Blend 修改TreeViewItem樣式

来源:https://www.cnblogs.com/njit-77/archive/2020/02/13/12303397.html

Blend 修改TreeViewItem樣式 1、用Blend for Visual Studio 2019 新建Wpf項目,拖動一個TreeView控制項到Grid上 2、在繪圖視窗選中TreeViewItem,右鍵編輯模版 編輯副本 3、繪製水平、垂直虛線( "參考博文" ) 在TreeViewI ...


Blend 修改TreeViewItem樣式

1、用Blend for Visual Studio 2019 新建Wpf項目,拖動一個TreeView控制項到Grid上

    <Grid>
        <TreeView>
            <TreeViewItem Header="TreeViewItem">
                <TreeViewItem Header="TreeViewItem"/>
            </TreeViewItem>
            <TreeViewItem Header="TreeViewItem">
                <TreeViewItem Header="TreeViewItem"/>
            </TreeViewItem>
        </TreeView>
    </Grid>

2、在繪圖視窗選中TreeViewItem,右鍵編輯模版->編輯副本

3、繪製水平、垂直虛線(參考博文

在TreeViewItem ControlTemplate模板中增加

<!-- Connecting Lines -->
<!-- Horizontal line -->
<Rectangle x:Name="HorLn" 
           Margin="10,0,0,0" 
           Height="1" 
           Stroke="#FF565656" 
           SnapsToDevicePixels="True" 
           StrokeDashCap="Square" 
           StrokeDashOffset="1"/>

<!-- Vertical line -->
<Rectangle x:Name="VerLn" 
           Width="1" 
           Stroke="#FF565656" 
           Margin="0,0,-2,0" 
           Grid.RowSpan="2" 
           SnapsToDevicePixels="true" 
           Fill="White" 
           StrokeDashCap="Square" 
           StrokeDashArray="1,5"/>

對於當前層最後一個節點,不再畫它水平方向線以下的垂直線,這裡使用到轉換器完成

    class TreeViewLineConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var item = value as TreeViewItem;
            ItemsControl ic = ItemsControl.ItemsControlFromItemContainer(item);
            return ic.ItemContainerGenerator.IndexFromContainer(item) == ic.Items.Count - 1;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return false;
        }
    }

觸發器需增加代碼

                            <!-- 當前層最後一個元素不畫下方垂直線 -->
                            <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Converter={StaticResource LineConverter}}" Value="true">
                                <Setter TargetName="VerLn" Property="Height" Value="15"/>
                                <Setter TargetName="VerLn" Property="VerticalAlignment" Value="Top"/>
                            </DataTrigger>
                            <!-- Root第一個元素不顯示上方垂直線 -->
                            <Trigger Property="TabIndex" Value="1">
                                <Setter TargetName="VerLn" Property="Margin" Value="0,12,1,0"/>
                                <Setter TargetName="VerLn" Property="Height" Value="Auto"/>
                            </Trigger>

完整樣式代碼

        <Style x:Key="TreeViewItemFocusVisual">
            <Setter Property="Control.Template">
                <Setter.Value>
                    <ControlTemplate>
                        <Rectangle/>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Checked.Fill" Color="#FF595959"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Checked.Stroke" Color="#FF262626"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Stroke" Color="#FF27C7F7"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Fill" Color="#FFCCEEFB"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Checked.Stroke" Color="#FF1CC4F7"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Checked.Fill" Color="#FF82DFFB"/>
        <PathGeometry x:Key="TreeArrow" Figures="M0,0 L0,6 L6,0 z"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Fill" Color="#FFFFFFFF"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Stroke" Color="#FF818181"/>
        <Style x:Key="ExpandCollapseToggleStyle" TargetType="{x:Type ToggleButton}">
            <Setter Property="Focusable" Value="False"/>
            <Setter Property="Width" Value="16"/>
            <Setter Property="Height" Value="16"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ToggleButton}">
                        <Border Background="Transparent" Height="16" Padding="5,5,5,5" Width="16">
                            <Path x:Name="ExpandPath" Data="{StaticResource TreeArrow}" Fill="{StaticResource TreeViewItem.TreeArrow.Static.Fill}" Stroke="{StaticResource TreeViewItem.TreeArrow.Static.Stroke}">
                                <Path.RenderTransform>
                                    <RotateTransform Angle="135" CenterY="3" CenterX="3"/>
                                </Path.RenderTransform>
                            </Path>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsChecked" Value="True">
                                <Setter Property="RenderTransform" TargetName="ExpandPath">
                                    <Setter.Value>
                                        <RotateTransform Angle="180" CenterY="3" CenterX="3"/>
                                    </Setter.Value>
                                </Setter>
                                <Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.Static.Checked.Fill}"/>
                                <Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.Static.Checked.Stroke}"/>
                            </Trigger>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Stroke}"/>
                                <Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Fill}"/>
                            </Trigger>
                            <MultiTrigger>
                                <MultiTrigger.Conditions>
                                    <Condition Property="IsMouseOver" Value="True"/>
                                    <Condition Property="IsChecked" Value="True"/>
                                </MultiTrigger.Conditions>
                                <Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Checked.Stroke}"/>
                                <Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Checked.Fill}"/>
                            </MultiTrigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <local:TreeViewLineConverter x:Key="LineConverter"/>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="Background" Value="Transparent"/>
            <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="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>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition MinWidth="19" Width="Auto"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition/>
                            </Grid.RowDefinitions>
                            
