Jesse Liberty - Silverlight Geek

   1: <UserControl x:Class="MultiSelectLB.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"

   5:   xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

   6:   mc:Ignorable="d"

   7:   Width="500"

   8:   Height="280">

   9:   <Grid x:Name="LayoutRoot"

  10:         Background="wheat"

  11:         Margin="10">

  12:     <Grid.ColumnDefinitions>

  13:       <ColumnDefinition Width="1*" />

  14:       <ColumnDefinition Width="1*" />

  15:     </Grid.ColumnDefinitions>

  16:     <Grid.RowDefinitions>

  17:       <RowDefinition Height="1.5*" />

  18:       <RowDefinition Height="1*" />

  19:       <RowDefinition Height="1*" />

  20:       <RowDefinition Height="*" />

  21:     </Grid.RowDefinitions>

  22:     

  23:     <TextBlock x:Name="Title"

  24:       Margin="0"

  25:       Text="Multi-select List Box"

  26:       Foreground="Red"

  27:       FontFamily="Georgia"

  28:       FontSize="32"

  29:       HorizontalAlignment="Center"

  30:       VerticalAlignment="Center"

  31:       Grid.ColumnSpan="2" />

  32:     

  33:     <ListBox x:Name="msLB"

  34:       Margin="5"

  35:       Grid.Row="1"

  36:       Grid.Column="0"

  37:       SelectionMode="Multiple" />

  38:     

  39:     <Button x:Name="readyButton"

  40:        Margin="5"

  41:        Grid.Row="1"

  42:        Grid.Column="1"

  43:        Width="100"

  44:        Height="35"

  45:        Content="Click when ready" />

  46:     

  47:     <TextBlock x:Name="Message"

  48:         HorizontalAlignment="Left"

  49:         Margin="5"

  50:         Grid.Row="2"

  51:         Grid.Column="0"

  52:         Grid.ColumnSpan="2"

  53:         Foreground="Blue"

  54:         VerticalAlignment="Bottom"

  55:         FontFamily="Georgia"

  56:         FontSize="18" />

  57:     

  58:   </Grid>

  59: </UserControl>

   1: using System.Collections.Generic;

   2: using System.Windows.Controls;

   3:  

   4: namespace MultiSelectLB

   5: {

   6:    public partial class MainPage : UserControl

   7:    {

   8:       private readonly List<string> presidents =

   9:          new List<string> { "Washington", "Lincoln", "FDR", "Kennedy", "Obama" };

  10:       public MainPage()

  11:       {

  12:          InitializeComponent();

  13:          msLB.ItemsSource = presidents;

  14:          readyButton.Click += BClick;

  15:       }

  16:  

  17:       private void BClick(object sender, System.Windows.RoutedEventArgs e)

  18:       {

  19:          var selectedPresidents = msLB.SelectedItems;

  20:          Message.Text = string.Empty;

  21:          foreach (string presidentName in selectedPresidents)

  22:          {

  23:             if (Message.Text.Length > 0)

  24:             {

  25:                Message.Text += ", ";

  26:             }

  27:             Message.Text += presidentName;

  28:          }     // end foreach

  29:       }        // end BClick

  30:    }           // end class

  31: }              // end namespace