C# 更改树视图中已展开项的位置
标准WPF树视图在父项下展开时显示子项。为了获得更好的可见性，我希望在父项的右侧显示子项。大概是这样的： 发布项是发布列表的子项 我怎样才能做到这一点 提前感谢，C# 更改树视图中已展开项的位置,c#,wpf,treeview,C#,Wpf,Treeview,标准WPF树视图在父项下展开时显示子项。为了获得更好的可见性，我希望在父项的右侧显示子项。大概是这样的： 发布项是发布列表的子项 我怎样才能做到这一点 提前感谢， Frank您不能从其树视图中取出树视图项。您所能做的最好的事情就是修改它的模板以水平扩展它。但这样也无法达到预期效果，因为扩展区域不会浮在任何其他对象（如弹出窗口）之上 因此，我创建了一个新的控件，它来自菜单。菜单最适合您的情况，因为它水平打开其子菜单。永远不会离开银幕。需要一个新的控件来覆盖其在鼠标上方打开子菜单的行为。我们需要类
Frank您不能从其
树视图树视图项弹出窗口控件菜单菜单控件来覆盖其在鼠标上方打开子菜单的行为。我们需要类似于TreeView
的行为，所以扩展必须在鼠标单击时进行，而不是悬停
此控件还保留了完整的键盘支持，可以使用左/右/上/下/esc
键浏览整个菜单
在窗口中放置菜单控件，然后右键单击菜单中的控件文档大纲>编辑其他模板>ItemContainerStyle
。这将为您提供所需的资源。只需将其复制粘贴到名为TreeViewFloatingDisplay.xaml的新文件中，如下所示。为了简洁起见，我用…
编写了代码，替换的内容显示为注释，新内容显示在下面
TreeViewFloatingDisplay.xaml
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m0,0l3.5,4l7,0z
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TreeViewFloatingDisplay.xaml.cs
使用System.Windows；
使用System.Windows.Controls；
使用System.Windows.Input；
使用System.Windows.Media；
使用System.Windows.Shapes；
使用System.Windows.Threading；
命名空间WpfStackOverflow.MenuAsTreeView2
{
///
///TreeViewFloatingDisplay.xaml的交互逻辑
///
公共部分类树视图浮动显示：菜单
{
公共树视图浮动显示（）
{
初始化组件（）；
}
受保护的覆盖依赖对象GetContainerForItemOverride（）
{
返回新的MenuItemNew（）；
}
}
公共类MenuItemNew:MenuItem
{
#区域构造函数
静态MenuItemNew（）
{
MenuItem.IsSubmenuOpenProperty.OverrideMetadata（类型为（MenuItemNew）），
新的FrameworkPropertyMetadata（false，MenuItem.IsSubmenuOpenProperty.DefaultMetadata.PropertyChangedCallback，强制子菜单打开）；
}
public MenuItemNew（）
{
this.PreviewMouseLeftButtonDown+=MenuItemNew\u PreviewMouseLeftButtonDown；
}
#端区
#区域事件处理程序
void MenuItemNew\u预览鼠标左键向下（对象发送器，鼠标按钮ventargs e）
{
MenuItemNew curItem=发送方为MenuItemNew；
System.Diagnostics.Debug.WriteLine（“Role=“+curItem.Role”）；
路径pth=e.OriginalSource作为路径；
if（pth==null）返回；
DependencyObject parent=VisualTreeHelper.GetParent（pth）；
while（父项为MenuItemNew==null）
父级=VisualTreeHelper.GetParent（父级）；
MenuItemNew actualSource=作为MenuItemNew的父项；
<Menu x:Class="WpfStackOverflow.MenuAsTreeView2.TreeViewFloatingDisplay"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Menu.Resources>
<Geometry x:Key="RightArrow">M 0,0 L 4,3.5 L 0,7 Z</Geometry>
<LinearGradientBrush x:Key="MenuItemSelectionFill" EndPoint="0,1" StartPoint="0,0">
<GradientStop Color="#34C5EBFF" Offset="0"/>
<GradientStop Color="#3481D8FF" Offset="1"/>
</LinearGradientBrush>
<Geometry x:Key="Checkmark">M 0,5.1 L 1.7,5.2 L 3.4,7.1 L 8,0.4 L 9.2,0 L 3.3,10.8 Z</Geometry>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" RadiusY="2" RadiusX="2" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
<Rectangle x:Name="InnerBorder" Margin="1" RadiusY="2" RadiusX="2"/>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="14" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
<ColumnDefinition Width="4"/>
<ColumnDefinition Width="*"/>
<!--<ColumnDefinition Width="37"/>-->
<ColumnDefinition Width="0"/>
<ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
<!--<ColumnDefinition Width="17"/>-->
<ColumnDefinition Width="0"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="1" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<Border x:Name="GlyphPanel" BorderBrush="#CDD3E6" BorderThickness="1" Background="#E6EFF4" CornerRadius="3" Height="22" Margin="1" Visibility="Hidden" Width="22">
<Path x:Name="Glyph" Data="{StaticResource Checkmark}" Fill="#0C12A1" FlowDirection="LeftToRight" Height="11" Width="9"/>
</Border>
<ContentPresenter Grid.Column="2" ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<TextBlock Grid.Column="4" Margin="{TemplateBinding Padding}" Text="{TemplateBinding InputGestureText}"/>
</Grid>
</Grid>
<ControlTemplate.Triggers>
...
