Below is my DataGrid with some attached properties that are associated with the popup controls further down. The ComboBox is populated by an enum.
<DataGrid Name="GenericDataGrid"
helpers:SearchBehaviours.SearchValue="{Binding ElementName=FindTextbox, Path=Text, UpdateSourceTrigger=PropertyChanged}"
helpers:SearchBehaviours.IsFindPopupOpen="{Binding ElementName=PopupFind, Path=IsOpen, UpdateSourceTrigger=PropertyChanged}"
helpers:SearchBehaviours.SearchableItems="{Binding ElementName=ComboSearchableItems, Path=SelectedValue, UpdateSourceTrigger=PropertyChanged}" >
</DataGrid>
<Popup x:Name="PopupFind">
<TextBox x:Name="FindTextbox" />
<ComboBox x:Name="ComboSearchableItems"
ItemsSource="{Binding Source={helpers:Enumeration {x:Type helpers:SearchItems}}}"
DisplayMemberPath="Description"
SelectedValue="{x:Static helpers:SearchItems.AllItems}"
SelectedValuePath="Value" />
</Popup>
Here is the class that handles the behaviors:
class SearchBehaviours
{
// Using a DependencyProperty as the backing store for IsTextMatch. This enables animation, styling, binding, etc...
public static readonly DependencyProperty IsTextMatchProperty =
DependencyProperty.RegisterAttached("IsTextMatch", typeof(bool), typeof(SearchBehaviours), new UIPropertyMetadata(false));
public static bool GetIsTextMatch(DependencyObject obj)
{
return (bool)obj.GetValue(IsTextMatchProperty);
}
public static void SetIsTextMatch(DependencyObject obj, bool value)
{
obj.SetValue(IsTextMatchProperty, value);
}
public static readonly DependencyProperty SearchValueProperty =
DependencyProperty.RegisterAttached("SearchValue", typeof(string), typeof(SearchBehaviours), new FrameworkPropertyMetadata(string.Empty, FrameworkPropertyMetadataOptions.Inherits));
public static string GetSearchValue(DependencyObject obj)
{
return (string)obj.GetValue(SearchValueProperty);
}
public static void SetSearchValue(DependencyObject obj, string value)
{
obj.SetValue(SearchValueProperty, value);
}
public static readonly DependencyProperty IsFindPopupOpenProperty =
DependencyProperty.RegisterAttached("IsFindPopupOpen", typeof(bool), typeof(SearchBehaviours),
new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.Inherits));
public static bool GetIsFindPopupOpen(DependencyObject obj)
{
return (bool)obj.GetValue(IsFindPopupOpenProperty);
}
public static void SetIsFindPopupOpen(DependencyObject obj, bool value)
{
obj.SetValue(IsFindPopupOpenProperty, value);
}
public static readonly DependencyProperty SearchableItemsProperty =
DependencyProperty.RegisterAttached("SearchableItems", typeof(SearchItems), typeof(SearchBehaviours), new PropertyMetadata(SearchItems.AllItems));
public static SearchItems GetSearchableItems(DependencyObject obj)
{
return (SearchItems)obj.GetValue(SearchableItemsProperty);
}
public static void SetSearchableItems(DependencyObject obj, SearchItems value)
{
obj.SetValue(SearchableItemsProperty, value);
}
}
The issue is in the following IMultiValueConverter
<Style TargetType="{x:Type DataGridCell}" x:Key="textCellStyle" >
<Setter Property="helpers:SearchBehaviours.IsTextMatch">
<Setter.Value>
<MultiBinding Converter="{StaticResource SearchValueConverter}" FallbackValue="False">
<Binding Path="Content.Text" RelativeSource="{RelativeSource Self}" />
<Binding Path="(helpers:SearchBehaviours.SearchValue)" RelativeSource="{RelativeSource Self}" />
<Binding Path="(helpers:SearchBehaviours.IsFindPopupOpen)" RelativeSource="{RelativeSource Self}"/>
<Binding Path="(helpers:SearchBehaviours.SearchableItems)" RelativeSource="{RelativeSource Self}"/>
<Binding />
<Binding RelativeSource="{x:Static RelativeSource.Self}"/>
</MultiBinding>
</Setter.Value>
</Setter>
<Style.Triggers>
<Trigger Property="helpers:SearchBehaviours.IsTextMatch" Value="True">
<Setter Property="Background" Value="DarkOrange" />
<Setter Property="Foreground" Value="White"/>
</Trigger>
</Style.Triggers>
</Style>
It triggers the IMultiValueConverter up when the popup is open and closed.
It triggers when the textbox text is changed.
However if the SelectedValue changes in the ComboBox it does not trigger.
Below is the converter it is pretty simple at present outputing when triggered.
public class SearchValueConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
Console.WriteLine("Triggered");
return false;
}
public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
{
return null;
}
}
[EDIT]
public enum SearchItems
{
[Description("All Items")]
AllItems,
[Description("Selected Items")]
SelectedItems
}
[END EDIT]
Can someone what the issue is?
