Grouping data in a Silverlight DataGrid

   1: using System.Collections.Generic;

   2:  

   3: namespace DataGridGroupingUpdated

   4: {

   5:     public class Person

   6:     {

   7:         public string FirstName { get; set; }

   8:         public string LastName { get; set; }

   9:         public string Gender { get; set; }

  10:         public string AgeGroup { get; set; }

  11:     }

  12:  

  13:     public class People

  14:     {

  15:         public static List<Person> GetPeople()

  16:         {

  17:             List<Person> peeps = new List<Person>();

  18:             peeps.Add(new Person() { FirstName = "Tim", LastName = "Heuer", Gender = "M", AgeGroup = "Adult" });

  19:             peeps.Add(new Person() { FirstName = "Lisa", LastName = "Heuer", Gender = "F", AgeGroup = "Adult" });

  20:             peeps.Add(new Person() { FirstName = "Zoe", LastName = "Heuer", Gender = "F", AgeGroup = "Kid" });

  21:             peeps.Add(new Person() { FirstName = "Zane", LastName = "Heuer", Gender = "M", AgeGroup = "Kid" });

  22:             return peeps;

  23:         }

  24:     }

  25: }

   1: <UserControl x:Class="DataGridGroupingUpdated.MainPage"

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

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

   4:     xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 

   5:     xmlns:datacontrols="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data"

   6:     mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">

   7:     <Grid x:Name="LayoutRoot">

   8:         <StackPanel>

   9:             <StackPanel Orientation="Horizontal">

  10:                 <TextBlock Text="Group:" Margin="0,0,10,0" />

  11:                 <ComboBox x:Name="GroupNames" SelectionChanged="GroupNames_SelectionChanged">

  12:                     <ComboBox.Items>

  13:                         <ComboBoxItem Content="AgeGroup" IsSelected="True" />

  14:                         <ComboBoxItem Content="Gender" />

  15:                     </ComboBox.Items>

  16:                 </ComboBox>

  17:             </StackPanel>

  18:             <datacontrols:DataGrid x:Name="PeopleList" />

  19:         </StackPanel>

  20:     </Grid>

  21: </UserControl>

   1: PagedCollectionView pcv = null;

   2:  

   3: public MainPage()

   4: {

   5:     InitializeComponent();

   6:     Loaded += new RoutedEventHandler(MainPage_Loaded);

   7: }

   8:  

   9: void MainPage_Loaded(object sender, RoutedEventArgs e)

  10: {

  11:     pcv = new PagedCollectionView(People.GetPeople());

  12:     pcv.GroupDescriptions.Add(new PropertyGroupDescription("AgeGroup"));

  13:  

  14:     PeopleList.ItemsSource = pcv;

  15: }

   1: private void GroupNames_SelectionChanged(object sender, SelectionChangedEventArgs e)

   2: {

   3:     if (pcv != null)

   4:     {

   5:         // comment this next line out to see

   6:         // adding additional groupings.

   7:         pcv.GroupDescriptions.Clear();

   8:         ComboBoxItem itm = (ComboBoxItem)GroupNames.SelectedItem;

   9:         pcv.GroupDescriptions.Add(new PropertyGroupDescription(itm.Content.ToString()));

  10:     }

  11: }