[英]How to change the Header image of TabItem through MouseOver?
我有一個這樣的TabControl
:
<TabControl>
<TabItem Header="playing" HorizontalAlignment="Left" Width="150" Tag="Tab1">
<TabItem.HeaderTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding}" ToolTip="playing" />
<Image Margin="10,0,0,0" Source="/logo.png" Height="25"/>
</StackPanel>
</DataTemplate>
</TabItem.HeaderTemplate>
</TabItem>
...
在這個TabControl
我有三個不同的 TabItem,每個選項卡項都有一個默認圖像。 我的目標是更改用戶放置鼠標的圖像 TabItem。
因此,在這種情況下,當鼠標懸停在此選項卡項目上時,帶有ToolTip
“播放”而不是logo.png
的 TabItem 1 應該具有logo2
。
我怎樣才能做到這一點?
注意:請注意,我正在使用 mahapp,並且我正在使用DataTemplate
來保留工具提示文本,而不會覆蓋 mahapp 選項卡項的原始樣式。
嘗試這個:
XAML:
<Controls:MetroWindow
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Controls="http://metro.mahapps.com/winfx/xaml/controls"
xmlns:local="clr-namespace:MahApps.Metro.Application21"
x:Class="MahApps.Metro.Application21.MainWindow"
BorderThickness="1"
BorderBrush="{DynamicResource AccentColorBrush}"
Icon="mahapps.metro.logo2.png"
Title="MainWindow"
Height="350"
Width="525">
<Controls:MetroWindow.Resources>
<DataTemplate x:Key="DataTemplate1">
<StackPanel x:Name="Panel1" Orientation="Horizontal">
<TextBlock Text="{Binding Text}" ToolTip="{Binding Text}" />
<Image x:Name="Image1" Source="{Binding Logo}" Margin="10,0,0,0" Height="25"/>
</StackPanel>
<DataTemplate.Triggers>
<Trigger SourceName="Panel1" Property="IsMouseOver" Value="true" >
<Setter TargetName="Image1" Property="Source" Value="logo4.png" />
</Trigger>
</DataTemplate.Triggers>
</DataTemplate>
</Controls:MetroWindow.Resources>
<Controls:MetroWindow.DataContext>
<local:MyViewModel/>
</Controls:MetroWindow.DataContext>
<Grid>
<TabControl ItemsSource="{Binding Data}" ItemTemplate="{StaticResource DataTemplate1}">
</TabControl>
</Grid>
視圖模型:
public class MyViewModel
{
public ObservableCollection<MyData> Data { get; set; }
public MyViewModel()
{
Data = new ObservableCollection<MyData>
{
new MyData {Logo = "logo1.png", Text = "playing 1" },
new MyData {Logo = "logo2.png", Text = "playing 2" },
new MyData {Logo = "logo3.png", Text = "playing 3" }
};
}
}
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