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我創造了這個控制WPF
:自定義擴展的控制並沒有呈現
[ContentProperty("Text")]
[DefaultProperty("Text")]
public class TextElement : Control {
public static readonly DependencyProperty TextProperty =
DependencyProperty.Register("Text", typeof(string),
typeof(TextElement), new PropertyMetadata(default(string)));
public static readonly DependencyProperty LabelProperty =
DependencyProperty.Register("Label", typeof(string),
typeof(TextElement), new PropertyMetadata(default(string)));
[Bindable(true)]
public string Text {
get { return (string)GetValue(TextProperty); }
set { SetValue(TextProperty, value); }
}
[Bindable(true)]
public string Label {
get { return (string)GetValue(LabelProperty); }
set { SetValue(LabelProperty, value); }
}
}
另外,我在項目定義的控件的默認模板中/Themes/Generic.xaml
:
<Style x:Key="{x:Type local:TextElement}" TargetType="{x:Type local:TextElement}">
<Setter Property="SnapsToDevicePixels" Value="True"/>
<Setter Property="HorizontalAlignment" Value="Stretch" />
<Setter Property="HorizontalContentAlignment" Value="Left"/>
<Setter Property="VerticalAlignment" Value="Stretch" />
<Setter Property="VerticalContentAlignment" Value="Top" />
<Setter Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrush}}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrush}}"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:TextElement}">
<Grid HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Background="Yellow"
Width="100" Height="30">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="55"/>
<ColumnDefinition Width="66"/>
</Grid.ColumnDefinitions>
<Label Grid.Column="0" x:Name="label" Background="Red" Height="20" Width="20"
HorizontalAlignment="Stretch"
HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="Stretch"
VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
Content="{TemplateBinding Label}"
Style="{TemplateBinding LabelStyle}"/>
<ContentPresenter />
<TextBlock Text="{TemplateBinding Text}"/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
但是,當我使用它在一個視圖中,沒有顯示。我錯在哪裏?請任何想法嗎?
謝謝,我也發現了這個問題:D。但是要說謝謝,我會接受並投票回答你的答案。乾杯 –