标签：bind border 注意 script div contain xaml 如何 eval
WPF 的 ItemsControl 数据绑定中，有时会遇到绑定的数据源是多种类型，并且需要对不同类型使用不同的模板。这个时候就需要用到 ItemTemplateSelector。
ItemTemplateSelector 是 DataTemplateSelector 类型，通常需要定义一个类继承 DataTemplateSelector。
注意，下面代码关键之处在于定义了 DataTemplate 类型的属性，并在 XAML 中设置其值，避免寻找资源。
public class ValueEditorTemplateSelector : DataTemplateSelector
{
public DataTemplate StandardTemplate
{
get { return this.standardTemplate; }
set { this.standardTemplate = value; }
}
public DataTemplate EnumTemplate
{
get { return this.enumTemplate; }
set { this.enumTemplate = value; }
}
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
PropertyInformation property = (PropertyInformation)item;
if (property.PropertyType.IsEnum)
return EnumTemplate;
return StandardTemplate;
}
}
<my:ValueEditorTemplateSelector x:Key="EditorSelector"> <my:ValueEditorTemplateSelector.StandardTemplate> <DataTemplate> <DockPanel> <editors:MouseWheelValueEditor/> <my:StandardValueEditor PropertyType="{Binding PropertyType}" Value="{Binding Value, Mode=TwoWay}" DescriptiveValue="{Binding DescriptiveValue, Mode=OneWay}" IsSelected="{Binding IsSelected, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListViewItem}}}" IsEditable="{Binding CanEdit}" PropertyInfo="{Binding}"/> <Border/> </DockPanel> </DataTemplate> </my:ValueEditorTemplateSelector.StandardTemplate> <my:ValueEditorTemplateSelector.EnumTemplate> <DataTemplate> <DockPanel> <editors:MouseWheelValueEditor/> <my:EnumValueEditor PropertyType="{Binding PropertyType}" Value="{Binding Value, Mode=TwoWay}" DescriptiveValue="{Binding DescriptiveValue, Mode=OneWay}" IsSelected="{Binding IsSelected, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type ListViewItem}}}" IsEditable="{Binding CanEdit}" PropertyInfo="{Binding}"/> <Border/> </DockPanel> </DataTemplate> </my:ValueEditorTemplateSelector.EnumTemplate> </my:ValueEditorTemplateSelector>
标签：bind border 注意 script div contain xaml 如何 eval
原文地址：http://www.cnblogs.com/pengzhong/p/howtouseitemtemplateselector.html
