如何在接收焦点时使自定义控件的值可编辑
本文关键字:自定义控件 编辑 焦点 | 更新日期: 2023-09-27 18:20:47
我创建了一个自定义WPF控件,它显示作为int的Weight
属性的值。当用户单击自定义控件或控件获得焦点时,用户应该能够编辑Weight属性的值。
为了实现这一点,我尝试了以下方法:
- 如果控件处于"非活动"状态,则会显示"权重"属性在文本块中
-
如果控件获得焦点,则Weight属性将显示在文本框中。
<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:WpfCustomControlLibrary1"> <Style TargetType="{x:Type local:CustomControl1}"> <Style.Resources> <ControlTemplate x:Key="Control_Focused" > <Border Background="Green" BorderBrush="Black" CornerRadius="50" Width="40" Height="40"> <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center"> <TextBox Width="35" Text="{Binding Mode=TwoWay,Path=Model.Weight,UpdateSourceTrigger=PropertyChanged,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type local:CustomControl1}} ,Converter={x:Static local:CustomControl1.IntToStringConverter}}" /> </StackPanel> </Border> </ControlTemplate> <ControlTemplate x:Key="Control"> <Border Background="Green" BorderBrush="Black" CornerRadius="50" Width="40" Height="40"> <StackPanel HorizontalAlignment="Center" VerticalAlignment="Center"> <TextBlock x:Name="PART_TextBlockWeighted" Text="{Binding Mode=TwoWay,Path=Model.Weight,UpdateSourceTrigger=PropertyChanged,RelativeSource={RelativeSource Mode=FindAncestor,AncestorType={x:Type local:CustomControl1}}}" HorizontalAlignment="Center" VerticalAlignment="Center" /> </StackPanel> </Border> </ControlTemplate> </Style.Resources> <Style.Triggers> <Trigger Property="IsFocused" Value="True"> <Setter Property="Template" Value="{StaticResource Control_Focused}" ></Setter> </Trigger> <Trigger Property="IsFocused" Value="False"> <Setter Property="Template" Value="{StaticResource Control}" ></Setter> </Trigger> </Style.Triggers> </Style>
这种自定义控件样式的问题在于,当用户单击TextBox时,触发器会将控件模板更改为TextBlock。我该怎么解决这个问题?
请尝试使用IsKeyboardFocusWithin
属性。我相信这会满足你的需要。
<Style.Triggers>
<Trigger Property="IsKeyboardFocusWithin" Value="True">
<Setter Property="Template" Value="{StaticResource Control_Focused}" ></Setter>
</Trigger>
<Trigger Property="IsKeyboardFocusWithin" Value="False">
<Setter Property="Template" Value="{StaticResource Control}" ></Setter>
</Trigger>
</Style.Triggers>