"TreeView"数据绑定
在“Accordion控件”下使用了“TreeView”控件，但在对“TreeView控件”进行绑定时出现了问题。
一、XAML代码：
<ComboBox Height="23" HorizontalAlignment="Left" Margin="242,12,0,0" Name="comboBox2" VerticalAlignment="Top" Width="120" >
<ComboBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="请选择" />
</StackPanel>
</DataTemplate>
</ComboBox.ItemTemplate>
<ComboBoxItem>
<layoutToolkit:Accordion x:Name="theTreeView" 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>
<sdk:TreeView x:Name="TreeOfLife" Margin="5" Grid.Column="0" Grid.Row="1">
</sdk:TreeView>
问题一：“TreeView”位于“Accordion”中，“x:Name”不能这样指定吧？ 就算指定了（比如这里），后台代码“TreeOfLife.Items.Add(objTreeNode);”也提示找不到“TreeOfLife”，为什么？
问题二：“x:Name”不能进行绑定是么？ x:Name=“{Binding Name}”，这样绑定提示错误。那改怎样将“Name”属性绑定到“TreeView”呢？？？ 方便在后台代码中获取该“TreeView”元素，进行数据绑定。
问题三：如何定义"Accordion"下每个“TreeView”元素的节点单击事件，方便处理？
</DataTemplate>
</layoutToolkit:Accordion.ContentTemplate>
</layoutToolkit:Accordion>
</ComboBoxItem>
</ComboBox>
二、后台代码：
namespace CustomMenu
{
public partial class ComboList : UserControl
{
List<ForumInfo> forumList = new List<ForumInfo>();
public ComboList()
{
InitializeComponent();
BindDataSource();
}
public void BindDataSource()
{
ObservableCollection<Catalog> catalogsk = new ObservableCollection<Catalog>();
string BlackStr = "";
catalogsk.Add(
new Catalog()
{
CatalogName = "建筑一",
TestSimples = new ObservableCollection<TestSimple>()
{
new TestSimple(){Name=BlackStr+"楼层一",TestID="1001"},
new TestSimple(){Name=BlackStr+"楼层二",TestID="1002"},
new TestSimple(){Name=BlackStr+"楼层三",TestID="1003"},
new TestSimple(){Name=BlackStr+"楼层四",TestID="1004"},
}
}
);
catalogsk.Add(
new Catalog()
{
CatalogName = "建筑二",
TestSimples = new ObservableCollection<TestSimple>()
{
new TestSimple(){Name=BlackStr+"楼层一",TestID="2001"},
new TestSimple(){Name=BlackStr+"楼层二",TestID="2002"},
new TestSimple(){Name=BlackStr+"楼层三",TestID="2003"},
new TestSimple(){Name=BlackStr+"楼层四",TestID="2004"},
new TestSimple(){Name=BlackStr+"楼层五",TestID="2005"},
new TestSimple(){Name=BlackStr+"楼层六",TestID="2006"},
}
}
);
catalogsk.Add(
new Catalog()
{
CatalogName = "建筑三",
TestSimples = new ObservableCollection<TestSimple>()
{
new TestSimple(){Name=BlackStr+"楼层一",TestID="3001"},
new TestSimple(){Name=BlackStr+"楼层二",TestID="3002"},
new TestSimple(){Name=BlackStr+"楼层三",TestID="3003"},
new TestSimple(){Name=BlackStr+"楼层四",TestID="3004"},
new TestSimple(){Name=BlackStr+"楼层五",TestID="3005"},
new TestSimple(){Name=BlackStr+"楼层六",TestID="3006"},
}
}
);
theTreeView.ItemsSource = catalogsk;
try
{
forumList =CustomMenu.DateService.GetForumData();
AddTreeNode(0, null);
}
catch
{
throw new NotImplementedException();
}
}
private void TextBlock_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
TextBlock tb = sender as TextBlock;
MessageBox.Show(tb.Tag.ToString());
}
private void AddTreeNode(int parentID, TreeViewItem treeViewItem)
{
List<ForumInfo> result = (from forumInfo in forumList
