Question

我有一个number，如下所示：

SELECT
x.distributor_item_number, 
x.mfg_item_number, 
x.mfg_name, 
x.distributor_product_description, 
min(x.[LENGTH OF DESC]) 

INTO Product_Table
FROM [Product Table] AS x 

INNER JOIN 
(SELECT p.distributor_item_number, 
max(p.[LENGTH OF DESC]) AS [MAX LENGTH] 
FROM [Product Table] AS p 
GROUP BY p.distributor_item_number)  AS y ON (y.distributor_item_number = x.distributor_item_number) AND (y.[MAX LENGTH] = X.[LENGTH OF DESC])

GROUP BY x.distributor_item_number, x.mfg_item_number, x.mfg_name, x.distributor_product_description;

我按如下方式使用此CustomTextBox：

<TextBox x:Class="StackOverflow.CustomUserControl.CustomTextBoxView"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
     xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
     x:Name="MainTextBox"
     mc:Ignorable="d">
<TextBox.Template>
    <ControlTemplate>
        <Grid>
            <ScrollViewer x:Name="PART_ContentHost"
                          Margin="0,0,0,5"
                          Panel.ZIndex="1" />

            <Border CornerRadius="2"
                    Name="BorderToChange"
                    BorderThickness="0,0,0,3.7"/>

            <TextBlock Text="{Binding ElementName=MainTextBox, Path=HintText}">
                <TextBlock.Style>
                    <Style TargetType="{x:Type TextBlock}">
                        <Setter Property="Foreground"
                                Value="Transparent" />
                        <Setter Property="Margin"
                                Value="0,0,0,3" />
                        <Setter Property="VerticalAlignment"
                                Value="Bottom" />
                    </Style>
                </TextBlock.Style>
            </TextBlock>
        </Grid>
    </ControlTemplate>
</TextBox.Template>

在使用时，是否可以更改CustomTextBox的{{1}}内名为{BorderToChange”的<customUserControl:CustomTextBoxView Width="50" Height="50" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Text="{Binding Mode=TwoWay, Path=Period, UpdateSourceTrigger=PropertyChanged}"/>元素的属性BorderThickness？
我尝试了以下方法，但是没有用：

Border

Answer 1

在模板中使用{TemplateBinding}：

<Border CornerRadius="2" Name="BorderToChange" BorderThickness="{TemplateBinding BorderThickness}"/>

...并指定默认值：

<TextBox x:Class="..." BorderThickness="0,0,0,3.7"> ...

然后，您可以简单地将控件的BorderThickness属性设置为覆盖默认值：

<customUserControl:CustomTextBoxView ... BorderThickness="1" ... />

在CustomControl中更改子元素的样式

1 个答案: