using System;

using System.Collections.Generic;

using System.Linq;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Markup;

namespace Itm.Windows.Controls

{

    /// <summary>

    /// Choses a approperiate data template for the object from the internal collection.

    /// </summary>

    [ContentProperty("Templates")]

    public class DataTypeTemplateSelector : DataTemplateSelector

    {

        #region Private Static Fields

        /// <summary>

        /// Collection of available data templates.

        /// </summary>

        private readonly List<DataTemplate> templates = new List<DataTemplate>();

        #endregion

        #region Public Properties

        /// <summary>

        /// Gets the collection of available data templates.

        /// </summary>

        /// <value>The collection of available data templates.</value>

        public List<DataTemplate> Templates

        {

            get

            {

                return templates;

            }

        }

        #endregion

        #region Public Methods

        /// <summary>

        /// When overridden in a derived class, returns a <see cref="DataTemplate"/> based on custom logic.

        /// </summary>

        /// <param name="item">The data object for which to select the template.</param>

        /// <param name="container">The data-bound object.</param>

        /// <returns>

        /// Returns a <see cref="DataTemplate"/> or null. The default value is null.

        /// </returns>

        public override DataTemplate SelectTemplate(object item, DependencyObject container)

        {

            if (item != null)

            {

                Type type = item.GetType();

                DataTemplate dataTemplate = templates.FirstOrDefault(d => d.DataType == type);

                if (dataTemplate != null)

                {

                    return dataTemplate;

                }

            }

            return base.SelectTemplate(item, container);

        }

        #endregion

    }

}

<Window x:Class="DataTemplateSelectorBlog.Window1"

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:loc="clr-namespace:DataTemplateSelectorBlog"

        xmlns:itm="clr-namespace:Itm.Windows.Controls"

        Title="Window1"

        Height="300"

        Width="300"

        x:Name="MineWindow">

    <Grid>

        <ListView  ItemsSource="{Binding ElementName=MineWindow, Path=Items}">

            <ListView.ItemTemplateSelector>

                <itm:DataTypeTemplateSelector>

                    <DataTemplate DataType="{x:Type loc:Order}">

                        <GroupBox Header="Order"

                                  BorderBrush="Red">

                            <StackPanel>

                                <TextBlock Foreground="Blue"

                                           Text="{Binding Path=Client, StringFormat=Client: {0} }"></TextBlock>

                                <TextBlock Foreground="Black"

                                           Text="{Binding Path=Product}"></TextBlock>

                                <TextBlock Foreground="DarkGray"

                                           Text="{Binding Path=Price}"></TextBlock>

                            </StackPanel>

                        </GroupBox>

                    </DataTemplate>

                    <DataTemplate DataType="{x:Type loc:Message}">

                        <GroupBox Header="Message">

                            <StackPanel>

                                <TextBlock Foreground="Blue"

                                           Text="{Binding Path=From, StringFormat=From: {0} }"></TextBlock>

                                <TextBlock Foreground="DarkGray"

                                           Text="{Binding Path=Text}"></TextBlock>

                            </StackPanel>

                        </GroupBox>

                    </DataTemplate>

                </itm:DataTypeTemplateSelector>

            </ListView.ItemTemplateSelector>

        </ListView>

    </Grid>

</Window>