Этот код работает (когда ControlType = "dropDown", а затем фон желтый):
<Window x:Class="TestCollapsed.Views.MainView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:TestCollapsed.Commands"
Title="Main Window" Height="400" Width="800">
<Window.Resources>
<Style x:Key="DropDownStyle" TargetType="TextBlock">
<Style.Triggers>
<DataTrigger Binding="{Binding ControlType}" Value="dropDown">
<Setter Property="Background" Value="Yellow"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel>
<TextBlock Visibility="Visible"
Text="This is going to be the dropdown control."
Style="{StaticResource DropDownStyle}"/>
</StackPanel>
</Window>
Но этот код работает не (когда ControlType = "dropDown", тогда TextBlock все еще невидимый):
<Window x:Class="TestCollapsed.Views.MainView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:c="clr-namespace:TestCollapsed.Commands"
Title="Main Window" Height="400" Width="800">
<Window.Resources>
<Style x:Key="DropDownStyle" TargetType="TextBlock">
<Style.Triggers>
<DataTrigger Binding="{Binding ControlType}" Value="dropDown">
<Setter Property="Visibility" Value="Visible"/>
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<StackPanel>
<TextBlock Visibility="Collapsed"
Text="This is going to be the dropdown control."
Style="{StaticResource DropDownStyle}"/>
</StackPanel>
</Window>
Почему я не могу установить видимость в стиле, как я могу предпочесть?