I want to specify attached property for Binding.

I want to specify attached property for Binding.

• Nipam N. Patel

  It is not possible to straighten out that problem by "Grid.RowProperty.OverrideMetadata".
  Please teach the method of receiving the notification.
  
  
  

• Pavan Apuroop

  I'm not sure why that OverrideMetadata isn't working, but another thing you could try is to override the OnPropertyChanged method of Grid. In there, you can look for and handle the case where the RowProperty has changed. (Just make sure you also call base.OnPropertyChanged from your override.)

  
  

• Leonard51607

  you may have to specify xmlnamespace of also. It is not able to find 'ColorComboBox'
  
  

• Amos Soma

  try

  <SolidColorBrush Color="{Binding Path=(ColorComboBox.ItemColor), RelativeSource={RelativeSource Mode=TemplatedParent}}"/>
  

  
  
  

• Derek Smyth

  Thank you.
  It tried immediately.

  However, the exception has been generated.

  Cannot convert string '(ColorComboBox.ItemColor)' in attribute 'Path' to object of type 'System.Windows.PropertyPath'. Property path is not valid. Cannot resolve type name 'ColorComboBox'. Error at object 'System.Windows.Data.Binding'.

  By the way, I am using June CTP.

  
  
  

• progames25

  Thank you.
  It operated by specifying xmlnamespace.

  <SolidColorBrush Color="{Binding Path=(local:ColorComboBox.ItemColor), RelativeSource={RelativeSource Mode=TemplatedParent}}"/>
  

  
  
  

• The Philosiphiser

  It is not referred in the following codes though I want to relate to attached
  property with Binding.
  

  System.Windows.Data Error: 35 : BindingExpression path error: 'ColorComboBox' property not found on 'object' ''ComboBoxItem' (Name='')'. BindingExpression:Path=ColorComboBox.ItemColor; DataItem='ComboBoxItem' (Name=''); target element is 'SolidColorBrush' (HashCode=60790550); target property is 'Color' (type 'Color')
  

  public class ColorComboBox : ComboBox
  {
  public static readonly DependencyProperty ItemColorProperty =
  DependencyProperty.RegisterAttached("ItemColor", typeof(Color), typeof(ColorComboBox),
  new UIPropertyMetadata(Colors.White));
  public static Color GetItemColor(DependencyObject obj)
  {
  return (Color)obj.GetValue(ItemColorProperty);
  }

  public static void SetItemColor(DependencyObject obj, Color value)
  {
  obj.SetValue(ItemColorProperty, value);
  }
  }
  

  <Style
  x:Key="ColorComboBoxItemStyle"
  TargetType="{x:Type ComboBoxItem}">
  <Setter Property="Template">
  <Setter.Value>
  <ControlTemplate TargetType="{x:Type ComboBoxItem}">
  <Border Padding="2" BorderBrush="Pink" BorderThickness="1"
  ToolTip="{Binding Content, RelativeSource={RelativeSource Mode=TemplatedParent}}">
  <Rectangle MinWidth="8" MinHeight="8">
  <Rectangle.Fill>
  <SolidColorBrush Color="{Binding Path=ColorComboBox.ItemColor, RelativeSource={RelativeSource Mode=TemplatedParent}}"/>
  </Rectangle.Fill>
  </Rectangle>
  </Border>
  </ControlTemplate>
  </Setter.Value>
  </Setter>
  </Style>
  
  

  
  
  

• figuerres

  I want to learn the change of child's Grid.Row with MyGird.
  However, it is not possible to achieve it by the method.

  Code :
   public partial class Window1 : Window
   {

    public Window1()
    {
     InitializeComponent();
    }

    void OnBtnClick(object sender, RoutedEventArgs e)
    {
     System.Diagnostics.Debug.WriteLine( "OnBtnClick Start! ");
     UIElement dep = (UIElement)sender;
     Grid.SetColumn( dep, Grid.GetColumn(dep) + 1 );
     System.Diagnostics.Debug.WriteLine( "OnBtnClick End! ");
    }
   }

   public class MyGrid : Grid
   {
    protected override void OnPropertyChanged(System.Windows.DependencyPropertyChangedEventArgs e)
    {
     System.Diagnostics.Debug.WriteLine( "MyGrid.OnPropertyChanged : " + e.Property.ToString() );
     base.OnPropertyChanged(e);
    }
   }

   <Window x:Class="WindowsApplication3.Window1"
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
       xmlns:l="clr-namespace:WindowsApplication3"
       Title="WindowsApplication3" Height="300" Width="300"
       >
    <l:MyGrid>
     <Grid.RowDefinitions>
      <RowDefinition/>
      <RowDefinition/>
     </Grid.RowDefinitions>
     <Grid.ColumnDefinitions>
      <ColumnDefinition Width="50"/>
      <ColumnDefinition Width="50"/>
      <ColumnDefinition Width="50"/>
      <ColumnDefinition Width="50"/>
     </Grid.ColumnDefinitions>
     <Button Click="OnBtnClick" Grid.Row="0"></Button>
     <Button Click="OnBtnClick" Grid.Row="1"></Button>
    </l:MyGrid>
   </Window>
  

  Result : The change in the Grid.Column property cannot be acquired.
   OnPropertyChanged : XmlnsDictionary
   OnPropertyChanged : IWindowService
   OnPropertyChanged : Foreground
   OnPropertyChanged : XmlNamespaceMaps
   OnPropertyChanged : IsVisible
   OnPropertyChanged : ActualWidth
   OnPropertyChanged : ActualHeight
   OnPropertyChanged : ShowKeyboardCues
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsKeyboardFocusWithin
   OnPropertyChanged : IsMouseCaptureWithin
   OnPropertyChanged : IsMouseCaptureWithin
   OnBtnClick Start!
   OnBtnClick End!
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsMouseCaptureWithin
   OnPropertyChanged : IsMouseCaptureWithin
   OnBtnClick Start!
   OnBtnClick End!
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsMouseCaptureWithin
   OnPropertyChanged : IsMouseCaptureWithin
   OnBtnClick Start!
   OnBtnClick End!
   OnPropertyChanged : IsMouseOver
   OnPropertyChanged : IsVisible
   OnPropertyChanged : IsKeyboardFocusWithin
  

  
  
  
• I want to specify attached property for Binding.