我是新来的自定义控件创建。我已经为基于Selector类的新自定义控件奠定了一些基础。我的理解是我应该使用这个类,因为我需要控件拥有一个Items集合和处理选择的能力。我相信更改ItemTemplate可能会覆盖一些此功能,因为我没有在控制级别或应用程序级别收到SelectionChanged事件。我想如果我是对的,有某种SelectionRegion XAML标签可以放入DataTemplate内部。我找不到这样的运气。在浏览谷歌一段时间之后,我已经准备好提问了。我错过了什么?以下是ItemTemplate标记。谢谢你的帮助。如果您能告诉我为什么TextBlock中的文本被括在圆括号中,即使数据不是,也要多谢。WPF - 选择器 - 自定义控件 - SelectionChanged事件不会触发
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<Border BorderBrush="Black" BorderThickness="1">
<TextBlock Text="{Binding}" Foreground="Black" Background="White" MinHeight="12" MinWidth="50"/>
</Border>
</DataTemplate>
</Setter.Value>
</Setter>
在一个评论者的要求,这里是控制整个XAML至今:
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:SourceMedicalWPFCustomControlLibrary">
<Style TargetType="{x:Type local:MultiStateSelectionGrid}">
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<WrapPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="ItemTemplate">
<Setter.Value>
<DataTemplate>
<Border BorderBrush="Black" BorderThickness="1">
<TextBlock Text="{Binding Code}" Foreground="Black" Background="White" MinHeight="12" MinWidth="50" Padding="2" ToolTip="{Binding Description}"/>
</Border>
</DataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type local:MultiStateSelectionGrid}">
<StackPanel HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,0,0,0" Background="{TemplateBinding Background}">
<ContentPresenter HorizontalAlignment="Left" VerticalAlignment="Top" Margin="0,0,0,0" Content="{TemplateBinding Content}"/>
<ItemsPresenter/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>
而且贫血代码隐藏,以及:
namespace SourceMedicalWPFCustomControlLibrary
{
public class MultiStateSelectionGridState
{
public Brush Background { get; set; }
public Brush Foreground { get; set; }
public Brush Border { get; set; }
public string Text { get; set; }
public MultiStateSelectionGridState()
{
Background = Brushes.White;
Foreground = Brushes.Black;
Border = Brushes.Black;
Text = String.Empty;
}
};
public class MultiStateSelectionGrid : Selector
{
public static readonly DependencyProperty ContentProperty =
DependencyProperty.Register("Content", typeof(object), typeof(MultiStateSelectionGrid),
new FrameworkPropertyMetadata(null,
FrameworkPropertyMetadataOptions.AffectsRender |
FrameworkPropertyMetadataOptions.AffectsParentMeasure));
public object Content
{
get { return (object)GetValue(ContentProperty); }
set { SetValue(ContentProperty, value); }
}
public static readonly DependencyProperty StatesProperty =
DependencyProperty.Register("States", typeof(List<MultiStateSelectionGridState>), typeof(MultiStateSelectionGrid),
new FrameworkPropertyMetadata(new List<MultiStateSelectionGridState>(),
FrameworkPropertyMetadataOptions.AffectsRender));
public List<MultiStateSelectionGridState> States
{
get { return (List<MultiStateSelectionGridState>)GetValue(StatesProperty); }
set { SetValue(StatesProperty, value); }
}
static MultiStateSelectionGrid()
{
DefaultStyleKeyProperty.OverrideMetadata(typeof(MultiStateSelectionGrid), new FrameworkPropertyMetadata(typeof(MultiStateSelectionGrid)));
}
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
this.SelectionChanged += new SelectionChangedEventHandler(MultiStateSelectionGrid_SelectionChanged);
}
void MultiStateSelectionGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
MessageBox.Show("Hi");
}
}
}
欢迎来到堆栈溢出。我们需要更多的细节,什么是你的控制的完整xaml和背后的代码,或者如果使用mvvm查看模型? – 2013-04-25 04:47:38
根据我对选择器类的理解,如果你从它中派生出来,那么选择事件需要由你自己来处理,无论是通过鼠标点击,触摸还是键盘。如果你想有一个已经实现的选择事件,可以使用listview或者listbox。 CMIIW。 – dnr3 2013-04-25 06:51:51
@ dnr3那么,使用Selector类的关键就在于它具有所有成员变量来支持选择?这似乎有点无用。 – BillyD 2013-04-25 13:10:51