where forumInfo.ParendID == parentID
select forumInfo).ToList<ForumInfo>();
if (result.Count > 0)
{
foreach (ForumInfo foruminfo in result)
{
TreeViewItem objTreeNode = new TreeViewItem();
objTreeNode.Header = foruminfo.ForumName;
objTreeNode.DataContext = foruminfo;
//此样式将会添加的所有叶子结点上
objTreeNode.ItemContainerStyle = this.Resources["RedItemStyle"] as Style;
//objTreeNode.IsSelected = true;
//objTreeNode.IsEnabled = false;
//objTreeNode.IsExpanded = true;
//添加根节点
if (treeViewItem == null)
{
//TreeOfLife.Items.Add(objTreeNode);
}
else
{
treeViewItem.Items.Add(objTreeNode);
}
AddTreeNode(foruminfo.ForumID, objTreeNode);
}
}
}
public class Catalog
{
public Catalog()
{
TestSimples = new ObservableCollection<TestSimple>();
}
public string CatalogName { get; set; }
public ObservableCollection<TestSimple> TestSimples { get; set; }
}
public class TestSimple
{
public string Name { get; set; }
public string TestID { get; set; }
}
}
public class ForumInfo
{
public int ForumID { get; set; }
public int ParendID { get; set; }
public string ForumName { get; set; }
}
public class DateService
{
public static List<ForumInfo> GetForumData()
{
List<ForumInfo> forumList = new List<ForumInfo>();
forumList.Add(new ForumInfo() { ForumID = 1, ParendID = 0, ForumName = "笔记本版块" });
forumList.Add(new ForumInfo() { ForumID = 2, ParendID = 0, ForumName = "台式机版块" });
forumList.Add(new ForumInfo() { ForumID = 3, ParendID = 1, ForumName = "Dell笔记本" });
forumList.Add(new ForumInfo() { ForumID = 4, ParendID = 1, ForumName = "IBM笔记本" });
forumList.Add(new ForumInfo() { ForumID = 5, ParendID = 4, ForumName = "IBM-T系列" });
forumList.Add(new ForumInfo() { ForumID = 6, ParendID = 4, ForumName = "IBM-R系列" });
forumList.Add(new ForumInfo() { ForumID = 7, ParendID = 2, ForumName = "联想台式机" });
forumList.Add(new ForumInfo() { ForumID = 8, ParendID = 2, ForumName = "方正台式机" });
forumList.Add(new ForumInfo() { ForumID = 9, ParendID = 2, ForumName = "HP台式机" });
forumList.Add(new ForumInfo() { ForumID = 10, ParendID = 7, ForumName = "联想家悦H系列" });
forumList.Add(new ForumInfo() { ForumID = 11, ParendID = 7, ForumName = "联想IdeaCentre系列" });
return forumList;
}
}
}
三、绑定之后的图
谢谢，各位侠士们了。。。
[解决办法]
问题一：“TreeView”位于“Accordion”中，“x:Name”不能这样指定吧？ 就算指定了（比如这里），后台代码“TreeOfLife.Items.Add(objTreeNode);”也提示找不到“TreeOfLife”，为什么？
后台代码不能通过控件name获取到模板中的控件
建议使用绑定实现，把一个list绑定到treeview控件，然后操作list的数据，得到你的效果
问题二：“x:Name”不能进行绑定是么？ x:Name=“{Binding Name}”，这样绑定提示错误。那改怎样将“Name”属性绑定到“TreeView”呢？？？ 方便在后台代码中获取该“TreeView”元素，进行数据绑定。
你不需要获取view，mvvm模式中，view依赖viewmodel，vm是不考虑view的。你想做什么在viewmodel中做，然后把对应的属性绑定到view的对应控件上
问题三：如何定义"Accordion"下每个“TreeView”元素的节点单击事件，方便处理？
</DataTemplate>
</layoutToolkit:Accordion.ContentTemplate>
</layoutToolkit:Accordion>
</ComboBoxItem>
</ComboBox>
其实你就是一个问题，使用绑定，一切都可以解决，这个问题相同，使用command即可
[解决办法]
楼上说的对，绑定就可以，如果不喜欢command可以使用treeview的datatemplate里面的控件来写事件，最好是在datatemplate的根元素写事件
