WPF - TreeView 仿VS2013解决方案资源管理器中的树状结构-.Net-爱编程
WPF - TreeView 仿VS2013解决方案资源管理器中的树状结构
先上效果图，若是你想要的效果，可以继续看下面的代码，不想浪费大家的时间。
此处定义TreeView的样式，参考自MSDN，稍作修改。
注意：在TreeViewItem控件模板定义中绑定一个数据（Level）以及一个值转换器（LevelToMarginConverter），具体定义见下部分。
&Style x:Key="ExpandCollapseToggleStyle" TargetType="ToggleButton"&
&Setter Property="Focusable" Value="False"/&
&Setter Property="Template"&
&Setter.Value&
&ControlTemplate TargetType="ToggleButton"&
&Border Width="12" Height="14"&
&Path x:Name="ExpandPath" HorizontalAlignment="Right" VerticalAlignment="Center"
Fill="Transparent" Stroke="#FFE6E6E6" Data="M 2 2 L 7 7 L 2 12 Z"/&
&ControlTemplate.Triggers&
&MultiTrigger&
&MultiTrigger.Conditions&
&Condition Property="IsMouseOver" Value="True"/&
&Condition Property="IsChecked" Value="False"/&
&/MultiTrigger.Conditions&
&Setter Property="Stroke" TargetName="ExpandPath" Value="#FF1BBBFA"/&
&/MultiTrigger&
&Trigger Property="IsChecked" Value="True"&
&Setter Property="Data" TargetName="ExpandPath" Value="M 1 10 L 7 3 L 7 10 Z"/&
&Setter Property="Fill" TargetName="ExpandPath" Value="#FFE6E6E6"/&
&/Trigger&
&MultiTrigger&
&MultiTrigger.Conditions&
&Condition Property="IsMouseOver" Value="True"/&
&Condition Property="IsChecked" Value="True"/&
&/MultiTrigger.Conditions&
&Setter Property="Stroke" TargetName="ExpandPath" Value="#FF1BBBFA"/&
&Setter Property="Fill" TargetName="ExpandPath" Value="#FF1BBBFA"/&
&/MultiTrigger&
&/ControlTemplate.Triggers&
&/ControlTemplate&
&/Setter.Value&
&Style x:Key="TreeViewItemFocusVisual"&
&Setter Property="Control.Template"&
&Setter.Value&
&ControlTemplate&
&Rectangle Margin="0,0,0,0" StrokeThickness="5" Stroke="Black" StrokeDashArray="1 2" Opacity="0" Fill="Black"/&
&/ControlTemplate&
&/Setter.Value&
&Style x:Key="ModernTreeViewItem" TargetType="{x:Type TreeViewItem}"&
&Setter Property="Background" Value="Transparent"/&
&Setter Property="HorizontalContentAlignment" Value="{Binding Path=HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/&
&Setter Property="VerticalContentAlignment" Value="{Binding Path=VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/&
&Setter Property="Padding" Value="1,0,0,0"/&
&Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/&
&Setter Property="FocusVisualStyle" Value="{StaticResource TreeViewItemFocusVisual}"/&
&Setter Property="Template"&
&Setter.Value&
&ControlTemplate TargetType="{x:Type TreeViewItem}"&
&Grid.RowDefinitions&
&RowDefinition Height="Auto"/&
&RowDefinition /&
&/Grid.RowDefinitions&
&Border Name="Bd" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}"&
&Grid Margin="{Binding Level, Converter={StaticResource LevelToMarginConverter}}"&
&Grid.ColumnDefinitions&
&ColumnDefinition Width="auto"/&
&ColumnDefinition /&
&/Grid.ColumnDefinitions&
&ToggleButton x:Name="Expander" Style="{StaticResource ExpandCollapseToggleStyle}" ClickMode="Press" HorizontalAlignment="Left"
IsChecked="{Binding Path=IsExpanded, RelativeSource={RelativeSource TemplatedParent}}"/&
&ContentPresenter Grid.Column="1" Margin="8,0,0,0" x:Name="PART_Header" ContentSource="Header"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/&
&ItemsPresenter x:Name="ItemsHost" Grid.Row="1"/&
&ControlTemplate.Triggers&
&Trigger Property="IsExpanded" Value="false"&
&Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed"/&
&/Trigger&
&Trigger Property="HasItems" Value="false"&
&Setter TargetName="Expander" Property="Visibility" Value="Hidden"/&
&/Trigger&
&MultiTrigger&
&MultiTrigger.Conditions&
&Condition Property="HasHeader" Value="false"/&
&Condition Property="Width" Value="Auto"/&
&/MultiTrigger.Conditions&
&Setter TargetName="PART_Header" Property="MinWidth" Value="75"/&
&/MultiTrigger&
&MultiTrigger&
&MultiTrigger.Conditions&
&Condition Property="HasHeader" Value="false"/&
&Condition Property="Height" Value="Auto"/&
&/MultiTrigger.Conditions&
&Setter TargetName="PART_Header" Property="MinHeight" Value="19"/&
&/MultiTrigger&
&Trigger Property="IsSelected" Value="true"&
