WPF TabItem - 图像绑定 - 使用触发器
WPF TabItem - Image Binding - using Triggers
我想在 TabControl
的 header 的标题内显示图像
这个问题()似乎是对的,但我使用了触发器,它对我的代码没有帮助。
这是我提供的:
<TabControl Name="MainTabControl" Margin="0,28,0,0" TabStripPlacement="Top" >
<TabControl.Resources>
<Image x:Key="imgProfile" Source="/Icons/red icons/profile.png" />
<Image x:Key="imgComment" Source="Icons/red icons/notification.png" />
<Style TargetType="TabItem" >
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<WrapPanel>
<TextBlock Text="{Binding}"
MouseDown="UIElement_OnMouseDown"
FontSize="18"
/>
<Image Height="25" Margin="4,0,4,0"
Source="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=Tag.Source}" />
</WrapPanel>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TabItem">
<Border Name="Border" BorderThickness="1,1,1,0" BorderBrush="Gainsboro" CornerRadius="0" Margin="2,0">
<ContentPresenter x:Name="ContentSite"
VerticalAlignment="Center"
HorizontalAlignment="Center"
ContentSource="Header"
Margin="5,2"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="False">
<Setter TargetName="Border" Property="BorderBrush" Value="Transparent" />
<Setter TargetName="Border" Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{DynamicResource TabItemNormal}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</TabControl.Resources>
<TabItem Name="tiProfile" Header="a" Tag="{StaticResource imgProfile}"></TabItem>
<TabItem Name="tiComment" Header="b" Tag="{StaticResource imgComment}"></TabItem>
</TabControl>
从 TabItem.HeaderTemplate 到 TabItem.Tag 的绑定必须通过 TabItem 类型的 FindAncestor。
改为在资源中创建图像,创建 BitmapImage,并将其绑定到 Image.Source。
所以,资源:
<BitmapImage x:Key="imgProfile" Source="/Icons/red icons/profile.png" />
<BitmapImage x:Key="imgComment" Source="Icons/red icons/notification.png" />
Header 数据模板:
<Image Height="25" Margin="4,0,4,0"
Source="{Binding Tag, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabItem}}}" />
我想在 TabControl
的 header 的标题内显示图像这个问题(
这是我提供的:
<TabControl Name="MainTabControl" Margin="0,28,0,0" TabStripPlacement="Top" >
<TabControl.Resources>
<Image x:Key="imgProfile" Source="/Icons/red icons/profile.png" />
<Image x:Key="imgComment" Source="Icons/red icons/notification.png" />
<Style TargetType="TabItem" >
<Setter Property="HeaderTemplate">
<Setter.Value>
<DataTemplate>
<WrapPanel>
<TextBlock Text="{Binding}"
MouseDown="UIElement_OnMouseDown"
FontSize="18"
/>
<Image Height="25" Margin="4,0,4,0"
Source="{Binding RelativeSource={RelativeSource Mode=TemplatedParent}, Path=Tag.Source}" />
</WrapPanel>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TabItem">
<Border Name="Border" BorderThickness="1,1,1,0" BorderBrush="Gainsboro" CornerRadius="0" Margin="2,0">
<ContentPresenter x:Name="ContentSite"
VerticalAlignment="Center"
HorizontalAlignment="Center"
ContentSource="Header"
Margin="5,2"/>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="False">
<Setter TargetName="Border" Property="BorderBrush" Value="Transparent" />
<Setter TargetName="Border" Property="Background" Value="Transparent" />
<Setter Property="Foreground" Value="{DynamicResource TabItemNormal}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</TabControl.Resources>
<TabItem Name="tiProfile" Header="a" Tag="{StaticResource imgProfile}"></TabItem>
<TabItem Name="tiComment" Header="b" Tag="{StaticResource imgComment}"></TabItem>
</TabControl>
从 TabItem.HeaderTemplate 到 TabItem.Tag 的绑定必须通过 TabItem 类型的 FindAncestor。
改为在资源中创建图像,创建 BitmapImage,并将其绑定到 Image.Source。
所以,资源:
<BitmapImage x:Key="imgProfile" Source="/Icons/red icons/profile.png" />
<BitmapImage x:Key="imgComment" Source="Icons/red icons/notification.png" />
Header 数据模板:
<Image Height="25" Margin="4,0,4,0"
Source="{Binding Tag, Mode=OneWay, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type TabItem}}}" />