XAML binding to an object

BindingOutputError.txt

A breakpoint in my Value Converter is never hit. Here's an excerpt of my Output window:

System.Windows.Data Warning: 68 : BindingExpression (hash=22895473): Found data context element: Image (hash=23663325) (OK)
System.Windows.Data Warning: 76 : BindingExpression (hash=22895473): Activate with root item OperatingRoomCase (hash=12289189)
System.Windows.Data Error: 40 : BindingExpression path error: '' property not found on 'current item of collection' ''OperatingRoomCase' (HashCode=12289189)'. BindingExpression:Path=/; DataItem='OperatingRoomCase' (HashCode=12289189); target element is 'Image' (Name=''); target property is 'Source' (type 'ImageSource')
System.Windows.Data Warning: 78 : BindingExpression (hash=22895473): TransferValue - got raw value {DependencyProperty.UnsetValue}
System.Windows.Data Warning: 86 : BindingExpression (hash=22895473): TransferValue - using fallback/default value <null>
System.Windows.Data Warning: 87 : BindingExpression (hash=22895473): TransferValue - using final value <null>

DataGridOfOperatingRoomCases.xaml

<!-- For the grid (deleted irrelevant properties; temporarily have tracelevel set to high.) -->
<!-- I'm binding to "/" in an attempt to say "the current object, the whole thing." -->

<DataGrid x:Name="boardViewDataGrid" CanUserAddRows="False" AutoGenerateColumns="False" ItemsSource="{Binding}">
  <DataGrid.Columns>
    <DataGridTemplateColumn Header="STATUS">
      <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
          <Button Click="AdvanceStatusButton_Click" Background="{x:Null}" BorderBrush="{x:Null}">
            <Image Source="{Binding /, Converter={StaticResource statusImageConverter}, diagnostics:PresentationTraceSources.TraceLevel=High}" />
          </Button>
        </DataTemplate>
      </DataGridTemplateColumn.CellTemplate>
    </DataGridTemplateColumn>
    <!-- ... -->
  </DataGrid.Columns>
</DataGrid>

OperatingRoomCaseToImagePathConverter.cs

public class OperatingRoomCaseToImagePathConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var operatingRoomCase = value as OperatingRoomCase;
        if (operatingRoomCase != null)
        {
            if (operatingRoomCase.IsCanceled && operatingRoomCase.CurrentStatus != OperatingRoomCaseStatus.Archived)
            {
                return "Images\\ex.png";
            }
            switch (operatingRoomCase.CurrentStatus)
            {
                case OperatingRoomCaseStatus.Scheduled:
                    return "Images\\opencircle.png";
                case OperatingRoomCaseStatus.Ready:
                    return "Images\\minus.png";
                case OperatingRoomCaseStatus.Started:
                    return "Images\\rightarrow.png";
                case OperatingRoomCaseStatus.Completed:
                    return "Images\\check.png";
                case OperatingRoomCaseStatus.Archived:
                    return "Images\\downarrowline.png";
                default:
                    return string.Empty;
            }
        }
        return string.Empty;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotImplementedException();
    }
}

ValueConverterResource.xaml

<!-- At the top of that xaml file -->

<Page.Resources>
  <UI:OperatingRoomCaseToImagePathConverter x:Key="statusImageConverter" />
  <!-- ... -->
</Page.Resources>