In my WP8 app, i have radio button where customized it through datatemplate and embedded a textblock in it. My question is how to assign a key from my resx resource file to assign text value, so that i can localize these datatemplate control names without any issues.
Below is my sample xaml:
<TextBlock x:Name="lblTileColor" TextWrapping="Wrap" Text="{Binding LocalizedResources.Themes_Tile_label, Source={StaticResource LocalizedStrings}}" />
<RadioButton x:Name="accentColor" GroupName="tileColor" IsChecked="true">
<RadioButton.ContentTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<Rectangle Width="25" Height="25" Fill="{StaticResource PhoneAccentBrush}"/>
<TextBlock Width="10"/>
<TextBlock x:Name="lblDefaultAccent" Text="{Binding LocalizedResources.Themes_Tile_Default, Source={StaticResource LocalizedStrings}}" />
</StackPanel>
</DataTemplate>
</RadioButton.ContentTemplate>
</RadioButton>
Here i am trying to assign Themes_Tile_Default resx key to textblock named lblDefaultAccent control.
With above code i am seeing xaml error (i.e. Invalid XAML) in Datatemplate section - if i assign text value directly with hardcoding it is working...
any help to resolve this?
Related
I have a simple UWP page; there is a public ObservableCollection in the page code-behind:
public ObservableCollection<Book> MyObservableColl{ get; } = new ObservableCollection<Book>();
(note the collection consists of a single item)
I would like to bind to the collection; here is what I tried:
<StackPanel x:Name="stackPanel"
Grid.Row="2"
Margin="50"
DataContext="{x:Bind MyObservableColl, Mode=OneWay}">
<TextBox x:Name="txtTitle"
TextWrapping="Wrap"
Text="{x:Bind Title, Mode=OneWay}" />
</StackPanel>
The visual studio designer complains "the property Title was not found".
I appreciate any help to bind my text boxes to the Observable Collection.
the property Title was not found
txtTitle TextBox can't access Book item where in the MyObservableColl collection directly, you need place txtTitle under items control's ItemTemplate.
For example
<ListView ItemsSource="{x:Bind MyObservableColl, Mode=OneWay}">
<ListView.ItemTemplate>
<DataTemplate x:DataType="local:Book">
<StackPanel>
<TextBox Text="{x:Bind Title}" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
For more info please refer to listview document.
Update
For single item please refer to this xaml
<StackPanel
x:Name="stackPanel"
Grid.Row="2"
Margin="50"
DataContext="{x:Bind MyObservableColl[0], Mode=OneWay}">
<TextBox Text="{Binding Title}"/>
</StackPanel>
I have a ListView which have a DataTemplate like this:
<DataTemplate x:Key="FilterDataTemplate">
<StackPanel Orientation="Horizontal" Background="White" Height="50" HorizontalAlignment="Left">
<ComboBox x:Name="TermsItemComboBox" Width="160"
ItemsSource="{Binding ItemList}" Tag="{Binding}"
DisplayMemberPath="Key" SelectionChanged="AddTermsItem_SelectionChanged"
Background="#FFD1D1D1" SelectedItem="{Binding SelectedItem, Mode=TwoWay}" />
<TextBox x:Name="TermsInputTxt1" Text="{Binding FilterText, Mode=TwoWay}"
BorderBrush="#FF727272" Background="#FFD1D1D1" HorizontalAlignment="Left"
Width="200" FontSize="16" VerticalAlignment="Center"
Visibility="{Binding IsTxtForm, Converter={StaticResource BooleanToVisibilityConverter}}"
Height="45"/>
<TextBox x:Name="TermsInputTxt2" Text="{Binding FilterText, Mode=TwoWay}"
BorderBrush="#FF727272" Background="#FFD1D1D1" HorizontalAlignment="Left"
Width="200" FontSize="16" VerticalAlignment="Center"
Visibility="{Binding IsTxtForm, Converter={StaticResource BooleanToVisibilityConverter}}"
Height="45"/>
<Button x:Name="TrashBtn" HorizontalAlignment="Left" VerticalAlignment="Stretch"
BorderBrush="#FF575757" Foreground="#FF494949" BorderThickness="2" Tapped="TrashBtn_Tapped"
Style="{StaticResource DiscardAppBarButtonStyle}" Height="45" Width="55"
RenderTransformOrigin="0.5,0.5">
<Button.RenderTransform>
<CompositeTransform ScaleX="-1" />
</Button.RenderTransform>
</Button>
</StackPanel>
It's have a combobox and two TextBox. At default, the combobox don's show anything, just a blank item, I want when user type some text to the TermsInputTxt1 or TermsInputTxt2, the combobox will select the first item.
I try to bind the selectedindex of combobox with the lenght of those two textbox with a converter but look like XAML doesn't support multi binding like that.
Any suggest? Thank you!
So, this is a bit of a difficult situation. You have a couple of ways of going about it:
Bind the TermsInputTxt1 and TermsInputTxt2 to the ViewModel, with the Setter on the ViewModel controlling an ObservableCollection, adding and removing items as they get set in the property.
Create a Model for each entry with a Value field (string) and bind the Terms... to accessors in the ViewModel. Then, the ComboBox items will automatically change.
I suggest doing the first one. You'll have to have a SelectedItem/SelectedIndex property in the ViewModel which the ComboBox will bind to. You may also want to change the method by which the binding on the TextBoxs are updated, either so that they are updated immediately (lots of processing) or after it loses focus (less processing, but won't update the UI immediately).
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.
I am developing a windows 8 metro app in which I have listbox which contains a set of textblocks and a Image.
