Im getting the following error:
System.Windows.Data Error: 2 : Cannot find governing FrameworkElement or
FrameworkContentElement for target element. BindingExpression:Path=ImagePath;
DataItem=null; target element is 'VisualBrush' (HashCode=52892165); target
property is 'Visual' (type 'Visual')
I'm trying to set a Canvas
type from MainWindow
to my WPF Control
(Named SearchTextBox) property ImagePath
, so the control show it. This Canvas
wraps the path of an icon. When i try and run it i cant see the icon and i get the:
System.Windows.Data Error: 2.
This is my code:
My WPF Control:
SearchTextBox.cs:
public static readonly DependencyProperty ImagePathProperty =
DependencyProperty.Register(
"ImagePath",
typeof(Canvas),
typeof(SearchTextBox));
public Canvas ImagePath
{
get { return (Canvas)GetValue(ImagePathProperty); }
set { SetValue(ImagePathProperty, value); }
}
Generic.xaml
<Border x:Name="PART_SearchIconBorder"
Grid.Column="2"
VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
BorderBrush="{StaticResource SearchTextBox_SearchIconBorder}">
<Rectangle
Width="15"
Height="15">
<Rectangle.Fill>
<VisualBrush Stretch="Fill"
Visual="{Binding ImagePath}" />
</Rectangle.Fill>
</Rectangle>
My View:
<Controls:MetroWindow x:Class="TestUI.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:l="clr-namespace:UIControls;assembly=SearchTextBox"
xmlns:Controls="clr-namespace:MahApps.Metro.Controls;assembly=MahApps.Metro"
Title="Window1" Height="423" Width="487">
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="/Resources/Icons.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Colours.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Fonts.xaml" />
<ResourceDictionary Source="pack://application:,,,/MahApps.Metro;component/Styles/Controls.xaml" />
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>
<Grid> //----appbar_add is the canvas
<l:SearchTextBox ImagePath="{StaticResource appbar_add}" Height="39" Margin="118,52,116,0" VerticalAlignment="Top" Name="m_txtTest" />
<TextBox Margin="118,0,116,68" Name="m_txtSearchContent" Height="65" VerticalAlignment="Bottom" />
<TextBlock HorizontalAlignment="Left" Margin="118,0,0,139" Width="107" Text="Search content" FontSize="14" Height="20" VerticalAlignment="Bottom" />
</Grid>
Any ideas? Thanks in advance.
Best Answer
I'm assuming the content in Generic.xaml is part of the
ControlTemplate
for theSearchTextBox
class. Since it's a control template, you need to useTemplateBinding
to bind to the properties of the control that the template is applied to. So, change:to