【转】wpf 模板选择器DataTemplateSelector及动态绑定，DataTemplate.Triggers触发器的使用

通常，如果有多个 DataTemplate 可用于同一类型的对象，并且您希望根据每个数据对象的属性提供自己的逻辑来选择要应用的 DataTemplate，则应创建 DataTemplateSelector。请注意，如果具有不同类型的对象，则可以对 DataTemplate 设置 DataType 属性。如果您执行了此操作，则无需创建 DataTemplateSelector。此外，如果对象类型相同但属性不同，也可以考虑使用 DataTrigger 或数据转换器。
通俗讲，就是根据不同的数据选择不同的模板。接下来，我用一个例子来讲述DataTemplateSelector和动态绑定的使用方法。

下面例子如图，只要年龄大于50的使用一种模板，否则另一种模板，并在年龄大于50的模板中是男性的添加触发器使用背景变成蓝色的。

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" alt="" />

1、创建模板选择器

public class MyDataTemplateSelector : DataTemplateSelector
    {
        public override DataTemplate SelectTemplate(object item, DependencyObject container)
        {
            var fe = container as FrameworkElement;
            var obj = item as Person;
            DataTemplate dt = null;
            if (obj != null && fe != null)
            {
                if (obj.age > )
                    dt = fe.FindResource("one") as DataTemplate;
                else
                    dt = fe.FindResource("two") as DataTemplate;

            }
            return dt;
        }
    }

2、界面设计：

<Window x:Class="WpfApplication5.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication5"
        Title="MainWindow" Height="" Width="">
    <Window.Resources>
        <local:MyDataTemplateSelector  x:Key="mydt"></local:MyDataTemplateSelector>
        <DataTemplate x:Key="one">
            <Border BorderThickness="" BorderBrush="red" Background="AliceBlue">
                <StackPanel Orientation="Horizontal" Name="skp" >
                    <TextBlock Text="{Binding name}" Margin=""></TextBlock>
                    <TextBlock Text="{Binding age}" Margin=""></TextBlock>
                    <TextBlock Text="{Binding sex}" Margin=""></TextBlock>
                </StackPanel>
            </Border>
            <DataTemplate.Triggers>
                <DataTrigger  Value="男" Binding="{Binding Path=sex}">
                    <Setter TargetName="skp" Property="Background" Value="CornflowerBlue" />
                </DataTrigger>
            </DataTemplate.Triggers>
        </DataTemplate>
        <DataTemplate x:Key="two" >
            <Border BorderThickness="" BorderBrush="Blue" Background="YellowGreen" Padding="" >
                <StackPanel Orientation="Horizontal">
                    <TextBlock Text="{Binding name}"  Margin=""></TextBlock>
                    <TextBlock Text="{Binding age}" Margin=""></TextBlock>
                    <TextBlock Text="{Binding sex}" Margin=""></TextBlock>
                </StackPanel>
            </Border>
        </DataTemplate>
    </Window.Resources>
    <Grid>
        <ListBox Name="lb" ItemTemplateSelector="{StaticResource mydt}">

        </ListBox>
    </Grid>
</Window>

3、后台：

public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            LoadData();
            lb.ItemsSource = list;
        }
        public List<Person> list { get; set; }
        public void LoadData()
        {
            Random r = new Random();
            list = new List<Person>();
            for (int i = ; i < ; i++)
            {
                list.Add(new Person
                {
                    name = "张三" + i,
                    age = r.Next()
                });
            }
        }
    }
    public class Person
    {
        public string name { get; set; }
        public int age { get; set; }

    }

原文地址：https://www.cnblogs.com/lunawzh/p/5983069.html