How to get ListBox Item height - c#

Here I have a ListBox:
<ListBox Name="listbox1" ItemsSource="{Binding Area}" Grid.Column="0" Grid.Row="0" HorizontalContentAlignment="Stretch">
<ListBox.ItemTemplate>
<DataTemplate>
<Border BorderBrush="Green" BorderThickness="2" Margin="5" >
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="1*"/>
<RowDefinition Height="1*"/>
<RowDefinition Height="2*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="2*" />
<ColumnDefinition Width="8*" />
</Grid.ColumnDefinitions>
<DockPanel Grid.Row="0" Grid.Column="0" Margin="2">
<TextBox PreviewTextInput="minMaxPreviewInput" IsReadOnly="{Binding AutoChange}" Text="{Binding MinIntValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="30" DockPanel.Dock="Right" TextAlignment="Right"/>
<TextBlock Text="Minimum Value" DockPanel.Dock="Left"/>
</DockPanel>
<DockPanel Grid.Row="1" Grid.Column="0" Margin="2">
<TextBox PreviewTextInput="minMaxPreviewInput" IsReadOnly="{Binding AutoChange}" Text="{Binding MaxIntValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Width="30" DockPanel.Dock="Right" TextAlignment="Right"/>
<TextBlock Text="Maximum Value" DockPanel.Dock="Left"/>
</DockPanel>
<DockPanel Grid.Row="2" Grid.Column="0" Margin="2">
<TextBlock Text="{Binding AreaName}" FontSize="20" DockPanel.Dock="Left"/>
<TextBlock Text=":" FontSize="20" DockPanel.Dock="Left"/>
<TextBlock Text="{Binding Start}" FontSize="20" DockPanel.Dock="Left"/>
<CheckBox FlowDirection="RightToLeft" DockPanel.Dock="Right" IsChecked="{Binding AutoChange, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
<TextBlock FlowDirection="LeftToRight" Text="Auto-Change:" />
</CheckBox>
</DockPanel>
<Border BorderBrush="Blue" BorderThickness="1" Grid.Column="1" Grid.RowSpan="3" Margin="5">
<Canvas Name="canvas1" >
<Canvas.LayoutTransform>
<ScaleTransform ScaleX="1" ScaleY="-1" CenterX=".5" CenterY=".5" />
</Canvas.LayoutTransform>
<Polyline Points="{Binding SegmentPoints}" Stroke="Black" StrokeThickness="1"/>
</Canvas>
</Border>
</Grid>
</Border>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Everything works as great. I'm having problem accessing the Canvas size. How can I access it? Listbox.ActualHeight and ListBox.ActualWidth are bigger than the Canvas, and I need to get the Canvas exact size.
Thanks for the help in advance.

As you are trying to base the value of other bound values on the Canvas size, use OneWayToSource mode on a Binding for ActualWidth and ActualHeight to some properties on your ViewModel.
This will push the values from the control into your ViewModel allowing you to adjust the values in SegmentPoints so that they are scaled correctly according to the Canvas size.

