首先我的样式操作：
文件名是：TreeViewStyle
csharp
<Style x:Key="DefaultTreeViewItem" TargetType="{x:Type TreeViewItem}">
<Setter Property="MinHeight" Value="40" />
<Setter Property="Foreground" Value="#333233" />
<!--<Setter Property="Background" Value="#484C7F" />-->
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="Cursor" Value="Hand" />
<Setter Property="Margin" Value="5,0,5,0" />
<Setter Property="FontSize" Value="14" />
<!--<EventSetter Event="PreviewMouseLeftButtonDown" Handler="TreeViewItem_Click" />-->
<!--<Setter Property="local:ControlAttachProperty.FIconSize" Value="19"/>-->
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TreeViewItem}">
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Border x:Name="Bd" Margin="3" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" CornerRadius="4"
BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}"
MinHeight="{TemplateBinding MinHeight}" UseLayoutRounding="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}">
<!--多层级间隔，暂缓-->
<!--<Grid Margin="{Binding Converter={StaticResource LengthConverter}, RelativeSource={x:Static RelativeSource.TemplatedParent}}"-->
<Grid Margin="{TemplateBinding Margin}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="15" />
<ColumnDefinition Width="*" />
<ColumnDefinition MinWidth="18" Width="Auto" />
<ColumnDefinition Width="15" />
</Grid.ColumnDefinitions>
<!--展开收缩按钮-->
<ToggleButton x:Name="ExpanderBtn" Grid.Column="2" HorizontalContentAlignment="Stretch"
IsChecked="{Binding Path=IsExpanded, RelativeSource={x:Static RelativeSource.TemplatedParent}, Mode=TwoWay}"
ClickMode="Press" >
<ToggleButton.Template>
<ControlTemplate TargetType="ToggleButton">
<Border>
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
</Border>
</ControlTemplate>
</ToggleButton.Template>
<ToggleButton.Content>
<TextBlock x:Name="ExpanderIcon" Foreground="#333233" FontFamily="../../Fonts/MyFonts/#iconfont" Grid.Column="1" Text="" FontSize="18" />
<!--FontSize="{TemplateBinding local:ControlAttachProperty.FIconSize}" />-->
</ToggleButton.Content>
</ToggleButton>
<!--内容-->
<ContentPresenter x:Name="PART_Header" Grid.Column="1" ContentSource="Header"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
HorizontalAlignment="Left"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</Grid>
</Border>
<!--<ItemsPresenter Grid.Row="1" Margin="18,0,0,0" x:Name="ItemsHost" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />-->
<Border x:Name="MianBan" Grid.Row="1" CornerRadius="4" Margin="5,0,5,0">
<ItemsPresenter x:Name="ItemsHost"/>
</Border>
<!--Margin="18,0,0,0"-->
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="False">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed" />
</Trigger>
<Trigger Property="IsExpanded" Value="True">
<!--<Setter TargetName="ExpanderIcon" Property="Text" Value="" />-->
<Setter TargetName="ExpanderIcon" Property="Text" Value="" />
</Trigger>
<Trigger Property="HasItems" Value="False">
<Setter TargetName="ExpanderIcon" Property="Visibility" Value="Hidden" />
</Trigger>
<!--<Trigger Property="IsMouseOver" Value="True">
<Setter Property="Background" TargetName="Bd" Value="#60636C" />
<Setter Property="Foreground" TargetName="ExpanderIcon" Value="#FFFFCC" />
<Setter Property="Foreground" Value="#FFFFCC" />
</Trigger>-->
<!--<DataTrigger Binding="{Binding IsGrouping}" Value="1">
<Setter Property="Background" TargetName="MianBan" Value="#E6E7EF" />
