Data Trigger Sample

   
  

<Window x:Class="DataTriggerSample.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  xmlns:c="clr-namespace:DataTriggerSample"
  Title="DataTriggerSample" Height="300" Width="300">
  <Window.Resources>
    <c:People x:Key="PeopleData"/>
    <Style TargetType="{x:Type ListBoxItem}">
      <Style.Triggers>
        <DataTrigger Binding="{Binding Path=RelationshipType}" Value="Family">
          <Setter Property="Background" Value="Yellow" />
        </DataTrigger>
        <DataTrigger Binding="{Binding Path=RelationshipType}" Value="Friend">
          <Setter Property="Background" Value="Pink" />
        </DataTrigger>
        <MultiDataTrigger>
          <MultiDataTrigger.Conditions>
            <Condition Binding="{Binding Path=Name}" Value="A" />
            <Condition Binding="{Binding Path=RelationshipType}" Value="Best Friend" />
          </MultiDataTrigger.Conditions>
          <MultiDataTrigger.Setters>
            <Setter Property="Background" Value="LightGreen" />
          </MultiDataTrigger.Setters>
        </MultiDataTrigger>
      </Style.Triggers>
    </Style>

    <DataTemplate DataType="{x:Type c:Person}">
      <Canvas Width="260" Height="20">
        <TextBlock FontSize="12" Width="130" Canvas.Left="0" Text="{Binding Path=Name}"/>
        <TextBlock FontSize="12" Width="130"  Canvas.Left="130" Text="{Binding Path=RelationshipType}"/>
      </Canvas>
    </DataTemplate>
  </Window.Resources>

  <StackPanel>
    <TextBlock FontSize="18" FontWeight="Bold" HorizontalAlignment="Center">Data Trigger Sample</TextBlock>
    <ListBox Width="250" HorizontalAlignment="Center" Background="White" ItemsSource="{Binding Source={StaticResource PeopleData}}"/>
  </StackPanel>

</Window>

//File:Window.xaml.cs

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.Collections.ObjectModel;

namespace DataTriggerSample
{
    public partial class Window1 : System.Windows.Window
    {
        public Window1()
        {
            InitializeComponent();
        }
    }
    public class Person
    {
        private string _name;
        private string _relationshipType;

        public string Name
        {
            get { return _name; }
            set { _name = value; }
        }

        public string RelationshipType
        {
            get { return _relationshipType; }
            set { _relationshipType = value; }
        }

        public Person(string name, string relationshiptype)
        {
            this._name = name;
            this._relationshipType = relationshiptype;
        }
    }

    public class People : ObservableCollection<Person>
    {
        public People()
        {
            Add(new Person("A", "Friend"));
            Add(new Person("C", "Family"));
            Add(new Person("B", "Friend"));
        }
    }

}