<ListBox x:Name="lstbxbStudents" Background="Transparent" ItemContainerStyleSelector="{StaticResource ItemStyleSelector}" ScrollViewer.VerticalScrollBarVisibility="Auto" ItemTemplate="{StaticResource LandscapeItemTemplate}" Height="476" SelectionChanged="lstbxbProducts_SelectionChanged_1" Style="{StaticResource ListBoxStyle1}" HorizontalAlignment="Left" Width="901">
</ListBox>
For that image ImgCmt I have set the source of the Image static inside the datatemplate of the listbox.
<Page.Resources>
<CollectionViewSource x:Name="cvs2" IsSourceGrouped="true" />
<!-- TODO: Delete this line if the key AppName is declared in App.xaml -->
<x:String x:Key="AppName">Students Screen</x:String>
<DataTemplate x:Key="LandscapeItemTemplate" >
<StackPanel Orientation="Horizontal">
<StackPanel Width="30"></StackPanel>
<StackPanel Width="120" Orientation="Horizontal">
<TextBlock Text="{Binding stunum}" VerticalAlignment="Center" HorizontalAlignment="Left" />
</StackPanel>
<StackPanel Width="350">
<TextBlock Text="{Binding studsc}" HorizontalAlignment="Left" />
</StackPanel>
<StackPanel Width="10"></StackPanel>
<StackPanel Width="100">
<TextBlock Text="{Binding stuum}" x:Name="txtblkstuum" HorizontalAlignment="Left" />
</StackPanel>
<StackPanel Width="150">
<TextBlock Text="{Binding stugrp}" VerticalAlignment="Center" TextAlignment="Right" HorizontalAlignment="Center" />
</StackPanel>
<StackPanel Width="100">
<TextBlock Text="{Binding stusection, Mode=TwoWay}" TextAlignment="Center" x:Name="txtbxbstusection" Tag="{Binding stunum}" VerticalAlignment="Center" HorizontalAlignment="Right" />
</StackPanel>
<StackPanel Width="50"></StackPanel>
<StackPanel>
<Image Source="Assets/comments.png" Name="ImgCmt" PointerPressed="Image_PointerPressed_1" VerticalAlignment="Center" Width="20" Height="20"></Image>
</StackPanel>
</StackPanel>
</DataTemplate>
</Page.Resources>
my objective is that I want to change the source of the image to different image source(change the image) in codebehind depnding upon some condition for that I need to access the control present inside a datatemplate of listbox in metro app ?
How can I do this :
How to access a control present inside a datatemplate of listbox in metro app?
What are the different ways in which I can do this?
How can I change the source of the image to different image source(change the image) in codebehind depending upon some condition?
This is a common question. We've all asked it at least once. The problem is that these controls don't have a unique name, because they are in a repeater. As a result, you cannot use the logical tree in XAML. The logical tree is what lets you call things by name. Instead, you need to use the visual tree in XAML. The visual tree is what lets you access everything on the screen including the dynamically rendered elements that adorn controls and populate repeaters. Because the visual tree is so big and because a repeater repeats, you still have to constrain the scope of the visual tree so you can reliably locate the control you want to find. I hope this makes sense.
Solution here: http://blog.jerrynixon.com/2012/09/how-to-access-named-control-inside-xaml.html
I am building a windows 8 metro app for fun/learning etc.
I have created a listview of text items that have descriptions, images etc. Inside the description, there are often hyperlinks that I would like to make clickable.
However, when binding to a textblock, xaml hyperlink code is displayed as text. Searching arround, it looks like I need to use a richtextblock for hyperlinks. I can't seem to figure out how to bind a hyperlink to it. I have found many examples from wpf showing how to extend the richtextblock using flowdocument. Flowdocument doesn't exist in the current consumer preview version of the framework.
I am reaching out to see if anyone has solved this issue or has any suggestions on what path to head down.
Edit:
Code I have Currently
right now I am just binding the "text" field from my Statuses Object to a textblock binding on "text"
I have URL's in the text field which I want to be able to make clickable.
As a test I was replacing the text field of the first object with hyperlink markup
ex.
feed_results[0].text = "<hyperlink .....
then trying to bind to texblock and richtextblock
Xaml
<ListView x:Name="ItemListView" ItemsSource="{Binding}" Background="Black" Width="372" VerticalAlignment="Top" Margin="50,0,0,0">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Vertical" MinHeight="100">
<StackPanel Orientation="Horizontal">
<Image Source="{Binding user.profile_image_url}" Margin="0,0,15,0" VerticalAlignment="Top" />
<StackPanel Orientation="Vertical">
<TextBlock HorizontalAlignment="Left" Foreground="Gray" Text="{Binding user.name}" FontWeight="Bold" TextWrapping="Wrap" MaxWidth="200" />
<TextBlock HorizontalAlignment="Left" Foreground="Gray" Text="{Binding text}" TextWrapping="Wrap" MaxWidth="200" />
</StackPanel>
</StackPanel>
<StackPanel Margin="0,15,0,0" HorizontalAlignment="Right">
<TextBlock Text="{Binding created_at, Converter={StaticResource StringConverter},ConverterParameter=Released: \{0:d\}}" HorizontalAlignment="Center" Foreground="Gray" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
Backend Code
FeedResult<Statuses> r2 = await feed.StatusesAsync(1, 50);
if (!r2.HasError)
{
feed_results = r2.Result;
Dispatcher.Invoke(Windows.UI.Core.CoreDispatcherPriority.High, new Windows.UI.Core.InvokedHandler((o, a) =>
{
ItemListView1.ItemsSource = feed_results;
}), this, null);
}
Microsoft removed support for inline hyperlinks from Metro XAML. You can still use HyperlinkButton for non inline hyperlinks, or if your inline hyperlinks short (1-2 words) then you could place HyperlinkButton inside of InlineUIContainer in RichTextBlock. Later solution would require some code, just using binding won't do it.