深入浅出WPF 第二部分(27)-优快云博客

本文详细介绍了如何使用FrameworkTemplate类中的FindName方法来检索内部控件，并通过实例展示了在不同模板中查找特定控件的过程。

11.4.3 寻找失落的控件

ControlTemplate和DataTemplate两个类均派生自FrameworkTemplate类，这个类有个名为FindName的方法供我们检索其内部控件。

ControlTemplate：

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="200" Width="200">
    <Window.Resources>
        <ControlTemplate x:Key="ct">
            <StackPanel Background="Orange" Width="100" Height="100">
                <TextBox x:Name="textBox1" Margin="5"/>
                <TextBox x:Name="textBox2" Margin="5"/>
                <TextBox x:Name="textBox3" Margin="5"/>
            </StackPanel>
        </ControlTemplate>
    </Window.Resources>
    <Grid>
        <StackPanel>
            <UserControl x:Name="uc" Template="{StaticResource ResourceKey=ct}"/>
            <Button Content="OK" Click="Button_Click" Margin="5" Width="60"/>
        </StackPanel>
    </Grid>
</Window>

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            TextBox textBox1 = this.uc.Template.FindName("textBox1", this.uc) as TextBox;
            textBox1.Text = "月光宝盒";
            StackPanel stackPanel = textBox1.Parent as StackPanel;
            (stackPanel.Children[1] as TextBox).Text = "大话西游";
            (stackPanel.Children[2] as TextBox).Text = "菠萝菠萝蜜";
        }

DataTemplate：

<Window x:Class="WpfApp2.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:objs="clr-namespace:WpfApp2.Objects"
        Title="MainWindow" Height="200" Width="200">
    <Window.Resources>
        <objs:Student x:Key="ds" Name="Timothy" Skill="WPF" HasJob="True" Id="1"/>
        
        <DataTemplate DataType="{x:Type objs:Student}">
            <Border BorderBrush="Orange" BorderThickness="2" CornerRadius="5">
                <StackPanel>
                    <TextBlock Text="{Binding Id}" Margin="5"/>
                    <TextBlock x:Name="textBlockName" Text="{Binding Name}" Margin="5"/>
                    <TextBlock Text="{Binding Skill}" Margin="5"/>
                    <TextBlock Text="{Binding HasJob}" Margin="5"/>
                </StackPanel>
            </Border>
        </DataTemplate>
    </Window.Resources>
    
    <StackPanel>
        <ContentPresenter x:Name="cp" Content="{StaticResource ds}" Margin="5"/>
        <Button Content="Find" Margin="5,5" Click="Button_Click" Width="80"/>
    </StackPanel>
</Window>

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var st = this.cp.Content as Student;
            MessageBox.Show(string.Format("Name: {0}", st.Name));
        }