Question

我有一个包含很多输入参数的视图。每个参数由一个标签（参数名称），一个文本框（用于其值）和另一个标签（用于其单位）（例如kNm）组成。

控件显示在水平Stackpanel中。

更改文本框的文本（ToWay绑定）时，基础属性（例如DesignLife）不再更新，因为我从纯WPF（OnPropertyChanged）切换为MVVM Light（RaisePropertyChanged）。

以下是一些相关的代码段：

using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;

namespace xxxx.Views.CustomControls
{   
    public class InputParameter : ContentControl
    {
        static InputParameter()
        {
            DefaultStyleKeyProperty.OverrideMetadata(typeof(InputParameter), new FrameworkPropertyMetadata(typeof(InputParameter)));
        }

        public override void OnApplyTemplate()
        {
            base.OnApplyTemplate();
        }      
 // some properties left out
        public static readonly DependencyProperty TextProperty =
         DependencyProperty.Register("Text", typeof(string), typeof(InputParameter));
        public string Text
        {
            get => (string)GetValue(TextProperty);
            set => SetValue(TextProperty, value);
        }

    }
}

<UserControl
    x:Class="xxxx.Views.MainUserControls.Column"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:cc="clr-namespace:xxxx.Views.CustomControls"
    xmlns:cf="clr-namespace:xxxx.Model.Config"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:tt="clr-namespace:xxxx.Properties"
    DataContext="{Binding Main.Calc, Source={StaticResource Locator}}"
    mc:Ignorable="d">
    <GroupBox Margin="3">

        <StackPanel Orientation="Vertical">

<!-- Stuff left out -->

            <cc:InputParameter
                NameContent="Design life"
                Text="{Binding DesignLife, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True, StringFormat=N0}"                  
                UnitContent="years" />
<!-- Stuff left out -->

        </StackPanel>
    </GroupBox>
</UserControl>

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:cc="clr-namespace:CoCa.Views.CustomControls"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">
    <Style x:Key="InputParm" TargetType="{x:Type cc:InputParameter}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type cc:InputParameter}">
                    <StackPanel Style="{StaticResource SPanel}">

                        <Label
                            x:Name="PART_NameLabel"
                            Width="130"
                            HorizontalContentAlignment="Left"
                            Content="{TemplateBinding NameContent}"
                            Foreground="{TemplateBinding Foreground}"
                            Style="{StaticResource LabelStyle1}"
                            ToolTip="{TemplateBinding ToolTip}" />
                        <TextBox
                            x:Name="PART_TextBox"
                            Width="70"
                            Background="{TemplateBinding TbBackground}"
                            Foreground="{TemplateBinding Foreground}"
                            Style="{StaticResource Tb}"
                            Text="{TemplateBinding Property=Text}" />
                        <Label
                            x:Name="PART_UnitLabel"
                            Content="{TemplateBinding UnitContent}"
                            Foreground="{Binding ElementName=PART_NameLabel, Path=Foreground}"
                            Style="{StaticResource Unit}" />

                    </StackPanel>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</ResourceDictionary>

private int _designLife;    
public int DesignLife
{
    get => _designLife;

    set
    {
        Set<int>(() => DesignLife, ref _designLife, value, true);
    }
}

我怀疑RaisePropertyChanged不会被调用，因为在类InputParameter的Text DependencyProperty中没有使用它。（也许在幕后吗？）

问题：

1：我制作InputParameter的方法是否可行？

2：我的怀疑正确吗？

3 a：如果是这样，我如何获得RaisePropertyChanged的电话？

b：如果不是这样，可能是什么问题？

Contentcontrol不更新文本

0 个答案: