将SolidColorBrush绑定到ControlTemplate背景
将SolidColorBrush绑定到ControlTemplate背景
提问于 2016-01-20 08:41:41
嗨，我试图将SolidColorBrush绑定到TabItem控制模板中边框的背景属性。但是当im更改SolidColorBrush资源的值时，它说“不能在对象‘# of 808080’上设置一个属性，因为它处于只读状态。”就像没有ControlTemplate的股票按钮一样，它的工作也很完美。
这是我的密码。(XAML)
<Window.Resources>
<SolidColorBrush x:Key="SolidColorBrush2" Color="Gray"/>
<SolidColorBrush x:Key="SolidColorBrush3" Color="Black"/>
<Style x:Key="TabItemTemplate" TargetType="TabItem">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TabItem">
<Border Name="Tab" Height="30" Padding="10 0" Margin="0 0 10 0">
<TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="White">
<ContentPresenter x:Name="TabItemContent" HorizontalAlignment="Center" VerticalAlignment="Center" ContentSource="Header"></ContentPresenter>
</TextBlock>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter TargetName="Tab" Property="Background" Value="{DynamicResource SolidColorBrush3}"/>
</Trigger>
<Trigger Property="IsSelected" Value="False">
<Setter TargetName="Tab" Property="Background" Value="{DynamicResource SolidColorBrush2}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TabControl Name="TabControlRepaymentWorkflowInner" Grid.Row="0">
<TabItem Header="ABC" Style="{DynamicResource TabItemTemplate}" Foreground="White">
<StackPanel Orientation="Vertical" Margin="0 0 5 0" HorizontalAlignment="Center">
<TextBlock Margin="5 0 0 0" Text="Enter note for Front Office"/>
<Button Background="{DynamicResource SolidColorBrush2}" Content="Button1"/>
</StackPanel>
</TabItem>
<TabItem Header="DEF" Style="{DynamicResource TabItemTemplate}" Foreground="White">
<StackPanel Orientation="Vertical" Margin="0 0 5 0" HorizontalAlignment="Center">
<TextBlock Margin="5 0 0 0" Text="Enter note for Front Office"/>
<Button Background="{DynamicResource SolidColorBrush2}" Content="Button2"/>
</StackPanel>
</TabItem>
<TabItem Header="GHI" Style="{DynamicResource TabItemTemplate}" Foreground="White">
<StackPanel Orientation="Vertical" Margin="0 0 5 0" HorizontalAlignment="Center">
<TextBlock Margin="5 0 0 0" Text="Enter note for Front Office"/>
<Button Background="{DynamicResource SolidColorBrush2}" Content="Button3"/>
</StackPanel>
</TabItem>
</TabControl>
<Button Grid.Row="1" HorizontalAlignment="Center" Height="30" VerticalAlignment="Top" Click="ChangeTheme_Click">Change Theme</Button>
</Grid>这是我的C#代码
private void ChangeTheme_Click(object sender, RoutedEventArgs e)
{
SolidColorBrush brush2 = (SolidColorBrush)Resources["SolidColorBrush2"];
SolidColorBrush brush3 = (SolidColorBrush)Resources["SolidColorBrush3"];
brush2.Color = Color.FromArgb(255, 200, 200, 200);
brush3.Color = Color.FromArgb(255, 251, 132, 61);
}而错误是：
回答 1
Stack Overflow用户
回答已采纳
发布于 2016-01-20 09:21:23
对不起，你的主题做得不对。与其更改Solid脑刷的属性，不如进行整个资源项的替换，如本文在SO：see @Łukasz Rejman answer上所描述的那样
例如：
Resources["SolidColorBrush2"] = new SolidColorBrush(Color.FromArgb(255, 200, 200, 200));
Resources["SolidColorBrush3"] = new SolidColorBrush(Color.FromArgb(255, 251, 132, 61));页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/34895192
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