我收到以下错误:
System.Windows.Data 错误:2:找不到目标元素的管理 FrameworkElement 或 FrameworkContentElement。绑定表达式:路径=图像路径;数据项=空;目标元素是“VisualBrush”(HashCode=52892165);目标属性是“视觉”(类型“视觉”)
我正在尝试为我的(Named SearchTextBox) 属性设置一个Canvas
类型,以便控件显示它。这包装了图标的路径。当我尝试运行它时,我看不到图标,我得到:MainWindow
WPF Control
ImagePath
Canvas
System.Windows.Data 错误:2。
这是我的代码:
我的 WPF 控件:
搜索文本框.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); }
}
通用的.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>
我的观点:
<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>
有任何想法吗?提前致谢。