【 WPF 】重写TextBox样式

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1。代码如下

<Style x:Key="txtTest" TargetType="TextBox">
            <Setter Property="VerticalContentAlignment" Value="Center" />
            <Setter Property="SnapsToDevicePixels" Value="True" />//消除锯齿
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="TextBox">
                        <Grid x:Name="Grid">
                            <Border x:Name="Border" SnapsToDevicePixels="True"
                                CornerRadius="1"
                                BorderBrush="LightGray" BorderThickness="2" Background="White" />
                            <ScrollViewer x:Name="PART_ContentHost" BorderThickness="0"
IsTabStop="False" Margin="2" VerticalAlignment="Stretch"  />//"PART_ContentHost"专属名词，改动报错
                
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter TargetName="Border" Property="BorderBrush" Value="Blue"/>
                                <Setter TargetName="Border" Property="Opacity" Value="0.2"/>
                            </Trigger>//鼠标悬停

                            <Trigger Property="IsFocused" Value="True">
                                <Setter TargetName="Border" Property="BorderBrush" Value="Blue"/>
                                <Setter TargetName="Border" Property="Opacity" Value="0.5"/>
                            </Trigger>//焦点

                            <Trigger Property="IsEnabled" Value="False">
                                <Setter TargetName="Grid" Property="Opacity" Value="0.2" />
                            </Trigger>//无效
                    
                            <Trigger Property="IsReadOnly" Value="True">
                                <Setter TargetName="Grid" Property="IsEnabled" Value="False" />
                                <Setter TargetName="Border" Property="Opacity" Value="0.2" />
                                <Setter TargetName="PART_ContentHost" Property="Opacity" Value="0.5" />
                            </Trigger>//只读
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

2。初始状态

3。IsMouseOver

4。IsFocused