel background property.
When background is transparent cannot work, and hold event is fired only in non-transparent region of stackpanel such as text-regions.
Am developing a simple app for learning pivot control in wp7.
can we add images for pivot item instead of text in header(red mark area in bellow image ).
is it possible to add images, please suggest me
my xaml code is:
<Grid x:Name="LayoutRoot" Background="Transparent">
<!--Pivot Control-->
<controls:Pivot Title="MY APPLICATION" Name="mainPivot">
<!--Pivot item one-->
<controls:PivotItem Header="item1">
<Grid>
<Image Source="/SchoolList;component/Gallery/child.jpg"/>
</Grid>
</controls:PivotItem>
<!--Pivot item two-->
<controls:PivotItem Header="item2">
<Grid>
<Image Source="/SchoolList;component/Gallery/class.jpg"/>
</Grid>
</controls:PivotItem>
</controls:Pivot>
</Grid>
thanks in advance
use this tip :
<phone:Pivot>
<phone:Pivot.HeaderTemplate>
<DataTemplate>
<Image Source="{Binding}" /> // important
</DataTemplate>
</phone:Pivot.HeaderTemplate>
</phone:Pivot>
and then set your Pivot Item header as
<phone:PivotItem Header="path-to-image" >
Yes it is. Simply use HeaderTemplate
<Pivot>
<Pivot.HeaderTemplate>
<DataTemplate>
<Image ... />
</DataTemplate>
</Pivot.HeaderTemplate>
</Pivot>
May I also add that while this is generally possible, it is not recommended for the general use. Unless you need pivot functionality for something completely different. It is somewhat non intuitive.
with the Idea of #toni petrina i added images to the HeaderTemplate to the pivot control using data binding. am implemented image gallery in my app using pivot with images in header template gives great look and feel
Xaml code is :
<controls:Pivot Title="Photo Gallery" Name="mainPivot" ItemsSource="{Binding PivotImages}">
<controls:Pivot.HeaderTemplate>
<DataTemplate>
<Image Name="play" Source="{Binding imgSrc}" Height="80" Width="120" Margin="0,10,0,0"/>
</DataTemplate>
</controls:Pivot.HeaderTemplate>
<controls:Pivot.ItemTemplate>
<DataTemplate>
<Grid>
<Image Name="mainImage" Source="{Binding imgSrc}" />
</Grid>
</DataTemplate>
</controls:Pivot.ItemTemplate>
</controls:Pivot>
and i have created a simple class with one string property to save the images source and prepared a List and assigned to the pivot ItemsSource on page loaded event
mainPivot.ItemsSource = items; // items is the list with image sources
I'm just starting out in WinPhone development and can't figure out how to set the vertical scroll. For example i've started a new Pivot App, and this code allows the user to scroll up and d own to see all the entries:
<controls:PivotItem Header="Login">
<!--Double line list with text wrapping-->
<ListBox x:Name="FirstListBox" Margin="0,0,-12,0" ItemsSource="{Binding Items}">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,0,0,17" Width="432" Height="78">
<TextBlock Text="{Binding LineOne}" TextWrapping="Wrap" Style="{StaticResource PhoneTextExtraLargeStyle}"/>
<TextBlock Text="{Binding LineTwo}" TextWrapping="Wrap" Margin="12,-6,12,0" Style="{StaticResource PhoneTextSubtleStyle}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</controls:PivotItem>
Now when, I add my own pivot item, with a stackpanel with more items than can be seen on the screen at any one time, it will not allow me to scroll to see them all. What am I missing here?
Thanks.
Add ScrollViewer over the StackPanel and it will make it scrollable.
The ListBox in the example code that you supplied ha built-in scrolling functionality. However, if you are not using something that already has this scrolling functionality in it, you will have to add a ScrollViewer.
<controls:PivotItem Header="Example">
<ScrollViewer Margin="12,0,12,0">
<StackPanel>
<TextBlock Text="Example1" FontSize="150" />
<TextBlock Text="Example2" FontSize="150" />
</StackPanel>
</ScrollViewer>
</controls:PivotItem>
In a pivot control, if the content is overflowing the vertical page then there should be default "vertical" scrolling available to you.
I had a similar control with list box bounded to property. Having "list" should automatically allow you to scroll.
Don't add a scrollviewer over the stack panel as it would make the scrolling enabled for each list item which you don't want.
<controls:PivotItem Header="all authors" Foreground="#FF0C388A">
<Grid>
<ListBox Margin="0,0,-12,0" ItemsSource="{Binding AllAuthorsList}" Foreground="#FF0C388A">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Margin="0,0,0,17" Width="432" Height="Auto">
<TextBlock Tap="TextBlockAuthor_Tap" Text="{Binding}" TextWrapping="Wrap" Style="{StaticResource PhoneTextExtraLargeStyle}" Foreground="#FF0C388A"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</controls:PivotItem>
i created an app to track tweets and binding it to listBox.
and, here is the xaml of the listBox:
<ListBox Margin="0,0,-12,0" x:Name="listBox1" ItemsSource="{Binding Items}" SelectionChanged="listBox1_SelectionChanged">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Margin="0,0,0,17">
<!--Replace rectangle with image-->
<Image Height="100" Width="100" Source="{Binding DeveloperImage}" Margin="12,0,9,0"/>
<StackPanel Width="311">
<TextBlock Text="{Binding DeveloperName}" TextWrapping="Wrap" Style="{StaticResource PhoneTextExtraLargeStyle}"/>
<TextBlock Text="{Binding DeveloperBirthday}" TextWrapping="Wrap" Margin="12,-6,12,0" Style="{StaticResource PhoneTextSubtleStyle}"/>
</StackPanel>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
but, when it was debugged, it returned into this sequence:
long blank
content
blank
what i want is:
content only, no blanks befor the content and no blanks after the content.
The way a ListBox arranges its Children is determined by its ItemsPanel.
You can replace the default ItemsPanel by setting the ItemsPanelTemplate.
Each Child is then wrapped in an ItemContainer.
You can replace the default ItemContainer by setting the ItemContainerStyle.
Finally, the ListBox itself has a border, padding and margin that influence where the ItemsPanel is placed.
So if you want to adjust the placement of the content of the listbox you will first have to find out what template(s) should be modified. A quick way is to use Blend because it will give you visual feedback.