相对的WPF新手,这可能会有一个简单的解决方案(我希望!)。我有两个属性的类:访问内容模板中的控件的方法
public class MyClass
{
public String Name { get; set; }
public String Description { get; set; }
}
我有具有正文块和一个按钮的用户控制:正文块显示文本(明显)和所述按钮用于任一加粗或取消粗体文本的文本块:
MyControl.xaml:
<UserControl
x:Class="WpfApplication1.MyControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="300"
xmlns:this="clr-namespace:WpfApplication1">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="48" />
</Grid.ColumnDefinitions>
<TextBlock
x:Name="txtDescription"
Grid.Column="0"
Text="{Binding Path=Description, RelativeSource={RelativeSource AncestorType={x:Type this:MyControl}}}" />
<Button
x:Name="btnBold"
Grid.Column="1"
Content="Bold"
Click="btnBold_Click" />
</Grid>
</UserControl>
MyControl.xaml.cs:
public partial class MyControl : UserControl
{
public static readonly DependencyProperty DescriptionProperty = DependencyProperty.Register("Description", typeof(String), typeof(MyControl));
public String Description
{
get { return GetValue(MyControl.DescriptionProperty) as String; }
set { SetValue(MyControl.DescriptionProperty, value); }
}
public MyControl()
{
InitializeComponent();
}
private void btnBold_Click(object sender, RoutedEventArgs e)
{
ToggleBold();
}
public void ToggleBold()
{
if (txtDescription.FontWeight == FontWeights.Bold)
{
btnBold.Content = "Bold";
txtDescription.FontWeight = FontWeights.Normal;
}
else
{
btnBold.Content = "Unbold";
txtDescription.FontWeight = FontWeights.Bold;
}
}
}
在我的主窗口中,我有一个选项卡控件,它具有项目模板(在每个选项卡的标题中显示MyClass.Name)和内容模板。内容模板包含我上面的控制之一,MyClass.Description势必MyControl.Description:
MainWindow.xaml:
<Window
x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow"
Height="350"
Width="525"
xmlns:this="clr-namespace:WpfApplication1">
<Grid>
<TabControl x:Name="tabItems">
<TabControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}" />
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<this:MyControl
Description="{Binding Description}" />
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</Grid>
</Window>
MainWindow.xaml.cs:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
List<MyClass> myClasses = new List<MyClass>();
myClasses.Add(new MyClass() { Name = "My Name", Description = "My Description" });
myClasses.Add(new MyClass() { Name = "Your Name", Description = "Your Description" });
tabItems.ItemsSource = myClasses;
}
}
当程序运行我将两个类型为MyClass的对象添加到列表中,将列表设置为Tab控件的ItemsSource属性,并且它完全正常工作:我得到两个带有“我的名字”和“您的姓名”作为标题的选项卡,说明显示在正确的位置,按钮将打开或关闭粗体rrectly。
我的问题是,如何添加标签控件的一个按钮,置身其中可以调用MyControl对象,它是在选择项目的内容模板的MyControl.ToggleBold方法:
MainWindow.xaml :
<Window
x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow"
Height="350"
Width="525"
xmlns:this="clr-namespace:WpfApplication1">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<TabControl x:Name="tabItems" Grid.Row="0">
<TabControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}" />
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate>
<this:MyControl
x:Name="myControl"
Description="{Binding Description}"/>
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
<Button Grid.Row="1" Content="Toggle Selected Tab" Click="Button_Click" />
</Grid>
</Window>
MainWindow.xaml.cs:
...
private void Button_Click(object sender, RoutedEventArgs e)
{
MyClass myClass = tabItems.SelectedItem as MyClass;
MyControl myControl;
///get the instance of myControl that is contained
///in the content template of tabItems for the
///myClass item
myControl.ToggleBold();
}
...
我知道我可以通过调用tabItems.SelectedContentTemplate访问数据模板,但一就我所知,我无法访问模板中的控件(我认为我也不应该这样做)。有FindName方法,但我不知道通过作为templatedParent参数。
任何帮助将非常感激。
你有没有考虑使用MVVM来实现这一功能? – 2012-01-12 15:49:57