&Setter TargetName="Bd" Property="Background" Value="{DynamicResource {x:Static SystemColors.HighlightBrushKey}}"/&
&Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/&
&/Trigger&
&MultiTrigger&
&MultiTrigger.Conditions&
&Condition Property="IsSelected" Value="true"/&
&Condition Property="IsSelectionActive" Value="false"/&
&/MultiTrigger.Conditions&
&Setter TargetName="Bd" Property="Background" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}"/&
&Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/&
&/MultiTrigger&
&Trigger Property="IsEnabled" Value="false"&
&Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/&
&/Trigger&
&/ControlTemplate.Triggers&
&/ControlTemplate&
&/Setter.Value&
值转换器定义
此转换器主要用于根据子节点的级数计算每行内容的缩进，根节点级数为1，根节点的子节点级数为2，依次类推。
class LevelToMarginConverter : System.Windows.Data.IValueConverter
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
var level = (int)
return new System.Windows.Thickness(8 * level + 10 * (level - 1), 0, 0, 0);
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
return null;
此处定义的TreeView空间绑定的数据。
注意：在TreeNode类中定义了Level属性，用于指示当前节点的级数。
public class TreeViewData
private static TreeViewData _Data = null;
public static TreeViewData Data
if(_Data == null)
_Data = new TreeViewData();
var rn1 = new TreeNode() { Label = "Root A", Level = 1 };
rn1.ChildNodes.Add(new TreeNode() { Label = "Root A - Child 1", Level = 2 });
rn1.ChildNodes.Add(new TreeNode() { Label = "Root A - Child 2", Level = 2 });
rn1.ChildNodes.Add(new TreeNode() { Label = "Root A - Child 3", Level = 2 });
rn1.ChildNodes.Add(new TreeNode() { Label = "Root A - Child 4", Level = 2 });
rn1.ChildNodes.Add(new TreeNode() { Label = "Root A - Child 5", Level = 2 });
var rn2 = new TreeNode() { Label = "Root B", Level = 1 };
rn2.ChildNodes.Add(new TreeNode() { Label = "Root B - Child 1", Level = 2 });
var rn21 = new TreeNode() { Label = "Root B - Child 2", Level = 2 };
rn21.ChildNodes.Add(new TreeNode() { Label = "Root B - Child 2 - Child 1", Level = 3 });
rn21.ChildNodes.Add(new TreeNode() { Label = "Root B - Child 2 - Child 2", Level = 3 });
rn2.ChildNodes.Add(rn21);
rn2.ChildNodes.Add(new TreeNode() { Label = "Root B - Child 3", Level = 2 });
rn2.ChildNodes.Add(new TreeNode() { Label = "Root B - Child 4", Level = 2 });
rn2.ChildNodes.Add(new TreeNode() { Label = "Root B - Child 5", Level = 2 });
var rn3 = new TreeNode() { Label = "Root C", Level = 1 };
rn3.ChildNodes.Add(new TreeNode() { Label = "Root C - Child 1", Level = 2 });
rn3.ChildNodes.Add(new TreeNode() { Label = "Root C - Child 2", Level = 2 });
rn3.ChildNodes.Add(new TreeNode() { Label = "Root C - Child 3", Level = 2 });
rn3.ChildNodes.Add(new TreeNode() { Label = "Root C - Child 4", Level = 2 });
rn3.ChildNodes.Add(new TreeNode() { Label = "Root C - Child 5", Level = 2 });
_Data.RootNodes.Add(rn1);
_Data.RootNodes.Add(rn2);
_Data.RootNodes.Add(rn3);
private System.Collections.ObjectModel.ObservableCollection&TreeNode& _RootNodes = null;
public IList&TreeNode& RootNodes { get { return _RootNodes ?? (_RootNodes = new System.Collections.ObjectModel.ObservableCollection&TreeNode&()); } }
public class TreeNode
public string Label { get; set; }
public int Level { get; set; }
private System.Collections.ObjectModel.ObservableCollection&TreeNode& _ChildNodes = null;
public IList&TreeNode& ChildNodes { get { return _ChildNodes ?? (_ChildNodes = new System.Collections.ObjectModel.ObservableCollection&TreeNode&()); } }
&TreeView ItemsSource="{Binding Source={x:Static data:TreeViewData.Data}, Path=RootNodes}"
HorizontalContentAlignment="Stretch" Background="#FF252526" Width="300" ItemContainerStyle="{StaticResource ModernTreeViewItem}"&
&TreeView.ItemTemplate&
&HierarchicalDataTemplate DataType="{x:Type data:TreeViewData+TreeNode}" ItemsSource="{Binding ChildNodes}"&
&Grid Height="32"&
&TextBlock Text="{Binding Label}" VerticalAlignment="Center" Foreground="#FFE6E6E6" FontSize="13"/&
&/HierarchicalDataTemplate&
&/TreeView.ItemTemplate&
&/TreeView&
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