Related

Add xaml to top of Listbox

I have a listbox which is filled up with items taken from a data contract. I want to add a bit of xaml to the top of the listbox which takes data from another data contract. How do i go about doing this?
<phone:PivotItem>
<ScrollViewer>
<StackPanel>
<ListBox x:Name="StatusCommentsList"
Background="Transparent"
ItemsSource="{Binding StatusComments}"
u:ScrollViewerMonitor.AtEndCommand="{Binding FetchMoreStatusCommentsDataCommand}" VerticalContentAlignment="Top">
<!-- THIS DOESNT WORK-->
<ListBoxItem>
<Grid Height="auto">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="67" />
<ColumnDefinition Width="389"/>
</Grid.ColumnDefinitions>
<StackPanel Height="auto" Grid.Column="0" Background="Transparent">
<Border Background="Transparent" BorderThickness="0" Width="62" Height="62" HorizontalAlignment="Left" Margin="0,0,0,5">
<Image Source="{Binding Notification.context.data.created_by.image.thumbnail_link}" Width="62" Height="62"></Image>
</Border>
</StackPanel>
<StackPanel Height="auto" Grid.Column="1" Width="389" MaxWidth="389" Orientation="Vertical" >
<TextBlock TextWrapping="Wrap" Text="{Binding Notification.context.data.created_by.name}" HorizontalAlignment="Stretch" FontSize="30" VerticalAlignment="Center" Margin="0,0,0,5" Foreground="White" Width="389" MaxWidth="389" />
<TextBlock TextWrapping="Wrap" Text="{Binding Notification.context.data.created_on}" HorizontalAlignment="Stretch" FontSize="30" VerticalAlignment="Center" Margin="0,0,0,5" Foreground="White" Width="389" MaxWidth="389" />
<TextBlock TextWrapping="Wrap" Text="{Binding Notification.context.data.rich_value}" HorizontalAlignment="Stretch" FontSize="30" VerticalAlignment="Top" Margin="0,0,0,5" Foreground="White" Width="389" MaxWidth="389" />
</StackPanel>
</Grid>
</ListBoxItem>
<!-- /THIS DOESNT WORK -->
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel VerticalAlignment="Top" Margin="5,0,0,0">
<Button Style="{StaticResource JamesTransparentButton}" Padding="-5,0,-5,-5" Margin="-7,-12,-7,-7" Height="auto" BorderThickness="0" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" HorizontalContentAlignment="Left" UseLayoutRounding="True" FontSize="0.01">
<Grid Height="auto">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="67" />
<ColumnDefinition Width="389"/>
</Grid.ColumnDefinitions>
<StackPanel Height="auto" Grid.Column="0" Background="Transparent">
<Border Background="Transparent" BorderThickness="0" Width="62" Height="62" HorizontalAlignment="Left" Margin="0,0,0,5">
<Image Source="{Binding created_by.image.thumbnail_link}" Width="62" Height="62"></Image>
</Border>
</StackPanel>
<StackPanel Height="auto" Grid.Column="1" Width="389" MaxWidth="389" Orientation="Vertical" >
<TextBlock Text="{Binding created_by.name}" FontSize="30" VerticalAlignment="Top" Margin="0,0,0,5" Foreground="White" />
<TextBlock Text="{Binding created_on}" FontSize="30" VerticalAlignment="Top" Margin="0,0,0,5" Foreground="White" />
<TextBlock TextWrapping="Wrap" Text="{Binding value}" HorizontalAlignment="Stretch" FontSize="30" VerticalAlignment="Top" Margin="0,0,0,5" Foreground="White" Width="389" MaxWidth="389" />
</StackPanel>
</Grid>
</Button>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</ScrollViewer>
</phone:PivotItem>
I tried just adding a new item to the listbox but the data contract would mean i have to instantiate all the sub levels of objects and it would suckkk as they are different domains.
Keep in mind that i want the entire screen to scroll in union... so that it looks like one big long list, regardless of the first being like a default value.
Put the first item outside the ListBox and disable ScrollViewer for the ListBox so the whole thing will scroll together. Here's an example where the item is a simple TextBlock. You can change it to suit your requirement.
<ScrollViewer>
<StackPanel Orientation="Vertical">
<TextBlock Text="Item 1"/>
<ListBox ScrollViewer.VerticalScrollBarVisibility="Disabled">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding item}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</ScrollViewer>

