如何更改WPF中按鈕的前景色？

Question

我想在鼠標移過時更改按鈕的文本顏色（前景）。我通過編輯下面的代碼

<Style x:Key="ButtonStyle_black" TargetType="{x:Type Button}"> 
     <Setter Property="Foreground" Value="{DynamicResource TextBrush}"/> 
     <Setter Property="Background" Value="{DynamicResource GrayBrush10}"/> 
     <Setter Property="BorderBrush" Value="{DynamicResource TextBoxBorderBrush}"/> 
     <Setter Property="BorderThickness" Value="1"/> 
     <Setter Property="Controls:ControlsHelper.ContentCharacterCasing" Value="Upper"/> 
     <Setter Property="Controls:ControlsHelper.CornerRadius" Value="3"/> 
     <Setter Property="FontFamily" Value="{DynamicResource DefaultFont}"/> 
     <Setter Property="FontSize" Value="{DynamicResource UpperCaseContentFontSize}"/> 
     <Setter Property="FontWeight" Value="Bold"/> 
     <Setter Property="MinHeight" Value="25"/> 
     <Setter Property="Padding" Value="5,6"/> 
     <Setter Property="Template"> 
      <Setter.Value> 
       <ControlTemplate TargetType="{x:Type Button}"> 
        <Grid> 
         <Border x:Name="Background" Background="{TemplateBinding Background}" CornerRadius="{Binding (Controls:ControlsHelper.CornerRadius), Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}"/> 
         <Border x:Name="Border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{x:Null}" CornerRadius="{Binding (Controls:ControlsHelper.CornerRadius), Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> 
         <Border x:Name="DisabledVisualElement" Background="{DynamicResource ControlsDisabledBrush}" CornerRadius="{Binding (Controls:ControlsHelper.CornerRadius), Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" IsHitTestVisible="False" Opacity="0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/> 
         <Controls:ContentControlEx x:Name="PART_ContentPresenter" ContentCharacterCasing="{Binding (Controls:ControlsHelper.ContentCharacterCasing), RelativeSource={RelativeSource TemplatedParent}}" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" ContentStringFormat="{TemplateBinding ContentStringFormat}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" Padding="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/> 
        </Grid> 
        <ControlTemplate.Triggers> 
         <Trigger Property="IsMouseOver" Value="True"> 
          <Setter Property="Foreground" Value="Black"/> 
         </Trigger> 
         <Trigger Property="IsPressed" Value="True"> 
         </Trigger> 
         <Trigger Property="IsKeyboardFocusWithin" Value="True"> 
          <Setter Property="BorderBrush" TargetName="Border" Value="{DynamicResource ButtonMouseOverBorderBrush}"/> 
          <Setter Property="BorderThickness" TargetName="Border" Value="2"/> 
         </Trigger> 
         <Trigger Property="IsEnabled" Value="False"> 
          <Setter Property="Opacity" TargetName="DisabledVisualElement" Value="0.7"/> 
          <Setter Property="Opacity" TargetName="PART_ContentPresenter" Value="0.3"/> 
         </Trigger> 
        </ControlTemplate.Triggers> 
       </ControlTemplate> 
      </Setter.Value> 
     </Setter> 
    </Style> 

但編輯該模板前景色變化不工作已成功地改變背景顏色。

Answer 1

爲此，您可以使用樣式，

<Window.Resources> 
     <Style x:Key="ButtonCancel" TargetType="{x:Type Button}"> 
      <Setter Property="Foreground"> 
       <Setter.Value> 
        <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
         <GradientStop Color="Red" Offset="0"/>      
        </LinearGradientBrush> 
       </Setter.Value> 
      </Setter> 
      <Style.Triggers> 
       <Trigger Property ="IsMouseOver" Value="True"> 
        <Setter Property= "Foreground" > 
         <Setter.Value> 
          <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"> 
           <GradientStop Color="Green" Offset="0"/> 
          </LinearGradientBrush> 
         </Setter.Value> 
        </Setter> 
       </Trigger> 
      </Style.Triggers> 
     </Style> 
    </Window.Resources> 
    <Grid> 
     <Button Style="{DynamicResource ButtonCancel}" FontSize="18" FontWeight="Bold" Width="144" Name="btnCancel" 
       HorizontalAlignment="Right" Grid.Row="1" Grid.Column="1" Margin="0,73.5,0,55.5"> this is test 
     </Button> 
    </Grid>