在实际应用中,我们常常会遇到创建菜单树的情况,而Silverlight的TreeView有时候不能满足要求,在这里我们将使用Accordion模拟一个效果比较好的菜单。
在本节中,我们使用绑定的方式来动态的显示ObservableCollection数据源集合。
首先我们需要在项目中引入System.Windows.Controls.Toolkit.dll和 System.Windows.Controls.Layout.Toolkit.dll两个DLL文件。然后再XAML和XAML.CS代码中引用他 们。
然后我们开始准备数据源部分,首先我们声明两个实体类,Catalog类和TestSimple类。其中Catalog类有一个属性为 TestSimple类的集合(通俗的说就是Catalog类的一个属性是多个TestSimple类对象的实体)。Catalog类是一级菜 单,TestSimple类是二级菜单,所以一级菜单除了自己需要名字之外,还需要有多个二级菜单项。在这里,我们贴出数据源的两个实体类代码如下:
- /// <summary>
- /// 一级菜单
- /// </summary>
- public class Catalog
- {
- public Catalog()//实例化本类的时候,调用本构造函数让初始化TestSimples属性
- {
- TestSimples = new ObservableCollection<TestSimple>();
- }
- public string CatalogName { get; set; } //一级菜单名称
- public ObservableCollection<TestSimple> TestSimples { get; set; }//二级菜单项的集合。
- }
- /// <summary>
- /// 二级菜单项
- /// </summary>
- public class TestSimple
- {
- public string Name { get; set; } //二级菜单名称
- public string TestID { get; set; } //二级菜单ID
- }
声明了这两个实体类之后,我们需要构造数据源集合,然后绑定到Accordion菜单,其关键代码如下:
- ObservableCollection<Catalog> catalogsk = new ObservableCollection<Catalog>();
- string BlackStr = " ";
- catalogsk.Add(
- new Catalog()
- {
- CatalogName = "配置菜单",
- TestSimples = new ObservableCollection<TestSimple>()
- {
- new TestSimple(){Name=BlackStr+"系统配置",TestID="configSystem"},
- new TestSimple(){Name=BlackStr+"用户配置",TestID="configUser"},
- new TestSimple(){Name=BlackStr+"日志配置",TestID="configCatalog"},
- new TestSimple(){Name=BlackStr+"网络配置",TestID="configNetwork"},
- }
- }
- );
- catalogsk.Add(
- new Catalog()
- {
- CatalogName = "查询菜单",
- TestSimples = new ObservableCollection<TestSimple>()
- {
- new TestSimple(){Name=BlackStr+"查询成绩",TestID="SearchSystem"},
- new TestSimple(){Name=BlackStr+"查询日志",TestID="SearchUser"},
- new TestSimple(){Name=BlackStr+"查询新闻",TestID="SearchNews"},
- new TestSimple(){Name=BlackStr+"查询数目",TestID="SearchNumber"},
- new TestSimple(){Name=BlackStr+"查询地理",TestID="SearchAddr"},
- new TestSimple(){Name=BlackStr+"查询书籍",TestID="SearchProgram"},
- }
- }
- );
- catalogsk.Add(
- new Catalog()
- {
- CatalogName = "修改菜单",
- TestSimples = new ObservableCollection<TestSimple>()
- {
- new TestSimple(){Name=BlackStr+"查询成绩",TestID="EditSystem"},
- new TestSimple(){Name=BlackStr+"修改日志",TestID="EditUser"},
- new TestSimple(){Name=BlackStr+"修改新闻",TestID="EditNews"},
- new TestSimple(){Name=BlackStr+"修改数目",TestID="EditNumber"},
- new TestSimple(){Name=BlackStr+"修改地理",TestID="EditAddr"},
- new TestSimple(){Name=BlackStr+"修改书籍",TestID="EditProgram"},
- }
- }
- );
- theList.ItemsSource = catalogsk;
我们再贴出XAML关键代码即可。在这里
- <layoutToolkit:Accordion x:Name="theList" SelectionMode="ZeroOrMore" Grid.Column="0" HorizontalAlignment="Left" VerticalAlignment="Top" Width="200" Margin="5" BorderBrush="#FF849AAD" Height="Auto" BorderThickness="1">
- <layoutToolkit:Accordion.ItemTemplate>
- <DataTemplate>
- <StackPanel>
- <TextBlock Text="{Binding Name}" />
- </StackPanel>
- </DataTemplate>
- </layoutToolkit:Accordion.ItemTemplate>
- <layoutToolkit:Accordion.ContentTemplate>
- <DataTemplate>
- <ListBox ItemsSource="{Binding TestSimples}" BorderThickness="0" Width="200" HorizontalAlignment="Stretch">
- <ListBox.ItemTemplate>
- <DataTemplate>
- <TextBlock Text="{Binding Name}" Tag="{Binding TestID}" MouseLeftButtonDown="TextBlock_MouseLeftButtonDown"/>
- </DataTemplate>
- </ListBox.ItemTemplate>
- </ListBox>
- </DataTemplate>
- </layoutToolkit:Accordion.ContentTemplate>
- </layoutToolkit:Accordion>
其中SelectionMode="ZeroOrMore"是设置本菜单的可以打开0个一级菜单也可以同时打开多个菜单项。 Accordion.ItemTemplate是一级菜单的绑定列,Accordion.ContentTemplate是二级菜单的绑定列,在这里,二 级菜单里面我们再内嵌了一个ListBox,然后这个ListBox再绑定了一个TextBlock列,并且这个列还有一个鼠标点击事件,在这个事件里面 弹出触发事件的TextBlock的Tag标签值。通过这个标签值,我们可以控制点击菜单某项之后显示什么页面。
至此,我们使用Accordion控件模拟了一个菜单,并且可以根据数据源自动生成菜单项。在这里我们贴出完整的源代码如下:
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:layoutToolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Layout.Toolkit"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<layoutToolkit:Accordion x:Name="theList" SelectionMode="ZeroOrMore" Grid.Column="0" HorizontalAlignment="Left" VerticalAlignment="Top" Width="200" Margin="5" BorderBrush="#FF849AAD" Height="Auto" BorderThickness="1">
<layoutToolkit:Accordion.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding CatalogName}" />
</StackPanel>
</DataTemplate>
</layoutToolkit:Accordion.ItemTemplate>
<layoutToolkit:Accordion.ContentTemplate>
<DataTemplate>
<ListBox ItemsSource="{Binding TestSimples}" BorderThickness="0" Width="200" HorizontalAlignment="Stretch">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}" Tag="{Binding TestID}" MouseLeftButtonDown="TextBlock_MouseLeftButtonDown"/>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</DataTemplate>
</layoutToolkit:Accordion.ContentTemplate>
</layoutToolkit:Accordion>
</Grid>
</UserControl>