How to style toolkit:ListPicker full mode in wp8

I am having problem styling the full mode of listpicker. I want it should fully cover the page but I see a margin from the left and up in full mode.
<toolkit:ListPicker Header="SELECT TRANSLATION" x:Name="lspTranslationLang"
SelectedItem="{Binding Name, Mode=TwoWay}" SelectionChanged="lspTranslationLang_SelectionChanged">
<toolkit:ListPicker.HeaderTemplate>
<DataTemplate>
<StackPanel>
<TextBlock FontWeight="Bold" Foreground="Black" Text="Select Translation"></TextBlock>
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.HeaderTemplate>
<toolkit:ListPicker.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock FontSize="30" Text="{Binding Language}" />
</StackPanel>
</DataTemplate>
</toolkit:ListPicker.ItemTemplate>
<toolkit:ListPicker.FullModeItemTemplate>
<DataTemplate>
Grid Margin="0">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Image Grid.Row="0" Margin="10,0,0,0" Width="30" Height="30" Grid.Column="0" Source="{Binding ImagePath}" ></Image>
<TextBlock Grid.Row="0" Padding="10,0,10,0" Grid.Column="1" Text="{Binding Language}" FontSize="30"/>
<TextBlock Grid.Row="1" Padding="10,0,10,0" Grid.Column="1" Text="{Binding Description}" FontSize="30"/>
<Line X1="0" X2="480" Y1="0" Y2="0" Grid.Row="1" Grid.ColumnSpan="2" VerticalAlignment="Bottom" StrokeThickness="1" Stroke="LightGray" />
</Grid>
</DataTemplate>
</toolkit:ListPicker.FullModeItemTemplate>
</toolkit:ListPicker>
How I can change the style for full mode of listpicker?
Check out this tutorial for customizing list picker from geekchamp.
Customizing list picker
Change the data template of the full mode property. And set the margins using expression blend. It is a good editor in customizing.
You must probably add the following property
ExpansionMode="FullScreenOnly"

Horizontal ListView items do not scroll when swiped in WinRT app?

