如何從代碼隱藏中更改DataTemplate中的字體顏色？

Question

我有一個像這樣應用於ListBoxItems的XAML DataTemplate。注意靠近底部的網格。我想要做的是根據文本的值改變綁定文本的顏色，如'Status：ERROR'，其中'ERROR'爲紅色。

<DataTemplate x:Key="ItemTemplate"> 
    <Border BorderBrush="Gray" BorderThickness="1"> 
     <Grid> 
      <Grid.RowDefinitions> 
       <RowDefinition Height="3*"/> 
       <RowDefinition Height="*"/> 
       <RowDefinition Height="*"/> 
      </Grid.RowDefinitions> 
      <Rectangle Grid.Row="0" Grid.Column="0"> 
       <Rectangle.Fill> 
        <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1"> 
         <GradientStop Color="#FFA9A9A9" Offset="1.0"/> 
         <GradientStop Color="#FFF4F4F5" Offset="0.0"/> 
        </LinearGradientBrush> 
       </Rectangle.Fill> 
      </Rectangle> 
      <Label Content="{Binding Name}" FontSize="22" Grid.Row="0" Grid.Column="0" VerticalAlignment="Center"/> 
      <Rectangle Grid.Row="1" Grid.Column="0" Grid.RowSpan="3"> 
       <Rectangle.Fill> 
        <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1"> 
         <GradientStop Color="#FFF0F0F1" Offset="1.0"/> 
         <GradientStop Color="#FFF4F4F5" Offset="0.0"/> 
        </LinearGradientBrush> 
       </Rectangle.Fill> 
      </Rectangle> 
      <Grid Grid.Row="1" Grid.Column="0"> 
       <Grid.ColumnDefinitions> 
        <ColumnDefinition Width="*"/> 
        <ColumnDefinition Width="2*"/> 
       </Grid.ColumnDefinitions> 
       <Label Content="Status:"/> 
       <Label Content="{Binding Status}" Grid.Column="1"/> 
      </Grid> 
      <Label Content="{Binding Bookmark}" ContentStringFormat="Last Bookmark: {0}" Grid.Row="3" Grid.Column="0"/> 
     </Grid> 
    </Border> 
</DataTemplate> 

如何更改文本文字的顏色從後面的代碼（C＃），其綁定狀態<Label>？ （或者，如果不是來自後面的代碼，如何在XAML？Status中可以有3個文本值（排隊，運行和錯誤），並且每個都與指定顏色（藍色，綠色和紅色）相匹配）

Answer 1

基於@SLaks提示，我能夠找出完整的答案。這是對別人：

此：

<Grid Grid.Row="1" Grid.Column="0"> 
    <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="*"/> 
     <ColumnDefinition Width="2*"/> 
    </Grid.ColumnDefinitions> 
    <Label Content="Status:"/> 
    <Label Content="{Binding Status}" Grid.Column="1"/> 
</Grid> 

變爲這樣：

<Grid Grid.Row="1" Grid.Column="0"> 
    <Grid.ColumnDefinitions> 
     <ColumnDefinition Width="*"/> 
     <ColumnDefinition Width="2*"/> 
    </Grid.ColumnDefinitions> 
    <Label Content="Status:"/> 
    <Label Content="{Binding Status}" Grid.Column="1"> 
     <Label.Style> 
      <Style TargetType="Label"> 
       <Style.Triggers> 
        <DataTrigger Binding="{Binding Status}" Value="RUNNING"> 
         <Setter Property="Label.Foreground" Value="Green"></Setter> 
        </DataTrigger> 
        <DataTrigger Binding="{Binding Status}" Value="ERROR"> 
         <Setter Property="Label.Foreground" Value="Red"></Setter> 
        </DataTrigger> 
        <DataTrigger Binding="{Binding Status}" Value="QUEUED"> 
         <Setter Property="Label.Foreground" Value="Blue"></Setter> 
        </DataTrigger> 
       </Style.Triggers> 
      </Style> 
     </Label.Style> 
    </Label> 
</Grid>