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POThis Xaml is not valid... I don't understand why
 

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  1. POThis Xaml is not valid... I don't understand why
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    <p>I've a strange problem with xaml. Visual studio for wp tell me that the xaml is not valid but when I execute the app it works fine. </p> <pre><code> &lt;phone:PhoneApplicationPage x:Class="Friends_And_Money.ContList" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone" xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:local="clr-namespace:Friends_And_Money" FontFamily="{StaticResource PhoneFontFamilyNormal}" FontSize="{StaticResource PhoneFontSizeNormal}" Foreground="{StaticResource PhoneForegroundBrush}" SupportedOrientations="Portrait" Orientation="Portrait" mc:Ignorable="d" shell:SystemTray.IsVisible="True"&gt; &lt;!--LayoutRoot è la griglia radice in cui viene inserito tutto il contenuto della pagina--&gt; &lt;phone:PhoneApplicationPage.Resources&gt; &lt;local:ContactPictureConverter x:Key="ImageConverter" /&gt; &lt;DataTemplate x:Key="AddrBookGroupHeaderTemplate"&gt; &lt;Border Background="Transparent" Padding="5"&gt; &lt;Border Background="{StaticResource PhoneAccentBrush}" BorderBrush="{StaticResource PhoneAccentBrush}" BorderThickness="2" Width="62" Height="62" Margin="0,0,18,0" HorizontalAlignment="Left"&gt; &lt;TextBlock Text="{Binding Key}" Foreground="{StaticResource PhoneForegroundBrush}" FontSize="48" Padding="6" FontFamily="{StaticResource PhoneFontFamilySemiLight}" HorizontalAlignment="Left" VerticalAlignment="Center"/&gt; &lt;/Border&gt; &lt;/Border&gt; &lt;/DataTemplate&gt; &lt;phone:JumpListItemBackgroundConverter x:Key="BackgroundConverter"/&gt; &lt;phone:JumpListItemForegroundConverter x:Key="ForegroundConverter"/&gt; &lt;Style x:Key="AddrBookJumpListStyle" TargetType="phone:LongListSelector"&gt; &lt;Setter Property="GridCellSize" Value="113,113"/&gt; &lt;Setter Property="LayoutMode" Value="Grid" /&gt; &lt;Setter Property="ItemTemplate"&gt; &lt;Setter.Value&gt; &lt;DataTemplate&gt; &lt;Border Background="{Binding Converter={StaticResource BackgroundConverter}}" Width="113" Height="113" Margin="6" &gt; &lt;TextBlock Text="{Binding Key}" FontFamily="{StaticResource PhoneFontFamilySemiBold}" FontSize="48" Padding="6" Foreground="{Binding Converter={StaticResource ForegroundConverter}}" VerticalAlignment="Center"/&gt; &lt;/Border&gt; &lt;/DataTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; &lt;DataTemplate x:Key="AddrBookItemTemplate"&gt; &lt;StackPanel VerticalAlignment="Top" Margin="0,5,0,5"&gt; &lt;Grid&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="5" &gt;&lt;/ColumnDefinition&gt; &lt;ColumnDefinition Width="auto" &gt;&lt;/ColumnDefinition&gt; &lt;ColumnDefinition Width="5" &gt;&lt;/ColumnDefinition&gt; &lt;ColumnDefinition Width="auto" &gt;&lt;/ColumnDefinition&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Image Source="{Binding Photo, Converter={StaticResource ImageConverter}}" Grid.Column="1" Width="62" Height="62" Stretch="Fill" /&gt; &lt;TextBlock Grid.Column="3" FontWeight="Light" FontSize="40" Text="{Binding FirstName}" /&gt; &lt;/Grid&gt; &lt;/StackPanel&gt; &lt;/DataTemplate&gt; &lt;/phone:PhoneApplicationPage.Resources&gt; &lt;Grid x:Name="LayoutRoot" Background="Transparent"&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="Auto"/&gt; &lt;RowDefinition Height="*"/&gt; &lt;/Grid.RowDefinitions&gt; &lt;!--TitlePanel contiene il nome dell'applicazione e il titolo della pagina--&gt; &lt;StackPanel Grid.Row="0" Margin="12,17,0,28"&gt; &lt;TextBlock Text="{Binding Path=LocalizedResources.ApplicationTitle, Source={StaticResource LocalizedStrings}}" Style="{StaticResource PhoneTextNormalStyle}" Margin="12,0"/&gt; &lt;TextBlock Text="{Binding Path=LocalizedResources.ContactTitle, Source={StaticResource LocalizedStrings}}" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/&gt; &lt;/StackPanel&gt; &lt;!--ContentPanel - inserire ulteriore contenuto qui--&gt; &lt;Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"&gt; &lt;phone:LongListSelector x:Name="LongList" Background="Transparent" GroupHeaderTemplate="{StaticResource AddrBookGroupHeaderTemplate}" ItemTemplate="{StaticResource AddrBookItemTemplate}" JumpListStyle="{StaticResource AddrBookJumpListStyle}" LayoutMode="List" IsGroupingEnabled="true" HideEmptyGroups ="true" /&gt; &lt;/Grid&gt; &lt;/Grid&gt; &lt;/phone:PhoneApplicationPage&gt; </code></pre> <p>I've followed the tutorial (with the difference of a longlistselector) from here : [http://msdn.microsoft.com/en-us/library/windowsphone/develop/hh286418(v=vs.105).aspx][1]</p> <p>How I say all works fine, longlistselector show me images and contact's name. </p> <p>Struct to show:</p> <pre><code>namespace Friends_And_Money { class ContactStruct { public string FirstName { get; set; } public WriteableBitmap Photo { get; set; } public ContactStruct(string name, WriteableBitmap photo) { this.FirstName = name; this.Photo = photo; } } } </code></pre> <p>Thanks to every one that help.</p> <p>New details: The error is signed in datatemplate AddrBookItemTemplate and I've noted that if I leave image source attribute the error disappear. So seems be something with the binding.</p>
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