XAML 模板化控件如何编写类似 SelectedItem 的内容

Question

我正在通过模板控件创建我的第一个自定义控件。现在它工作正常，但我不知道如何在我的 table:

中获取 SelectedItem

<Style TargetType="local:DiaryControl">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="local:DiaryControl">
                <Border
                    Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}">
                    <ListBox ItemsSource="{Binding Path=Students, RelativeSource={RelativeSource TemplatedParent}}">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <Grid Width="Auto" HorizontalAlignment="Stretch">
                                    <Grid.ColumnDefinitions>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="*"/>
                                        <ColumnDefinition Width="*"/>
                                    </Grid.ColumnDefinitions>

                                    <Grid Column="0" Margin="20,0,10,0">
                                        <TextBlock VerticalAlignment="Center" Text="{Binding Id}"/>
                                    </Grid>
                                    <Grid Column="1" Margin="0,0,20,0">
                                        <TextBlock VerticalAlignment="Center" Text="{Binding FullName}"/>
                                    </Grid>
                                    <Grid Column="2" Margin="0,0,20,0">
                                        <ComboBox VerticalAlignment="Center" Height="20" FontSize="18" SelectedIndex="{Binding Reason, Mode=TwoWay}">
                                            <ComboBoxItem Content="1"/>
                                            <ComboBoxItem Content="2"/>
                                            <ComboBoxItem Content="3"/>
                                        </ComboBox>
                                    </Grid>
                                    ...
                                    <Grid Column="5" Margin="0,0,20,0">
                                        <Button VerticalAlignment="Center" Content="{Binding Comment}"/>
                                    </Grid>
                                </Grid>
                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

例如，当我触摸生成的 table 中的 TextBox、TextBlock 等时，我想要控件中的 SelectedItem 之类的东西，以对所选对象执行操作。

谁能帮忙？我在哪里可以了解它？

Answer 1

首先我需要将 ICommand 添加到 Students 集合中的 class Student

public ICommand Process
{
    get
    { 
        return new RelayCommand<object>((arg) => 
        {
            Student button = arg as Student;
            ----do something
        }
    });
}

并在 XAML 中：Command="{Binding Process}", CommandParameter="{Binding}"

XAML 模板化控件如何编写类似 SelectedItem 的内容

XAML Templated Control how to write somthing like SelectedItem

c#

xaml

custom-controls

winrt-xaml