I have a C# WinRT/8.1 app that uses a ListView with a child stack panel to show items in a horizontal row. That works fine, except I am having the same problem discussed in this SO post:
WinRT Xaml ListView - Touch doesn't scroll well
Except worse. My items don't scroll even when the fingertip is pressed on the margin between items. Unfortunately I don't have a parent Panorama control or ScrollView control to blame. How can I fix this?
NOTE: I switched to a ListView from a GridView because of SO posts I read that indicated GridView's with horizontal items are problematic, which was the case for me.
Here is the XAML for the page:
<Page
<!-- headers snipped for brevity -->
<Page.Resources>
<Converters:DebugBindingConverter x:Key="DebugBindingConverter"/>
<Converters:VideomarkLocationToString x:Key="VideomarkLocationToString"/>
<common:BooleanToVisibilityConverter x:Key="BooleanToVisibilityConverter"/>
<DataTemplate x:Key="HorzVideomarksItemTemplate1">
<Grid d:DesignWidth="977" d:DesignHeight="746" Height="121" Width="252">
<Grid.RowDefinitions>
<RowDefinition Height="20*"/>
<RowDefinition Height="52*"/>
<RowDefinition Height="23*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<TextBlock x:Name="txtLocation" TextWrapping="Wrap" Text="{Binding OffsetSecs, Converter={StaticResource VideomarkLocationToString}}" Grid.Row="2" />
<TextBlock x:Name="txtNote" Text="{Binding Text}" TextTrimming="CharacterEllipsis"/>
<Image x:Name="imgThumbnail" Grid.Row="1" Source="{Binding ThumbnailAsync}"/>
<!-- <TextBlock x:Name="txtTest2" HorizontalAlignment="Left" Margin="81,93,0,0" TextWrapping="Wrap"
Text="{Binding Videomarks, Converter={StaticResource DebugBindingConverter}}" VerticalAlignment="Top" Height="87" Width="150" FontSize="12"/> -->
</Grid>
</DataTemplate>
</Page.Resources>
<Grid x:Name="gridPage"
Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" Margin="25" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="897*"/>
<ColumnDefinition Width="469*"/>
</Grid.ColumnDefinitions>
<Grid.ChildrenTransitions>
<TransitionCollection>
<EntranceThemeTransition/>
</TransitionCollection>
</Grid.ChildrenTransitions>
<Grid.RowDefinitions>
<RowDefinition Height="140"/>
<RowDefinition Height="347*"/>
<RowDefinition Height="231*"/>
</Grid.RowDefinitions>
<!-- Back button and page title -->
<Grid x:Name="gridTopRow" Grid.ColumnSpan="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="120"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button x:Name="backButton" Margin="39,59,39,0" Command="{Binding NavigationHelper.GoBackCommand, ElementName=pageRoot}"
Style="{StaticResource NavigationBackButtonNormalStyle}"
VerticalAlignment="Top"
AutomationProperties.Name="Back"
AutomationProperties.AutomationId="BackButton"
AutomationProperties.ItemType="Navigation Button"/>
<TextBlock x:Name="pageTitle" Text="{StaticResource AppName}" Style="{StaticResource HeaderTextBlockStyle}" Grid.Column="1" TextWrapping="NoWrap" VerticalAlignment="Bottom" Margin="0,0,894,40" Tapped="pageTitle_Tapped"/>
<Button x:Name="exitButton"
Click="exitButton_Click"
Style="{StaticResource ClosePaneAppBarButtonStyle}" Margin="1065,27,0,9" Grid.Column="1" Width="100" Visibility="{Binding Main.IsDebuggerAttached, Converter={StaticResource BooleanToVisibilityConverter}, Mode=OneWay}" />
<Button x:Name="btnTest" Content="test" Grid.Column="1" HorizontalAlignment="Left" Margin="883,59,0,0" VerticalAlignment="Top" FontSize="36" Click="btnTest_Click" Visibility="Collapsed"/>
</Grid>
<WebView x:Name="webViewVideoPlayer" Grid.Row="1" ScriptNotify="ScriptNotifyPlayLocation" Margin="25" />
<Button x:Name="btnVideomark" Content="Bookmark" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="578,53,0,0" Height="54" FontSize="26.667" Click="btnVideomark_Click" Width="181"/>
<ListView
x:Name="listviewVideomarks" Grid.Row="2" Grid.ColumnSpan="2" Opacity="1" IsHitTestVisible="False" Margin="20"
ItemsSource="{Binding Videomarks.VideomarksCollection, Source={StaticResource Locator}}"
ItemTemplate="{StaticResource HorzVideomarksItemTemplate1}" SelectionMode="None"
>
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel x:Name="stackVideomarksHorz" Orientation="Horizontal">
</StackPanel>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>
<Border x:Name="borderAddVideomark" BorderThickness="5" Grid.ColumnSpan="2" Margin="369,53,319,112" Grid.Row="1" BorderBrush="#FF144989" CornerRadius="25" Opacity="0" IsHitTestVisible="False" Loaded="border_Loaded">
<Grid x:Name="gridAddVideomark" IsHitTestVisible="False" Grid.ColumnSpan="2" Grid.Row="1" Opacity="1" Grid.RowSpan="2">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="187*"/>
<ColumnDefinition Width="188*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="189*"/>
<RowDefinition Height="137*"/>
<RowDefinition Height="62*"/>
</Grid.RowDefinitions>
<TextBlock x:Name="lblVideomarkLocation" Grid.Column="1" TextWrapping="Wrap" Text="TextBlock" Margin="40,10,10,10" FontSize="18.667"/>
<TextBox x:Name="txtVideomarkNote" Grid.Row="1" TextWrapping="Wrap" Grid.ColumnSpan="2" Margin="10,10,10,2"/>
<Button x:Name="btnOk" Content="OK" HorizontalAlignment="Left" Margin="92,10,0,0" Grid.Row="2" VerticalAlignment="Top" Width="192" Foreground="White" FontSize="21.333" Height="45" Click="btnOk_Click"/>
<Button x:Name="btnCancel" Content="Cancel" HorizontalAlignment="Left" Margin="88,10,0,0" Grid.Row="2" VerticalAlignment="Top" Width="192" Foreground="White" FontSize="21.333" Height="45" Grid.Column="1" Click="btnCancel_Click"/>
<Rectangle x:Name="rectVideomarkThumbnail" Fill="#FFF4F4F5" Stroke="Black" Margin="10"/>
</Grid>
</Border>
</Grid>
</Page>
I am not sure which directions you are trying to scroll, but I think your problem will be fixed if you disable the StackPanel scroll and enable scrolling in both directions on the ListView.
<ListView
x:Name="listviewVideomarks" Grid.Row="2" Grid.ColumnSpan="2" Opacity="1" IsHitTestVisible="False" Margin="20"
ItemsSource="{Binding Videomarks.VideomarksCollection, Source={StaticResource Locator}}"
ItemTemplate="{StaticResource HorzVideomarksItemTemplate1}" SelectionMode="None"
ScrollViewer.HorizontalScrollMode="Auto" ScrollViewer.VerticalScrollMode="Auto"
>
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel x:Name="stackVideomarksHorz" Orientation="Horizontal"
ScrollViewer.HorizontalScrollMode="Disabled"
ScrollViewer.VerticalScrollMode="Disabled">
</StackPanel>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
</ListView>

Creating multiple tabitems from tabitem template in WPF C# XAML

I read many tutorials from MSDN about WPF styling and datatemplating and contenttemplating but no success.
I need to make same TabItems in my TabControl and I made manually TabItem which i want to use as host for Style and ContentTemplate for other TabItems in TabControl
<TabItem Header="1.semestar">
<Grid x:Name="GridSemestra">
<Grid.DataContext>
<ViewModel:PredmetVM/>
</Grid.DataContext>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="100"/>
<ColumnDefinition MinWidth="30"/>
</Grid.ColumnDefinitions>
<Grid.Children>
<ListBox x:Name="PredmetiLW" Grid.Row="0" BorderThickness="0" Grid.Column="0" ItemsSource="{Binding Predmeti}" HorizontalAlignment="Center" VerticalAlignment="Center" >
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Naziv}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<ListBox x:Name="RadioLW" Grid.Row="0" Grid.Column="1" BorderThickness="0" ItemsSource="{Binding Predmeti}" HorizontalAlignment="Center" VerticalAlignment="Center" >
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Ocjena}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Label Content="Prosjek Semestra :" HorizontalAlignment="Right" VerticalAlignment="Center" Grid.Row="1" Grid.Column="0" />
<Label x:Name="_prosjekSemestra" Grid.Row="1" Grid.Column="1" ContentStringFormat="F2" Content="{Binding _prosjek, Mode=OneWay}" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Label Content="Ostvareni ECTS-ovi :" HorizontalAlignment="right" VerticalAlignment="Center" Grid.Row="2" Grid.Column="0" />
<Label x:Name="_ectsSemestra" Grid.Row="2" Grid.Column="1" Content="{Binding _ectsovi, Mode=OneWay}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid.Children>
</Grid>
</TabItem>
This is how you define a style for any TabItem. In the example I created a white border and a black background for the Header content of the TabItem:
<Style TargetType="{x:Type TabItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Border BorderBrush="White" BorderThickness="5" Margin="2">
<Grid Width="100" Height="100" Background="Black">
<ContentPresenter x:Name="ContentSite"
VerticalAlignment="Center"
HorizontalAlignment="Center"
ContentSource="Header"
RecognizesAccessKey="True"/>
</Grid>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
If you want your items to render with same template set the ItemTemplate for your TabControl like below:
<TabControl ItemsSource="{Binding MyTabItems}">
<TabControl.ItemTemplate>
<DataTemplate>
<Grid x:Name="GridSemestra">
<Grid.DataContext>
<ViewModel:PredmetVM/>
</Grid.DataContext>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="100"/>
<ColumnDefinition MinWidth="30"/>
</Grid.ColumnDefinitions>
<Grid.Children>
<ListBox x:Name="PredmetiLW" Grid.Row="0" BorderThickness="0" Grid.Column="0" ItemsSource="{Binding Predmeti}" HorizontalAlignment="Center" VerticalAlignment="Center" >
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Naziv}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<ListBox x:Name="RadioLW" Grid.Row="0" Grid.Column="1" BorderThickness="0" ItemsSource="{Binding Predmeti}" HorizontalAlignment="Center" VerticalAlignment="Center" >
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Ocjena}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
<Label Content="Prosjek Semestra :" HorizontalAlignment="Right" VerticalAlignment="Center" Grid.Row="1" Grid.Column="0" />
<Label x:Name="_prosjekSemestra" Grid.Row="1" Grid.Column="1" ContentStringFormat="F2" Content="{Binding _prosjek, Mode=OneWay}" HorizontalAlignment="Center" VerticalAlignment="Center" />
<Label Content="Ostvareni ECTS-ovi :" HorizontalAlignment="right" VerticalAlignment="Center" Grid.Row="2" Grid.Column="0" />
<Label x:Name="_ectsSemestra" Grid.Row="2" Grid.Column="1" Content="{Binding _ectsovi, Mode=OneWay}" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid.Children>
</Grid>
</DataTemplate>
</TabControl.ItemTemplate>
</TabControl>
Doing this, for all the items in property MyTabItems, TabItems will be generated

Access and modify properties of grid row within data template

I have difficulty accessing a grid or its rows(within a ListBox), despite defining the grid's or row's name. I intend to set a new MaxHeight to one of its rows when some parameter is passed in from a SharePoint browsable property to the Silverlight control.
How may i achieve the desired effect? Binding perhaps?
# Page.xaml:
<ListBox ItemsSource="{Binding}" DataContext="" x:Name="NewsList" SelectionChanged="NewsList_SelectionChanged" SelectionMode="Single" Width="580" Height="360" VerticalAlignment="Top" HorizontalAlignment="Center" >
<ListBox.ItemTemplate>
<DataTemplate >
<Grid Height="110" Width="540" x:Name="StaffNewsBodyHeight">
<Grid Height="110" Width="540">
<Grid.RowDefinitions>
<RowDefinition Height="15" />
<RowDefinition Height="{Binding StaffNewsBodyHeight}" />
<RowDefinition Height="15" />
</Grid.RowDefinitions> <Grid.ColumnDefinitions>
<ColumnDefinition Width="82" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Border CornerRadius="2" BorderThickness="2" BorderBrush="Gray" Height="82" Width="82" Background="LemonChiffon" VerticalAlignment="Center" HorizontalAlignment="Center" Grid.RowSpan="3" Grid.Column="0" >
<Image Source="{Binding NewsThumbnail}" Style="{StaticResource ThumbNailPreview}" />
</Border>
<TextBlock x:Name="NewsTitle" FontFamily="Arial" FontWeight="bold" TextDecorations="Underline" Text="{Binding Title}" Style="{StaticResource TitleText}" Grid.Row="0" Grid.Column="1"/>
<TextBlock x:Name="NewsBody" FontFamily="Arial" Text="{Binding NewsBody}" Margin="5" Style="{StaticResource DescriptionBlock}" Grid.Row="1" Grid.Column="1" />
<StackPanel Orientation="Horizontal" Grid.Row="2" Grid.Column="1" Margin="3,3,3,3">
<TextBlock Text="Published By:" HorizontalAlignment="Left" VerticalAlignment="Bottom" Foreground="Gray" FontWeight="Bold" FontSize="9" />
<TextBlock Text="{Binding PublishedBy}" HorizontalAlignment="Left" VerticalAlignment="Bottom" Foreground="Gray" FontWeight="Bold" FontSize="9" />
<TextBlock Text="{Binding DatePublished}" HorizontalAlignment="Left" VerticalAlignment="Bottom" Foreground="Gray" FontWeight="Bold" FontSize="9" />
</StackPanel>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
# Page.xaml.cs:
if (!string.IsNullOrEmpty(_setLength))
{
StaffNews test = new StaffNews();
//assign new height to gridrow of NewsBody
if (_setLength.Contains("_3"))
test.StaffNewsBodyHeight.Equals(200);
}
I believe that StaffNews is representing one item in your list, right?
In that case, to assign a value to a property, use:
test.StaffNewsBodyHeight = 200;
to replace the last line of your snippet.
[P.S. - StaffNewsBodyHeight is a dependency property defined in StaffNews, right?]

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