</ControlTemplate.Triggers>
</ControlTemplate>
<LinearGradientBrush x:Key="MenuItemPressedFill" EndPoint="0,1" StartPoint="0,0">
...
</LinearGradientBrush>
<SolidColorBrush x:Key="SubMenuBackgroundBrush" Color="#FFF5F5F5"/>
<Geometry x:Key="UpArrow">M 0,4 L 3.5,0 L 7,4 Z</Geometry>
<Style x:Key="MenuScrollButton" BasedOn="{x:Null}" TargetType="{x:Type RepeatButton}">
...
</Style>
<MenuScrollingVisibilityConverter x:Key="MenuScrollingVisibilityConverter"/>
<Geometry x:Key="DownArrow">M 0,0 L 3.5,4 L 7,0 Z</Geometry>
<Style x:Key="{ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}" BasedOn="{x:Null}" TargetType="{x:Type ScrollViewer}">
...
</Style>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle x:Name="OuterBorder" RadiusY="2" RadiusX="2"/>
<Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" Margin="1" RadiusY="1" RadiusX="1" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
<Rectangle x:Name="InnerBorder" Margin="2"/>
<DockPanel>
<Path x:Name="PART_RightArrow" Data="{StaticResource RightArrow}" Fill="Transparent" Stroke="Black" Margin="8,0,0,0" VerticalAlignment="Center" HorizontalAlignment="Right"/>
<ContentPresenter Visibility="Collapsed" x:Name="Icon" ContentSource="Icon" Margin="4,0,6,0" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<Path x:Name="GlyphPanel" Data="{StaticResource Checkmark}" Fill="{TemplateBinding Foreground}" FlowDirection="LeftToRight" Margin="7,0,0,0" Visibility="Collapsed" VerticalAlignment="Center"/>
<ContentPresenter ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
</DockPanel>
<!--<Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="1" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Bottom" VerticalOffset="-1">-->
<Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="1" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Right" VerticalOffset="0">
<Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent">
<Border x:Name="SubMenuBorder" BorderBrush="#FF959595" BorderThickness="1" Background="{StaticResource SubMenuBackgroundBrush}">
<ScrollViewer x:Name="SubMenuScrollViewer" Margin="1,0" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
<Grid RenderOptions.ClearTypeHint="Enabled">
<Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
<Rectangle x:Name="OpaqueRect" Fill="{StaticResource SubMenuBackgroundBrush}" Height="{Binding ActualHeight, ElementName=SubMenuBorder}" Width="{Binding ActualWidth, ElementName=SubMenuBorder}"/>
</Canvas>
<!-- Comment below 3 rectangles to remove vertical line present on the left -->
<!--<Rectangle Fill="#F1F1F1" HorizontalAlignment="Left" Margin="1,2" RadiusY="2" RadiusX="2" Width="28"/>
<Rectangle Fill="#E2E3E3" HorizontalAlignment="Left" Margin="29,2,0,2" Width="1"/>
<Rectangle Fill="White" HorizontalAlignment="Left" Margin="30,2,0,2" Width="1"/>-->
<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Cycle" Grid.IsSharedSizeScope="true" Margin="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle"/>
</Grid>
</ScrollViewer>
</Border>
</Themes:SystemDropShadowChrome>
</Popup>
</Grid>
<ControlTemplate.Triggers>
...
</ControlTemplate.Triggers>
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=TopLevelItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
...
</ControlTemplate>
<ControlTemplate x:Key="{ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}" TargetType="{x:Type MenuItem}">
<Grid SnapsToDevicePixels="true">
<Rectangle x:Name="Bg" Fill="{TemplateBinding Background}" RadiusY="2" RadiusX="2" Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1"/>
<Rectangle x:Name="InnerBorder" Margin="1" RadiusY="2" RadiusX="2" Stroke="Transparent" StrokeThickness="1"/>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="14" SharedSizeGroup="MenuItemIconColumnGroup" Width="Auto"/>
<ColumnDefinition Width="4"/>
<ColumnDefinition Width="*"/>
<!--<ColumnDefinition Width="37"/>-->
<ColumnDefinition Width="0"/>
<ColumnDefinition SharedSizeGroup="MenuItemIGTColumnGroup" Width="Auto"/>
<!--<ColumnDefinition Width="17"/>-->
<ColumnDefinition Width="0"/>
</Grid.ColumnDefinitions>
<ContentPresenter x:Name="Icon" ContentSource="Icon" Margin="1" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" VerticalAlignment="Center"/>
<Border x:Name="GlyphPanel" BorderBrush="#CDD3E6" BorderThickness="1" Background="#E6EFF4" CornerRadius="3" Height="22" Margin="1" Visibility="Hidden" Width="22">
<Path x:Name="Glyph" Data="{StaticResource Checkmark}" Fill="#0C12A1" FlowDirection="LeftToRight" Height="11" Width="9"/>
</Border>
<ContentPresenter Grid.Column="2" ContentSource="Header" Margin="{TemplateBinding Padding}" RecognizesAccessKey="True" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
<TextBlock Grid.Column="4" Margin="{TemplateBinding Padding}" Text="{TemplateBinding InputGestureText}" Visibility="Collapsed"/>
<!--<Path Grid.Column="5" Data="{StaticResource RightArrow}" Fill="{TemplateBinding Foreground}" Margin="4,0,0,0" VerticalAlignment="Center"/>-->
<Path Grid.Column="0" x:Name="PART_RightArrow" Data="{StaticResource RightArrow}" Fill="Transparent" Stroke="Black" Margin="4,0,0,0" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>
<!--<Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="-2" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Right" VerticalOffset="-3">-->
<Popup x:Name="PART_Popup" AllowsTransparency="true" Focusable="false" HorizontalOffset="3" IsOpen="{Binding IsSubmenuOpen, RelativeSource={RelativeSource TemplatedParent}}" PopupAnimation="{DynamicResource {x:Static SystemParameters.MenuPopupAnimationKey}}" Placement="Right" VerticalOffset="-4">
<Themes:SystemDropShadowChrome x:Name="Shdw" Color="Transparent">
<Border x:Name="SubMenuBorder" BorderBrush="#FF959595" BorderThickness="1" Background="{StaticResource SubMenuBackgroundBrush}">
<ScrollViewer x:Name="SubMenuScrollViewer" Margin="1,0" Style="{DynamicResource {ComponentResourceKey ResourceId=MenuScrollViewer, TypeInTargetAssembly={x:Type FrameworkElement}}}">
<Grid RenderOptions.ClearTypeHint="Enabled">
<Canvas HorizontalAlignment="Left" Height="0" VerticalAlignment="Top" Width="0">
<Rectangle x:Name="OpaqueRect" Fill="{StaticResource SubMenuBackgroundBrush}" Height="{Binding ActualHeight, ElementName=SubMenuBorder}" Width="{Binding ActualWidth, ElementName=SubMenuBorder}"/>
</Canvas>
<!-- Comment below 3 rectangles to remove vertical line present on the left -->
<!--<Rectangle Fill="#F1F1F1" HorizontalAlignment="Left" Margin="1,2" RadiusY="2" RadiusX="2" Width="28"/>
<Rectangle Fill="#E2E3E3" HorizontalAlignment="Left" Margin="29,2,0,2" Width="1"/>
<Rectangle Fill="White" HorizontalAlignment="Left" Margin="30,2,0,2" Width="1"/>-->
<ItemsPresenter x:Name="ItemsPresenter" KeyboardNavigation.DirectionalNavigation="Cycle" Grid.IsSharedSizeScope="true" Margin="2" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" KeyboardNavigation.TabNavigation="Cycle"/>
</Grid>
</ScrollViewer>
</Border>
</Themes:SystemDropShadowChrome>
</Popup>
</Grid>
<ControlTemplate.Triggers>
...
