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POBinding ObservableCollection to child window, design mode works, real data does not
 

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  1. POBinding ObservableCollection to child window, design mode works, real data does not
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    <p>I have the following code where the design mode works, but as soon I run it with real equal data the window just Shows the Default class Name <strong>DocumentViewer.ViewModel.ItemSelectorViewModel</strong> and nothing else (not unlike in design mode). I simply can't see the Problem.</p> <h2>ViewModel</h2> <pre><code>public class ItemSelectorViewModel : ViewModelBase { private ObservableCollection&lt;Document&gt; _pictureSelectors; public ItemSelectorViewModel() { if (Designer.IsInDesignMode()) { string xml = System.IO.File.ReadAllText(GlobalConstants.DesignTimeDataFile); IList&lt;Document&gt; list = ObjectSerializer.Deserialize&lt;List&lt;Document&gt;&gt;(xml); PictureSelector = list.ToObservableCollection(); } } public ObservableCollection&lt;Document&gt; PictureSelector { get { return _pictureSelectors; } set { if (_pictureSelectors == value) { return; } _pictureSelectors = value; RaisePropertyChanged("PictureSelector"); } } } </code></pre> <h2>View</h2> <pre><code>public partial class ItemSelectorView { public ItemSelectorView(ItemSelectorViewModel itemSelectorViewModel) { InitializeComponent(); if (!Designer.IsInDesignMode()) { Content = itemSelectorViewModel; } } } </code></pre> <h2>XAML</h2> <pre><code>&lt;Window x:Class="DocumentViewer.View.ItemSelectorView" 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" xmlns:viewModel="clr-namespace:DocumentViewer.ViewModel" Title="ItemSelector" Width="300" Height="321" WindowStyle="SingleBorderWindow" d:DataContext="{d:DesignInstance Type=viewModel:ItemSelectorViewModel, IsDesignTimeCreatable=True}" mc:Ignorable="d"&gt; &lt;Window.Resources /&gt; &lt;Grid x:Name="MyLayoutRoot" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition Width="20*" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;DataGrid x:Name="MyDataGrid" Width="Auto" Height="Auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" AutoGenerateColumns="False" CanUserAddRows="False" ItemsSource="{Binding Path=PictureSelector}" SelectedCellsChanged="Item_SelectionChanged" SelectedValuePath="DocId" SelectionUnit="FullRow"&gt; &lt;DataGrid.Columns&gt; &lt;DataGridTextColumn Binding="{Binding DocNumber}" Header="Tagesnummer" /&gt; &lt;DataGridTextColumn Binding="{Binding GraphicType}" Header="Grafiktyp" /&gt; &lt;DataGridTextColumn Binding="{Binding DocId}" Header="Doc ID" /&gt; &lt;/DataGrid.Columns&gt; &lt;DataGrid.ColumnHeaderStyle&gt; &lt;Style TargetType="{x:Type DataGridColumnHeader}"&gt; &lt;Setter Property="FontWeight" Value="Bold" /&gt; &lt;/Style&gt; &lt;/DataGrid.ColumnHeaderStyle&gt; &lt;/DataGrid&gt; &lt;/Grid&gt; </code></pre> <p></p> <h2>And I call the child from the parent with a RelayCommand</h2> <pre><code>ItemSelectorViewModel viewModel = new ItemSelectorViewModel(); viewModel.PictureSelector = _dataModel.DokumenteItems; ItemSelectorView view = new ItemSelectorView(viewModel); view.Owner = Application.Current.MainWindow; view.Show(); </code></pre>
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