Windows8创建联动菜单

最终效果：

除了第一个Conferences，其余的Western, Pacific和Lakers都会随前面的ListBox选择的变化而变化。在选定一名球员后，下方会显示该球员球衣号码和位置。

 

程序所用到的类：

   1:  public class Conference
   2:      {
   3:          public Conference()
   4:          {
   5:              Divisions = new List<Division>();
   6:          }
   7:          public string Name { get; set; }
   8:          public List<Division> Divisions { get; set; }
   9:      }
  10:
  11:
  12:  public class Division
  13:      {
  14:          public Division()
  15:          {
  16:              Teams = new List<Team>();
  17:          }
  18:          public string Name { get; set; }
  19:          public Conference ConferenceIn { get; set; }
  20:          public List<Team> Teams { get; set; }
  21:      }
  22:
  23:
  24:  public class Team
  25:      {
  26:          public Team()
  27:          {
  28:              Players = new List<Player>();
  29:          }
  30:          public string Name { get; set; }
  31:          public Division DivisionIn { get; set; }
  32:          public List<Player> Players { get; set; }
  33:      }
  34:
  35:
  36:  public class Player
  37:      {
  38:          public string Name { get; set; }
  39:          public int Number { get; set; }
  40:          public Position PositionInTeam { get; set; }
  41:          public Team TeamIn { get; set; }
  42:      }
  43:
  44:
  45:  public enum Position { C, PF, SF, SG, PG };

核心类：

CollectionViewSource Class

 

关键点：

创建多个CollectionViewSource对象并将它们联系在一起。

请看代码：

   1:  <Page.Resources>
   2:          <sampleData:NBAData x:Key="NBALeague"/>
   3:          <CollectionViewSource x:Name="ConferenceList" Source="{StaticResource NBALeague}"/>
   4:          <CollectionViewSource x:Name="DivisionList" Source="{Binding Divisions, Source={StaticResource ConferenceList}}"/>
   5:          <CollectionViewSource x:Name="TeamList" Source="{Binding Teams, Source={StaticResource DivisionList}}"/>
   6:          <CollectionViewSource x:Name="PlayerList" Source="{Binding Players, Source={StaticResource TeamList}}"/>
   7:          <Style TargetType="TextBlock">
   8:              <Setter Property="FontSize" Value="20"/>
   9:          </Style>
  10:          <local:EnumToStringConverter x:Key="PositionConverter"/>
  11:      </Page.Resources>

由于示例数据在另一个project，首先将整个示例数据集合引入，NBAData为一个List<Conference>集合；

创建多个CollectionViewSource实例并将它们联系在一起，这也是本例关键所在。

 

页面XAML代码：

   1:  <Grid Background="{StaticResource ApplicationPageBackgroundThemeBrush}">
   2:          <StackPanel Orientation="Vertical" Margin="30">
   3:          <StackPanel Orientation="Horizontal" Margin="10">
   4:              <StackPanel Orientation="Vertical" Margin="5">
   5:                  <TextBlock Text="Conferences" Margin="5"/>
   6:                  <ListBox ItemsSource="{Binding  Source={StaticResource ConferenceList}}" DisplayMemberPath="Name"/>
   7:              </StackPanel>
   8:
   9:              <StackPanel Orientation="Vertical" Margin="5">
  10:                  <TextBlock Text="{Binding Name, Source={StaticResource ConferenceList}}" Margin="5"/>
  11:                  <ListBox ItemsSource="{Binding Source={StaticResource DivisionList}}" DisplayMemberPath="Name"/>
  12:              </StackPanel>
  13:
  14:              <StackPanel Orientation="Vertical" Margin="5">
  15:                  <TextBlock Text="{Binding Name,Source={StaticResource DivisionList}}" Margin="5"/>
  16:                  <ListBox ItemsSource="{Binding Source={StaticResource TeamList}}" DisplayMemberPath="Name"/>
  17:              </StackPanel>
  18:
  19:              <StackPanel Orientation="Vertical" Margin="5">
  20:                  <TextBlock Text="{Binding Name,Source={StaticResource TeamList}}" Margin="5"/>
  21:                  <ListBox ItemsSource="{Binding Source={StaticResource PlayerList}}" DisplayMemberPath="Name"/>
  22:              </StackPanel>
  23:
  24:          </StackPanel>
  25:
  26:              <StackPanel Orientation="Horizontal" Margin="10">
  27:                  <TextBlock Text="Number:" Margin="5"/>
  28:                  <TextBlock Text="{Binding Number, Source={StaticResource PlayerList}}" Margin="5"/>
  29:                  <TextBlock Text="Position:" Margin="5"/>
  30:                  <TextBlock Text="{Binding PositionInTeam, Source={StaticResource PlayerList}, Converter={StaticResource PositionConverter}}" Margin="5"/>
  31:              </StackPanel>
  32:
  33:              </StackPanel>
  34:      </Grid>