Question

我有一个自定义控件，这是generic.axml代码：

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:Calendario"
    xmlns:MyNamespace="clr-namespace:Calendario;assembly=Calendario"
    xmlns:Converters="clr-namespace:Calendario.Converters">

    <Converters:DateConverter x:Key="DateConverter"></Converters:DateConverter>
    <Converters:DayBorderColorConverter x:Key="DayBorderColorConverter"></Converters:DayBorderColorConverter>

    <Style TargetType="{x:Type local:CalendarioPersonalizado}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type local:CalendarioPersonalizado}">
                    <Border Background="{TemplateBinding Background}"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}">
                        <DockPanel>
                            <TextBlock Text="{Binding Date}" />

                            <Grid Height="30" DockPanel.Dock="Top">

                            </Grid>


                            <ItemsControl ItemsSource="{Binding Days}">
                                <ItemsControl.ItemTemplate>
                                    <DataTemplate>
                                        <Border BorderBrush="{Binding ColorRecuadroExterno, Mode=TwoWay}" BorderThickness="1" Padding="0">                                         
                                        </Border>
                                    </DataTemplate>
                                </ItemsControl.ItemTemplate>
                            </ItemsControl>
                        </DockPanel>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

我的Calendario.cs带有dpendency属性：

public static readonly DependencyProperty ColorRecuadroExternoProperty = DependencyProperty.Register("ColorRecuadroExterno", typeof(Brush), typeof(CalendarioPersonalizado));
public Brush ColorRecuadroExterno
{
    get { return (Brush)GetValue(ColorRecuadroExternoProperty); }
    set { SetValue(ColorRecuadroExternoProperty, value); }
}

后来在我的主窗口中我使用了控件：

<local:CalendarioPersonalizado x:Name="cCalendario" ColorRecuadroExterno="Green"/>

问题是日历中的日期边框未设置为绿色，就像我尝试在主窗口中设置一样。

同样在代码中，我试过这个：

cCalendario.ColorRecuadroExterno = System.Windows.Media.Brushes.Green;

但是没有设置颜色。

我想要做的是从我的主应用程序中设置自定义cotrol中边框的颜色。

感谢。

Answer 1

如果您在本地：CalendarioPersonalizado类中放置一个Callback方法，并在此回调方法中设置背景。我认为它会起作用。

public static readonly DependencyProperty ColorRecuadroExternoProperty = DependencyProperty.Register("ColorRecuadroExterno", typeof(Brush), typeof(CalendarioPersonalizado),
    new PropertyMetadata(Brushes.Brown, Callback));

private static void Callback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
    CalendarioPersonalizado obj = d as CalendarioPersonalizado;
    obj.ColorRecuadroExterno.Background = (Brush)e.NewValue;
}

Answer 2

您的DependencyProperty是Brush类型。你不能隐含地转换＆＃34; Green＆＃34;到画笔。

您需要使用转换器将颜色的字符串表示形式转换为画笔，或者使属性类型为Color，并将其绑定到适当的属性。

如何从主窗口设置自定义控件的属性？

2 个答案: