7

第一种样式的 xaml 可以按我的意愿工作，使用 setter 生成一个带有 Wingding 字形的按钮来布置内容及其属性。这种风格的第二个版本尝试做同样的事情，但使用 DataTemplate 作为 Content，但它只显示 DataTemplate 的类型（即 System.Windows.DataTemplate）。

  1. 为什么第 2 版显示的内容与第 1 版不同？
  2. 假设修复是微不足道的，出于个人喜好之外的任何原因，一种风格的版本是否会比另一种更可取？

注意：我正在显示绑定和触发器，以防其中有影响内容的东西，但这只是样式的第一部分有所不同

干杯，
贝里尔

样式 1

显示：在此处输入图像描述

<Style x:Key="EditCommandButtonStyle" TargetType="{x:Type Button}" >
    <Setter Property="Content" Value="a" />
    <Setter Property="Foreground" Value="Navy" />
    <Setter Property="FontFamily" Value="Wingdings 3" />
    <Setter Property="FontWeight" Value="Bold" />
    <Setter Property="FontSize" Value="18" />
    <Setter Property="Width" Value="30" />
    <Setter Property="Height" Value="Auto" />

    <!--What makes it an Edit button-->
    <Setter Property="Command" Value="{Binding ActivateThisSatelliteVmCommand}"/>
    <Setter Property="ToolTip">
        <Setter.Value>
            <TextBlock>
                <TextBlock.Text>
                    <Binding Path="HeaderLabel" StringFormat="{resx:Resx ResxName=Smack.Core.Presentation.Resources.MasterDetail, Key=Item_Edit_Label}"/>
                </TextBlock.Text>
            </TextBlock>
        </Setter.Value>
    </Setter>

    <!-- WHen its available -->
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Border x:Name="theBorder" CornerRadius="4">
                    <ContentPresenter x:Name="theContent" VerticalAlignment="Center" HorizontalAlignment="Center" />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="False">
                        <Setter TargetName="theContent" Property="Visibility" Value="Hidden"/>
                        <Setter TargetName="theBorder" Property="Background" Value="Transparent"/>
                    </Trigger>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="theContent" Property="Visibility" Value="Visible"/>
                    </Trigger>
                    <Trigger Property="IsPressed" Value="True">
                        <Setter TargetName="theContent" Property="Visibility" Value="Visible"/>
                        <Setter TargetName="theBorder" Property="Background" Value="Orange"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

风格 2

显示“System.Windows.DataTemplate”

<Style x:Key="EditCommandButtonStyle" TargetType="{x:Type Button}" >
    <Setter Property="Content">
        <Setter.Value>
            <DataTemplate>
                <TextBlock Text="a" FontFamily="Wingdings 3" FontWeight="Bold" FontSize="18" Foreground="Navy" />
            </DataTemplate>
        </Setter.Value>
    </Setter>

    <!--What makes it an Edit button-->
    <Setter Property="Command" Value="{Binding ActivateThisSatelliteVmCommand}"/>
    <Setter Property="ToolTip">
        <Setter.Value>
            <TextBlock>
                <TextBlock.Text>
                    <Binding Path="HeaderLabel" StringFormat="{resx:Resx ResxName=Core.Presentation.Resources.MasterDetail, Key=Item_Edit_Label}"/>
                </TextBlock.Text>
            </TextBlock>
        </Setter.Value>
    </Setter>

    <!-- When its available -->
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Border x:Name="theBorder" CornerRadius="4">
                    <ContentPresenter x:Name="theContent" VerticalAlignment="Center" HorizontalAlignment="Center" />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="False">
                        <Setter TargetName="theContent" Property="Visibility" Value="Hidden"/>
                        <Setter TargetName="theBorder" Property="Background" Value="Transparent"/>
                    </Trigger>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter TargetName="theContent" Property="Visibility" Value="Visible"/>
                    </Trigger>
                    <Trigger Property="IsPressed" Value="True">
                        <Setter TargetName="theContent" Property="Visibility" Value="Visible"/>
                        <Setter TargetName="theBorder" Property="Background" Value="Orange"/>
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
4

2 回答 2

16

您的Content属性设置为DataTemplate

DataTemplates旨在与属性一起使用，而不是通过属性Template直接插入到 VisualTreeContent

更改您的样式设置器以设置ContentTemplate而不是Content它应该可以正常工作

<Setter Property="ContentTemplate">
    <Setter.Value>
        <DataTemplate>
            <TextBlock Text="a" FontFamily="Wingdings 3" FontWeight="Bold" FontSize="18" Foreground="Navy" />
        </DataTemplate>
    </Setter.Value>
</Setter>

至于你的第二个问题，我更喜欢第一个问题，因为它更简单，而且我认为它在可视树中可能包含更少的元素（我必须仔细检查）

于 2012-06-16T15:52:30.903 回答
0

我找到了另一种解决此问题的方法：

<Style x:Key="DefaultButtonBaseStyle" TargetType="{x:Type ButtonBase}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type ButtonBase}">
                <Grid>
                    <Border x:Name="BackBorder" Margin="0" Padding="0"
                            BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding BorderBrush}"/>
                    <Border x:Name="FrontBorder" BorderThickness="{TemplateBinding BorderThickness}" BorderBrush="{TemplateBinding BorderBrush}" Background="{TemplateBinding Background}"
                            Margin="0" Padding="{TemplateBinding Padding}"
                            CornerRadius="{Binding ElementName=BackBorder, Path=CornerRadius}">
                        <ContentPresenter VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                                          HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                          SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                    </Border>
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>
于 2020-10-12T22:08:57.150 回答