</ControlTemplate.Triggers>
</ControlTemplate>
<Style x:Key="MenuItemStyle1" TargetType="{x:Type MenuItem}">
<Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="ScrollViewer.PanningMode" Value="Both"/>
<Setter Property="Stylus.IsFlicksEnabled" Value="False"/>
<Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
<Style.Triggers>
<Trigger Property="Role" Value="TopLevelHeader">
<Setter Property="Padding" Value="7,2,8,3"/>
<Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
</Trigger>
<Trigger Property="Role" Value="TopLevelItem">
<Setter Property="Padding" Value="7,2,8,3"/>
<Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=TopLevelItemTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuHeader">
<!--<Setter Property="Padding" Value="2,3,2,3"/>-->
<Setter Property="Padding" Value="1,2,1,2"/>
<Setter Property="Template" Value="{DynamicResource {ComponentResourceKey ResourceId=SubmenuHeaderTemplateKey, TypeInTargetAssembly={x:Type MenuItem}}}"/>
</Trigger>
<Trigger Property="Role" Value="SubmenuItem">
<!--<Setter Property="Padding" Value="2,3,2,3"/>-->
<Setter Property="Padding" Value="1,2,1,2"/>
</Trigger>
</Style.Triggers>
</Style>
</Menu.Resources>
</Menu>
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
using System.Windows.Threading;
namespace WpfStackOverflow.MenuAsTreeView2
{
/// <summary>
/// Interaction logic for TreeViewFloatingDisplay.xaml
/// </summary>
public partial class TreeViewFloatingDisplay : Menu
{
public TreeViewFloatingDisplay()
{
InitializeComponent();
}
protected override DependencyObject GetContainerForItemOverride()
{
return new MenuItemNew();
}
}
public class MenuItemNew : MenuItem
{
#region Constructors
static MenuItemNew()
{
MenuItem.IsSubmenuOpenProperty.OverrideMetadata(typeof(MenuItemNew),
new FrameworkPropertyMetadata(false, MenuItem.IsSubmenuOpenProperty.DefaultMetadata.PropertyChangedCallback, CoerceIsSubmenuOpen));
}
public MenuItemNew()
{
this.PreviewMouseLeftButtonDown += MenuItemNew_PreviewMouseLeftButtonDown;
}
#endregion
#region Event Handlers
void MenuItemNew_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
MenuItemNew curItem = sender as MenuItemNew;
System.Diagnostics.Debug.WriteLine("Role = " + curItem.Role);
Path pth = e.OriginalSource as Path;
if (pth == null) return;
DependencyObject parent = VisualTreeHelper.GetParent(pth);
while (parent as MenuItemNew == null)
parent = VisualTreeHelper.GetParent(parent);
MenuItemNew actualSource = parent as MenuItemNew;
if (actualSource.Role == MenuItemRole.TopLevelHeader)
{
IsExpanderClicked = !IsExpanderClicked;
actualSource.CoerceValue(MenuItemNew.IsSubmenuOpenProperty);
}
if (curItem.Role == MenuItemRole.SubmenuHeader)
{
IsExpanderClicked = !IsExpanderClicked;
curItem.CoerceValue(MenuItemNew.IsSubmenuOpenProperty);
}
}
#endregion
#region IsExpanderClicked Dependency Property
public bool IsExpanderClicked
{
get { return (bool)GetValue(IsExpanderClickedProperty); }
set { SetValue(IsExpanderClickedProperty, value); }
}
// Using a DependencyProperty as the backing store for IsExpanderClicked. This enables animation, styling, binding, etc...
