需要非常小的 WPF C# 示例 [关闭]

Question

我是 WPF 和 MVVM 结构的初学者。以下是我查看部分和相关文件的代码：

ListOfVehicle

<Window x:Class="Seris.ListOfVehicle"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            Title="ListOfVehcle" Height="600" Width="700"
            xmlns:cnv="clr-namespace:Seris.Converters">
<Window.Resources>
    <cnv:ID2Name x:Key="converter" />
</Window.Resources>

<Grid HorizontalAlignment="Center">

    <Label Content="Manage Vehicle" HorizontalAlignment="Left" Height="27" Margin="261,8,0,0" VerticalAlignment="Top" Width="103" FontWeight="Bold" FontSize="12"/>
    <Label Content="SERIS CAD" HorizontalAlignment="Left" Height="30" Margin="53,8,0,0" VerticalAlignment="Top" Width="84" FontWeight="Bold"/>
    <Menu x:Name="ListOfPersonnnel" HorizontalAlignment="Left" Height="32" Margin="10,35,0,0" VerticalAlignment="Top" Width="603">
        <MenuItem Header="Manage Vehicle &gt;&gt;" />
    </Menu>

    <Button Name="Add_Button" CommandParameter="add"  Command="{Binding OpenAddWindow_Command}"  Content="Add" Height="28" Width="81" Margin="246,396,315,46"/>
    <Button Name="Replace_Button" CommandParameter="replace" Command="{Binding ReplaceButton_Command}" IsEnabled="{Binding IsEnableReplaceButton, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"  Content="Replace" Height="28" Width="81" Margin="345,396,216,46"/>
    <Button Name="Remove_Button" CommandParameter="remove" Command="{Binding RemoveButton_Command}" IsEnabled="{Binding IsEnableReplaceButton, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"  Content="Remove" Height="28" Width="81" Margin="442,396,119,46"/>


    <ListView Name ="Grid" Margin="104,67,185,226" >
        <DataGrid Name="DG" ItemsSource="{Binding ListItems, UpdateSourceTrigger=PropertyChanged}" SelectedItem="{Binding SelectedRow, Mode=TwoWay}"  SelectionMode="Single" GridLinesVisibility="None" IsReadOnly="True" AutoGenerateColumns="False" BorderThickness="0">
            <DataGrid.Columns>
                <DataGridTextColumn Header="Vehicle No" Binding="{Binding VehicleNo}"/>
                <DataGridTextColumn Header="Model" Binding="{Binding Model}" />
                <DataGridTextColumn Header="ManufacturingDate" Binding="{Binding ManufacturingDate}" />
                <DataGridTextColumn Header="IUNo" Binding="{Binding IUNo}" />
                <DataGridTextColumn Header="Personnel" Binding="{Binding PersonnelNameSelected, Converter={StaticResource converter} }" />
                <DataGridTextColumn Header="Unique No" Binding="{Binding UniqueNo}"/>
            </DataGrid.Columns>
        </DataGrid>
    </ListView>


</Grid>

</Window>

做完这些后，我卡在了一个点。我需要的是如下，但不知道如何实现。

假设，我在视图部分放了 2 个文本框和一个标签。 （分别考虑TextBox1、TextBox2和Label）

我需要的是非常小的 WPF C# 示例，这样当我单击特定的文本框时，它会在标签中提供内容以及该文本框的名称。

即名称是“TextBox1”，内容是“你好吗？”

Answer 1

使用触发器和 StringFormat 可以帮助您解决问题..

<Grid>
    <ContentControl>
        <ContentControl.ContentTemplate>
            <DataTemplate>
                <StackPanel>
                    <TextBlock Name="myTextBlock"/>
                    <TextBox Name="TextBox1"></TextBox>
                    <TextBox Name="TextBox2"></TextBox>
                </StackPanel>
                <DataTemplate.Triggers>
                    <DataTrigger Binding="{Binding IsKeyboardFocused, ElementName=TextBox1}" Value="true">
                        <Setter Property="Text" TargetName="myTextBlock">
                            <Setter.Value>
                                <MultiBinding StringFormat="{}Name is '{0}', Content is '{1}'">
                                    <Binding ElementName="TextBox1" Path="Name" />
                                    <Binding ElementName="TextBox1" Path="Text" />
                                </MultiBinding>
                            </Setter.Value>
                        </Setter>
                    </DataTrigger>
                    <DataTrigger Binding="{Binding IsKeyboardFocused, ElementName=TextBox2}" Value="true">
                        <Setter Property="Text" TargetName="myTextBlock">
                            <Setter.Value>
                                <MultiBinding StringFormat="{}Name is '{0}', Content is '{1}'">
                                    <Binding ElementName="TextBox2" Path="Name" />
                                    <Binding ElementName="TextBox2" Path="Text" />
                                </MultiBinding>
                            </Setter.Value>
                        </Setter>
                    </DataTrigger>
                </DataTemplate.Triggers>
            </DataTemplate>
        </ContentControl.ContentTemplate>
    </ContentControl>
</Grid>