I have this DataTemplate in style. I have two properties for Image's Source (Image and ImageHover). Now its Image. So I want to change it to ImageHover when the List item from the List Box is hovered by the mouse. How can I make this kind of Binding - Binding in trigger, to change another control's property ?
<DataTemplate x:Key="MetroListBoxItemTemplate">
<Grid Name="grid_menu">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="40"/>
<ColumnDefinition Width="110"/>
</Grid.ColumnDefinitions>
<Image Name="menu_image" Source="{Binding Image}" Stretch="Uniform" Width="40" Height="40" >
</Image>
<StackPanel Grid.Column="1" Margin="5">
<TextBlock Text="{Binding Path=Title, FallbackValue=Title}" FontFamily="Segoe UI Light" FontSize="20"
Foreground="{Binding RelativeSource={RelativeSource AncestorType=ListBoxItem, Mode=FindAncestor}, Path=Foreground}" />
</StackPanel>
</Grid>
</DataTemplate>
I use the template here
<ListBox
x:Name="main_menu" HorizontalAlignment="Left" Margin="8,8,0,8" Width="160"
ItemTemplate="{DynamicResource MetroListBoxItemTemplate}"
ItemContainerStyle="{DynamicResource MetroListBoxItemStyle}"
ItemsSource="{Binding Menu}">
</ListBox>
Related
I created user control with the textblock. But it will not wrap. This user control servers as a listboxitem.
<Grid x:Name="MainGrid" Height="Auto" Width="Auto">
<StackPanel Orientation="Horizontal">
<Image Height="50" Width="100" Stretch="Uniform" Name="image1" Source="{Binding Path=VideoImageUrl}" Margin="12,12,13,84" MouseLeftButtonDown="image1_MouseLeftButtonDown" MouseEnter="image1_MouseEnter" MouseLeave="image1_MouseLeave" />
<StackPanel Orientation="Vertical" >
<TextBlock TextWrapping="Wrap" Height="Auto" HorizontalAlignment="Left" Name="titleTextBox"
Text="{Binding Path=Title, Mode=TwoWay, ValidatesOnExceptions=true, NotifyOnValidationError=true}"
VerticalAlignment="Center" Width="Auto" FontSize="14" FontWeight="SemiBold" />
<StackPanel Orientation="Vertical" x:Name="StackPanelDetails">
<TextBlock Height="Auto" HorizontalAlignment="Left" Name="desciptionTextBox"
TextWrapping="Wrap"
Text="{Binding Path=Desciption, Mode=OneWay, ValidatesOnExceptions=true, NotifyOnValidationError=true}"
VerticalAlignment="Center" Width="Auto" />
<Line />
<ItemsControl x:Name="CustomItemsSource" ItemsSource="{Binding Path=LinksList}" >
<ItemsControl.ItemTemplate>
<DataTemplate>
<TextBlock>
<Hyperlink NavigateUri="{Binding Path=TopicUrl}" RequestNavigate="Hyperlink_RequestNavigate" >
<TextBlock Text="{Binding Path=TopicName}" />
</Hyperlink>
</TextBlock>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</StackPanel>
</StackPanel>
</StackPanel>
</Grid>
A ListBox's default template does not automatically limit the width of its items, but instead uses a ScrollViewer, which shows a horizontal scrollbar when an item is wider than the ListBox.
You can remove the ScrollViewer by replacing the ListBox's Template:
<ListBox ...>
<ListBox.Template>
<ControlTemplate>
<StackPanel IsItemsHost="True"/>
</ControlTemplate>
</ListBox.Template>
...
</ListBox>
Another important thing to note is that a StackPanel in the top-level Grid won't properly resize the contained elements. In the following simplified example the text in the TextBlock is not wrapped because the containing StackPanel simply does not resize it as you expect:
<Grid>
<StackPanel Orientation="Horizontal">
<Image ... />
<Text TextWrapping="Wrap" Text=... />
</StackPanel>
</Grid>
This way it works as you expect:
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Image ... />
<TextBlock Grid.Column="1" TextWrapping="Wrap" Text=... />
</Grid>
I'm attempting to bind the Visibility property of a TextBlock that's held within the ItemTemplate for a ListView to the IsSelected property of the TextBlock's parent ListViewItem.
With this markup, the TextBlock is always visible.
<ListView x:Name="ItemListView" ItemsSource="{Binding Path=Accounts}" Margin="60,0,0,10" Grid.Row="1" Grid.Column="0">
<ListView.ItemTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100">
</ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="200"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Image Width="100" Height="100" Grid.Column="0"></Image>
<StackPanel Grid.Column="1">
<TextBlock Text="{Binding Path=Account.Name}"
FontSize="24" Margin="5,0,0,0" TextWrapping="Wrap" />
</StackPanel>
<TextBlock Grid.Column="3" VerticalAlignment="Bottom"
Visibility="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=IsSelected, Converter={StaticResource boolConverter}, Mode=OneWay}">
Show More Details...
</TextBlock>
</Grid>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Notes:
1. In case it makes any difference, this is WinRT; a Metro app written in C#.
2. boolConverter is a fairly standard converter appears to work correctly.
Use Mode=FindAncestor:
<TextBlock Grid.Column="3" VerticalAlignment="Bottom"
Visibility="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ListViewItem}, Path=IsSelected, Converter={StaticResource boolConverter}, Mode=OneWay}">
I think that in this case you will have to use ElementName=ItemListView
#Murven 's answer was close. This is what worked for me:
<TextBlock Visibility="{Binding DataContext.IsSelected, ElementName=ItemListView Converter={StaticResource boolConverter}, Mode=OneWay}">
I had to use DataContext.IsSelected to access the context of the ItemListView.
Not sure if there is a better way.
I have created one datatemplate resouce in my xaml file
<navigation:Page.Resources>
<DataTemplate x:Key="PageFooter" >
<StackPanel Width="{Binding Path=UsablePageWidth, Mode=OneWay}" Height="Auto" x:Name="spFooter" HorizontalAlignment="Center">
<TextBlock x:Name="txtParameter" FontSize="16" Text="{Binding}"
FontWeight="Bold" Foreground="White"
HorizontalContentAlignment="Center"
Width="{Binding Path=UsablePageWidth, Mode=OneWay}"
Background="Black" Height="35" />
</StackPanel>
</DataTemplate>
</navigation:Page.Resources>
Now in my code behind i want to update this Textblock with my database value
How to do this? I am new in silverlight
I am using a ListBox control in a Windows Phone 7 application, and I would like to show a divider/line between the list rows.
I have not been able to find any information about this, although many (not wp7) ListBox examples seem to have a divider.
Got inspired by NestorArturo and found out about the Border control.
It is very easy to wrap your ItemTemplate content in a Border control and specify the BorderThickness and BorderBrush. I went this way, because it doesn't require changes to my Grid in the ItemTemplate.
The Border control is described here: http://www.silverlightshow.net/items/Using-the-Border-control-in-Silverlight-2-Beta-1-.aspx.
Below you can see how I use it:
<ListBox Background="White" ItemsSource="{Binding Mode=OneWay, Path=MyPath}" Name="listName" SelectionChanged="listName_SelectionChanged">
<ListBox.ItemContainerStyle>
<Style TargetType="ListBoxItem">
<Setter Property="HorizontalContentAlignment" Value="Stretch"></Setter>
</Style>
</ListBox.ItemContainerStyle>
<ListBox.ItemTemplate>
<DataTemplate>
here --> <Border BorderThickness="0,10,0,10" BorderBrush="Black">
<Grid Width="auto" HorizontalAlignment="Stretch" >
<Grid.ColumnDefinitions>
<ColumnDefinition Width="auto" />
<ColumnDefinition Width="*" />
<ColumnDefinition Width="48" />
</Grid.ColumnDefinitions>
<TextBlock VerticalAlignment="Center" FontSize="36" FontWeight="Bold" Grid.Column="0" Foreground="Black" Text="{Binding Path=Title}" Name="title"/>
<TextBlock VerticalAlignment="Center" HorizontalAlignment="Right" Grid.Column="1" Foreground="Black" Text="{Binding Path=Location}" Name="location"/>
<Image VerticalAlignment="Center" Grid.Column="2" Width="48" Height="48" Source="ApplicationIcon.jpg"/>
</Grid>
and here --> </Border>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
You can either change the ListBoxItem template, or, an easier approach is to change your ItemTemplate, You can simply add a divider within your ItemTemplate as follows:
<ListBox.ItemTemplate>
<DataTemplate>
<Grid>
<!-- your content goes here ... for example: -->
<TextBlock Text={Binding Path=InterestingThing}"/>
<!-- the divider -->
<Line X1="0" X2="200" Y1="0" Y2="0"
VerticalAlignment="Bottom"/>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
I have listbox that displays information about list of objects:
<ListBox Grid.Column="0" Height="152" Name="CustomersList" HorizontalAlignment="Stretch">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Name, Mode=OneWay}"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
I would show more detailed information about selected item in another block, but I don't know (and can't find) how to bind selected item to those block data context. I guess it should be something like this:
<Grid Grid.Column="1" DataContext="{Binding Path=ItemSelected, UpdateSourceTrigger=PropertyChanged}" VerticalAlignment="Top">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150"/>
<ColumnDefinition Width="250"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Grid.Row="0" Grid.Column="0" Text="Id" VerticalAlignment="Center" />
<TextBox Grid.Row="0" Grid.Column="1" Text="{Binding Path=Id}" VerticalAlignment="Center"/>
<TextBlock Grid.Row="1" Grid.Column="0" Text="Name" VerticalAlignment="Center"/>
<TextBox Grid.Row="1" Grid.Column="1" Text="{Binding Path=Name}" VerticalAlignment="Center"/>
<StackPanel Grid.Row="2" Grid.ColumnSpan="2" Orientation="Horizontal" HorizontalAlignment="Center">
<Button Content="Add new" />
<Button Content="Store changes" />
</StackPanel>
</Grid>
But the problem is that data item to be binded to the grid is not specified anywhere and I don't know how to do that.
Any suggestion would be wellcome.
Thanks!
P.S. I've tried to specify CustomersList.ItemsSource as DataContext for the Grid - this didn't give any result.
You can bind to the SelectedItem property of the ListBox, one way is using ElementName.
<Grid DataContext="{Binding ElementName=CustomersList, Path=SelectedItem}"> </Grid>