public static readonly DependencyProperty IsExpanderClickedProperty =
DependencyProperty.Register("IsExpanderClicked", typeof(bool), typeof(MenuItemNew), new PropertyMetadata(false));
#endregion
#region Overrides
protected override DependencyObject GetContainerForItemOverride()
{
return new MenuItemNew();
}
#endregion
#region Dependency Property Callbacks
private static object CoerceIsSubmenuOpen(DependencyObject d, object value)
{
MenuItemNew item = (MenuItemNew)d;
if ((bool)value)
{
if (item.IsMouseOver)
{
System.Diagnostics.Debug.WriteLine(item.IsExpanderClicked.ToString());
return item.IsExpanderClicked;
}
if (!item.IsLoaded)
{
item.Loaded += (s, e) =>
{
Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Input, new DispatcherOperationCallback(delegate(object param)
{
item.CoerceValue(MenuItemNew.IsSubmenuOpenProperty);
return null;
}), null);
};
return false;
}
}
if (item.IsExpanderClicked)
return true;
return value;
}
#endregion
}
}
<Grid>
<myMenu:TreeViewFloatingDisplay Background="AliceBlue" ItemsSource="{Binding Countries}" Width="300" HorizontalAlignment="Left">
<myMenu:TreeViewFloatingDisplay.ItemsPanel>
<ItemsPanelTemplate>
<StackPanel/>
</ItemsPanelTemplate>
</myMenu:TreeViewFloatingDisplay.ItemsPanel>
<myMenu:TreeViewFloatingDisplay.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding States}">
<HierarchicalDataTemplate.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Cities}">
<Grid>
<ContentControl Content="{Binding .}">
<ContentControl.ContentTemplate>
<DataTemplate>
<Grid Background="#FFE8E8E8" HorizontalAlignment="Stretch" MinHeight="35">
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="75"/>
<ColumnDefinition MinWidth="150"/>
<ColumnDefinition MinWidth="30"/>
</Grid.ColumnDefinitions>
<TextBlock Margin="3 1 1 1" Text="{Binding Name}" HorizontalAlignment="Left" VerticalAlignment="Center"/>
<TextBox Grid.Column="1" Margin="1" VerticalAlignment="Center" HorizontalAlignment="Stretch" />
<Label Grid.Column="2" Margin="1" VerticalAlignment="Center">
<CheckBox />
</Label>
</Grid>
</DataTemplate>
</ContentControl.ContentTemplate>
</ContentControl>
</Grid>
</HierarchicalDataTemplate>
</HierarchicalDataTemplate.ItemTemplate>
<ContentControl Content="{Binding .}">
<ContentControl.ContentTemplate>
<DataTemplate>
<Grid Background="#FFE8E8E8" HorizontalAlignment="Stretch" Width="255" MinHeight="35">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="75"/>
<ColumnDefinition Width="150"/>
<ColumnDefinition Width="30"/>
</Grid.ColumnDefinitions>
<TextBlock Margin="1" Text="{Binding Name}" HorizontalAlignment="Left" VerticalAlignment="Center"/>
<TextBox Grid.Column="1" Margin="1" VerticalAlignment="Center" HorizontalAlignment="Stretch" />
<Label Grid.Column="2" Margin="1" VerticalAlignment="Center">
<CheckBox />
</Label>
</Grid>
</DataTemplate>
</ContentControl.ContentTemplate>
</ContentControl>
</HierarchicalDataTemplate>
</myMenu:TreeViewFloatingDisplay.ItemTemplate>
</myMenu:TreeViewFloatingDisplay>
</Grid>
public class ViewModel
{
public ObservableCollection<Country> Countries { get; set; }
public ViewModel()
{
Countries = new ObservableCollection<Country>();
Countries.Add(new Country()
{
Name = "India",
States = new ObservableCollection<State>()
{ new State()
{
Name="MP",
Cities = new ObservableCollection<City>()
{
new City(){Name = "Bhopal"},new City(){Name = "Indore"}, new City(){Name = "Ujjain"}
}
} ,
new State()
{
Name="UP",
Cities = new ObservableCollection<City>()
{
new City(){Name = "Agra"},new City(){Name = "Noida"}, new City(){Name = "Jhansi"}
}
} ,
new State()
{
Name="AP",
Cities = new ObservableCollection<City>()
{
new City(){Name = "Hyderabad"},new City(){Name = "Warangal"}, new City(){Name = "Vijaywada"}
}
}
}
});
Countries.Add(new Country()
{
Name = "Australia",
States = new ObservableCollection<State>()
{ new State()
{
Name="Tasmania",
Cities = new ObservableCollection<City>()
{
new City(){Name = "Sydney"},new City(){Name = "Melbourne"}
}
}
}
});
}
}
public class Country
{
public string Name { get; set; }
public ObservableCollection<State> States { get; set; }
}
public class State
{
public string Name { get; set; }
public ObservableCollection<City> Cities { get; set; }
}
public class City
{
public string Name { get; set; }
}