C# WPF 矩形填充绑定
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C# WPF Rectangle Fill Binding
提问by Jaroslaw Matlak
I need to bind color to fill the rectangle.
我需要绑定颜色来填充矩形。
XAML:
XAML：
<Rectangle Fill="{Binding Colorr}"
VerticalAlignment="Center"
Height="3" Width="16"
Margin="3, 1, 5, 0"
Visibility="Visible"/>
ViewModel:
视图模型：
public ItemViewModel()
{
Colorr = Colors.Red;;
}
public Color Colorr
{
get {
return color; }
set
{
color = value;
NotifyOfPropertyChange(() => Colorr);
}
}
The resulting rectangle is not visible (or is transparent - it's hard to say...) instead of being visible and red. How can I get rid of this problem?
生成的矩形不可见（或者是透明的 - 很难说......）而不是可见和红色。我怎样才能摆脱这个问题？
回答by 15ee8f99-57ff-4f92-890c-b56153
Rectangle.Fill(which it inherits from Shape) is a Brush, not a Color. So make your property a Brushinstead:
Rectangle.Fill（它继承自Shape）是一个Brush，而不是一个Color。因此，将您的财产Brush改为：
private Brush _colorr = Brushes.Red;
public Brush Colorr
{
get
{
return _colorr;
}
set
{
_colorr = value;
NotifyOfPropertyChange(() => Colorr);
}
}
There may be other problems, but you need to fix this one first.
可能还有其他问题，但您需要先解决这个问题。
回答by Vidas Vasiliauskas
The other way around is to use ColorToBrushConverter, just like the one below:
另一种方法是使用ColorToBrushConverter，就像下面的那样：
using System.Windows.Data;
using System.Windows.Media;
public class ColorToBrushConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return new SolidColorBrush((Color)value);
}
public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
return (value as SolidColorBrush).Color;
}
}
Then in XAML define the converter as resource and use it like this:
然后在 XAML 中将转换器定义为资源并像这样使用它：
<Rectangle Fill="{Binding Colorr, Converter={StaticResource ColorToBrushConverter}}"/>
