In my windows phone application, I made a user control that has some text blocks and images. It's something like a control to show posts like Facebook. I want to use this user control in a long list selector, but whenever I try to bind data to it I get no data. Please help me. This is the MainPage.xaml
<Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">
<phone:LongListSelector Name="myLLS">
<phone:LongListSelector.ItemTemplate>
<DataTemplate>
<local:Posts TitleText={Binding TitleText}>
</local:Posts>
</DataTemplate>
</phone:LongListSelector.ItemTemplate>
</phone:LongListSelector>
</Grid>
And this is the code behind
public class TestData
{
private string _TitleText;
public string TitleText
{
get { return _TitleText; }
set { _TitleText = value; }
}
public TestData(string Text)
{
This.TitleText = Text;
}
}
And this is the UserControl xaml code
<UserControl x:Class="BindingUserControlTest.TestBind"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}" Height="125.889" Width="227.974">
<Grid x:Name="LayoutRoot" Background="{StaticResource PhoneChromeBrush}">
<TextBlock x:Name="lblTitle" HorizontalAlignment="Left" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top"/>
<TextBlock x:Name="lblDescription" HorizontalAlignment="Left" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top" Margin="0,32,0,0" Width="218" Height="84"/>
</Grid>
And this is the code behind :
private string _ShownTitle;
public string ShownTitle { get { return _ShownTitle; } set { _ShownTitle = value; }}
You need to use DependencyProperties to be able to bind to an attribute. Rather than re-write the code for you, I will give you a link to a blog by Jerry Nixon, who explains the process well.
http://blog.jerrynixon.com/2013/07/solved-two-way-binding-inside-user.html
EDIT:
Code Behind for the Usercontrol would look like.
public sealed partial class ExampleControl : UserControl
{
public static readonly DependencyProperty exampleProperty = DependencyProperty.Register("ExampleData", typeof(Double), typeof(NutritionLabelControl), null);
public ExampleControl()
{
InitializeComponent();
(this.Content as FrameworkElement).DataContext = this;
}
public Double ExampleData
{
get { return (Double)GetValue(exampleProperty); }
set
{
SetValue(exampleProperty, value);
}
}
}
Then in your userControls XAML you would have something like:
<UserControl>
<Grid x:Name="LayoutRoot">
<TextBlock Text="{Binding ExampleData}" />
</Grid>
</UserControl>
You can then use the same Binding format in the MainPage.xaml as in the usercontrols XAML.
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