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POBindingExpression path error: property not found on 'object'
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  1. POBindingExpression path error: property not found on 'object'
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    copied!<p>I've been searching for hours on this error that appears in the output window. I'm pretty new to bindings in WPF, so I'm sure there's something I'm missing.</p> <p>Full text of the error (there is one for each binding path, all similar to this one):</p> <blockquote> <p>System.Windows.Data Error: 39 : BindingExpression path error: 'TestItem' property not found on 'object' ''String' (HashCode=-842352750)'. BindingExpression:Path=TestItem; DataItem='String' (HashCode=-842352750); target element is 'TextBlock' (Name=''); target property is 'Text' (type 'String')</p> </blockquote> <p><strong>EDIT:</strong> Everything seems to work as it should, but I get these errors in the output window.</p> <p>XAML:</p> <pre><code>&lt;UserControl&gt; &lt;UserControl.Resources&gt; &lt;c:MyData x:Key="myDataSource"/&gt; &lt;DataTemplate x:Key="image"&gt; &lt;Image x:Name="TheImage" /&gt; &lt;DataTemplate.Triggers&gt; &lt;DataTrigger Binding="{Binding Path=PassFail}" Value="PASS"&gt; &lt;Setter TargetName="TheImage" Property="Source" Value="Images/accept.png" /&gt; &lt;/DataTrigger&gt; &lt;DataTrigger Binding="{Binding Path=PassFail}" Value="FAIL"&gt; &lt;Setter TargetName="TheImage" Property="Source" Value="Images/delete.png" /&gt; &lt;/DataTrigger&gt; &lt;DataTrigger Binding="{Binding Path=PassFail}" Value="WARNING"&gt; &lt;Setter TargetName="TheImage" Property="Source" Value="Images/warning.png" /&gt; &lt;/DataTrigger&gt; &lt;/DataTemplate.Triggers&gt; &lt;/DataTemplate&gt; &lt;Storyboard x:Key="OnMouseLeftButtonDown1"/&gt; &lt;/UserControl.Resources&gt; &lt;UserControl.DataContext&gt; &lt;Binding Source="{StaticResource myDataSource}"/&gt; &lt;/UserControl.DataContext&gt; &lt;ListView Margin="0,94,-4,-7" x:Name="lsvwOutput" ItemsSource="{Binding Source={StaticResource myDataSource}}" MouseUp="lsvwOutput_MouseUp" FontFamily="Verdana"&gt; &lt;ListView.View&gt; &lt;GridView&gt; &lt;GridViewColumn Header="Test Item" Width="300" DisplayMemberBinding="{Binding Path=TestItem}" /&gt; &lt;GridViewColumn Header="Information" Width="0" DisplayMemberBinding="{Binding Path=Information}"/&gt; &lt;GridViewColumn Header="Result" Width="0" DisplayMemberBinding="{Binding Path=PassFail}"/&gt; &lt;GridViewColumn Header="Result" CellTemplate="{StaticResource image}" /&gt; &lt;/GridView&gt; &lt;/ListView.View&gt; &lt;/ListView &lt;/UserControl&gt; </code></pre> <p>Code behind:</p> <pre><code>public class MyData : INotifyPropertyChanged { private string _testitem = ""; private string _information = ""; private string _passfail = ""; public string TestItem { get { return _testitem; } set { _testitem = value; OnPropertyChanged("TestItem"); } } public string Information { get { return _information; } set { _information = value; OnPropertyChanged("Information"); } } public string PassFail { get { return _passfail; } set { _passfail = value; OnPropertyChanged("PassFail"); } } public string Text { get; set; } </code></pre>
 

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