</DataTrigger>
<DataTrigger Binding="{Binding IsGrouping}" Value="2">
<Setter Property="Background" TargetName="MianBan" Value="#CFD0D7" />
</DataTrigger>-->
<!--<Trigger Property="IsSelected" Value="True">
<Setter Property="Background" TargetName="Bd" Value="#60636C" />
<Setter Property="Foreground" TargetName="ExpanderIcon" Value="#F9DEC1" />
<Setter Property="Foreground" Value="#F9DEC1" />
</Trigger>-->
<!--<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True" />
<Condition Property="Selector.IsSelectionActive" Value="True" />
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="#60636C" />
<Setter Property="Foreground" TargetName="ExpanderIcon" Value="red" />
<Setter Property="Foreground" Value="#F9DEC1" />
</MultiTrigger>-->
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="True" />
<!--<Condition Property="Selector.IsSelectionActive" Value="True" />-->
</MultiTrigger.Conditions>
<Setter Property="Background" TargetName="Bd" Value="#60636C" />
<Setter Property="Foreground" TargetName="ExpanderIcon" Value="#F9DEC1" />
<Setter Property="Foreground" Value="#F9DEC1" />
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="TypeTreeStyle" TargetType="TreeView">
<Setter Property="ScrollViewer.CanContentScroll" Value="True" />
<Setter Property="VirtualizingStackPanel.IsVirtualizing" Value="True"></Setter>
<Setter Property="VirtualizingStackPanel.VirtualizationMode" Value="Recycling" />
<Setter Property="ScrollViewer.IsDeferredScrollingEnabled" Value="False" />
<Setter Property="Background" Value="Transparent"/>
<Setter Property="Padding" Value="0"/>
<!--<EventSetter Event="PreviewMouseLeftButtonDown" Handler="TreeViewItem_PreviewMouseLeftButtonDown" />-->
<Setter Property="ItemContainerStyle" Value="{StaticResource DefaultTreeViewItem}"></Setter>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<VirtualizingStackPanel IsItemsHost="True" IsVirtualizing="True" VirtualizationMode="Recycling" Margin="0"/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="TreeView">
<ScrollViewer Padding="4" Focusable="False" CanContentScroll="False">
<ItemsPresenter/>
</ScrollViewer>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="TypeNode" TargetType="TreeViewItem">
<Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}"/> <!--如果有这个属性可以通过这属性获取到是否选择的状态-->
<Setter Property="FontWeight" Value="Normal"/>
<Setter Property="IsExpanded" Value="True"/> <!--设置直接展开-->
<Style.Triggers>
<Trigger Property="IsSelected" Value="True">
<Setter Property="FontWeight" Value="Bold"/>
<Setter Property="Background" Value="Brown"/>
</Trigger>
</Style.Triggers>
</Style>
<HierarchicalDataTemplate x:Key="TypeTreeGroup" ItemsSource="{Binding Children}">
<StackPanel Orientation="Horizontal">
<!--<Image Source="/WpfTutorialSamples;component/Images/user.png" Margin="0,0,5,0" />-->
<!--当然这里可以用Image数据来操作 也可以用binding来绑定对应的图片标示-->
<TextBlock Text="{Binding ThisName}" FontSize="13"/>
</StackPanel>
</HierarchicalDataTemplate>我的界面配置：
csharp
<Window.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="/Styles/TreeViewStyle.xaml"></ResourceDictionary>
<ResourceDictionary Source="/Styles/ButtonSetStyle.xaml"></ResourceDictionary>
<!--<ResourceDictionary Source="../../Assets/style/ScrollBarThumbStyle.xaml"></ResourceDictionary>-->
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Window.Resources>然后 关于 treeview 的配置是
