I am implementing a TabControl for a dialog box in WPF. The color of the selected tab (mouse-down) is white by default. I want to change the color of that selected tab to the color of hover (when I hover over a tab, the color of the tab changes to an Office-blue-gradient, which is what I want the color of the selected tab to be on mouse-click).
How can I do that?
This piece of code does not work:
<Style x:Key="StyleTabControl" TargetType="{x:Type TabItem}">
<Setter Property="Background" Value="#FFFDFDFD"/>
<Style.Triggers>
<Trigger Property="IsSelected " Value="True">
<Setter Property="Background" Value="SlateGray"></Setter>
</Trigger>
</Style.Triggers>
</Style>
Note: I also tried IsMouseCaptured event for the trigger property. Still does not work.
Alright...after hours of trying, I have realized that the TabItem selection behaviour is defined at the Template level. So, if I wana change the backgrnd color, I do this:
<Window.Resources>
<Style TargetType="{x:Type TabItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TabItem}">
<Border>
<Grid>
<Grid>
<Border x:Name="border"
CornerRadius="3,3,0,0"
Background="WhiteSmoke"/>
</Grid>
<ContentPresenter ContentSource="Header"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver"
Value="True">
<Setter TargetName="border"
Property="Background"
Value="LightGray" />
</Trigger>
<Trigger Property="IsSelected"
Value="True">
<Setter TargetName="border"
Property="Background"
Value="LightGray" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
来源：https://stackoverflow.com/questions/18470918/how-to-change-the-color-of-the-selected-tab-in-the-tabcontrol