csharp
<TreeView Name="MainTree" ItemsSource="{Binding TypeTree}" Style="{StaticResource TypeTreeStyle}" ItemContainerStyle="{StaticResource TypeNode}" ItemTemplate="{StaticResource TypeTreeGroup}" SelectedItemChanged="MainTree_SelectedItemChanged">
</TreeView>这个配置必须要 绑定ThisName textbolck 的text 显示 然后
ItemsSource="{Binding Children} 对应就是属性children数据
其中 属性为：
csharp
/// <summary>
/// 栏目表
/// </summary>
public class MainItemInfos
{
/// <summary>
///
/// </summary>
[Description("")]
public int Id { get; set; }
/// <summary>
/// 编号
/// </summary>
[Description("编号")]
public string ThisNo { get; set; }
/// <summary>
/// 父id
/// </summary>
[Description("父id")]
public int PId { get; set; }
/// <summary>
/// 当前地址
/// </summary>
[Description("当前地址")]
public string ThitPath { get; set; }
/// <summary>
/// 当前名称
/// </summary>
[Description("当前名称")]
public string ThisName { get; set; }
/// <summary>
/// 是否启用
/// </summary>
[Description("是否启用")]
public bool IsUsed { get; set; }
/// <summary>
/// 数据类型（0，首页，1 栏目，3根栏目）
/// </summary>
[Description("数据类型（0 顶级页，1首页，2 栏目，3根栏目）")]
public EItemType PathType { get; set; }
/// <summary>
///
/// </summary>
[Description("")]
public DateTime CreateDate { get; set; }
/// <summary>
///
/// </summary>
[Description("")]
public DateTime Updated { get; set; }
/// <summary>
/// 当前
/// </summary>
public MainItemInfos ParentInfo { get; set; }
/// <summary>
/// 当前所有子数据
/// </summary>
public ObservableCollection<MainItemInfos> Children { get; set; }
}另外 从数据库获取来后的list操作
csharp
/// <summary>
/// 获取树结构下所有数据
/// </summary>
/// <param name="ThisInfo"></param>
/// <param name="ThisListAll"></param>
/// <param name="RetureInfolist"></param>
public void GetTreeNodeModel(MainItemInfos ThisInfo, List<MainItemInfos> ThisListAll, ref List<MainItemInfos> RetureInfolist)
{
List<MainItemInfos> ListOut = new List<MainItemInfos>();
IEnumerable<MainItemInfos> ListThisMains = ThisListAll.Where(x => x.PId == ThisInfo.Id);
if (ListThisMains != null && ListThisMains.Count() > 0)
{
ThisInfo.Children = new System.Collections.ObjectModel.ObservableCollection<MainItemInfos>(ListThisMains);
RetureInfolist.Add(ThisInfo);
foreach (MainItemInfos OneInfo in ThisInfo.Children)
{
OneInfo.ParentInfo = ThisInfo;
GetChildren(OneInfo, ThisListAll);
//GetTreeNodeModel(OneInfo, ThisListAll, ref RetureInfolist);
}
}
}
/// <summary>
/// 子目录下的文件（这样只有一个List可以只有一个树结构）一一更新
/// </summary>
/// <param name="ThisModel"></param>
/// <param name="ListAll"></param>
public void GetChildren(MainItemInfos ThisModel,List<MainItemInfos> ListAll)
{
if (ListAll != null )
{
IEnumerable<MainItemInfos> ListThisMains = ListAll.Where(x => x.PId == ThisModel.Id);
if (ListThisMains!=null && ListThisMains.Count() > 0)
{
ThisModel.Children = new System.Collections.ObjectModel.ObservableCollection<MainItemInfos>(ListThisMains) ;
foreach (MainItemInfos OneItem in ThisModel.Children)
{
GetChildren(OneItem,ListAll);
}
}
}
}
/// <summary>
/// 刷新树结构
/// </summary>
public void ReflashNodes()
{
List<MainItemInfos> ListDB = new DAL.DALMainItemInfos().QueryList().ToList();
MainItemInfos ThisZongInfos = ListDB.Where(x => x.PathType == 0).FirstOrDefault();
ListDB.Remove(ThisZongInfos);
List<MainItemInfos> ListBinding = new List<MainItemInfos>();
GetTreeNodeModel(ThisZongInfos, ListDB, ref ListBinding);
if (ListBinding != null)
{
MainTree.ItemsSource = ListBinding;
}
}