                             <!--Connecting Lines--> 
                             <!--Horizontal line--> 
                            <Rectangle x:Name="HorLn" Margin="10,0,0,0" Height="1" Stroke="#FF565656" SnapsToDevicePixels="True" StrokeDashCap="Square" StrokeDashOffset="1"/>
                             <!--Vertical line--> 
                            <Rectangle x:Name="VerLn" Width="1" Stroke="#FF565656" Margin="0,0,-2,0" Grid.RowSpan="2" SnapsToDevicePixels="true" Fill="White" StrokeDashCap="Square" StrokeDashArray="1,5"/>

                            <ToggleButton x:Name="Expander" ClickMode="Press" IsChecked="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ExpandCollapseToggleStyle}"/>
                            <Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="1" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
                                <ContentPresenter x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                            </Border>
                            <ItemsPresenter x:Name="ItemsHost" Grid.ColumnSpan="2" Grid.Column="1" Grid.Row="1"/>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsExpanded" Value="false">
                                <Setter Property="Visibility" TargetName="ItemsHost" Value="Collapsed"/>
                            </Trigger>
                            <Trigger Property="HasItems" Value="false">
                                <Setter Property="Visibility" TargetName="Expander" Value="Hidden"/>
                            </Trigger>
                            <Trigger Property="IsSelected" Value="true">
                                <Setter Property="Background" TargetName="Bd" 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 Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}"/>
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightTextBrushKey}}"/>
                            </MultiTrigger>
                            <Trigger Property="IsEnabled" Value="false">
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                            </Trigger>

                            <!-- 當前層最後一個元素不畫下方垂直線 -->
                            <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Converter={StaticResource LineConverter}}" Value="true">
                                <Setter TargetName="VerLn" Property="Height" Value="15"/>
                                <Setter TargetName="VerLn" Property="VerticalAlignment" Value="Top"/>
                            </DataTrigger>
                            <!-- Root第一個元素不顯示上方垂直線 -->
                            <Trigger Property="TabIndex" Value="1">
                                <Setter TargetName="VerLn" Property="Margin" Value="0,12,1,0"/>
                                <Setter TargetName="VerLn" Property="Height" Value="Auto"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="VirtualizingPanel.IsVirtualizing" Value="true">
                    <Setter Property="ItemsPanel">
                        <Setter.Value>
                            <ItemsPanelTemplate>
                                <VirtualizingStackPanel/>
                            </ItemsPanelTemplate>
                        </Setter.Value>
                    </Setter>
                </Trigger>
            </Style.Triggers>
        </Style>

效果圖如下

4、TreeViewItem顯示圖片以及名稱

        <TreeView ItemsSource="{Binding Tools}">
            <TreeView.Resources>
                <local:UriToImageSourceConverter x:Key="UriToImageSource"/>
            </TreeView.Resources>
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Nodes}">
                    <DockPanel>
                        <Image Source="{Binding PicPath, Converter={StaticResource UriToImageSource}}" Width="25" Height="25"/>
                        <TextBlock Text="{Binding Name}" FontSize="13" VerticalAlignment="Center" Margin="3,0,0,0"/>
                    </DockPanel>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>

Tools是數據集合,節點集合Nodes。PicPath保存圖片名稱,使用UriToImageSourceConverter轉換器轉換成BitmapImage類型顯示。

    class UriToImageSourceConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string path = (string)value;
            if (string.IsNullOrEmpty(path))
            {
                path = "pack://application:,,,/WpfApp2;component/position.ico";//預設圖片
            }
            return new BitmapImage(new Uri(path, UriKind.Absolute));
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return false;
        }
    }

效果圖如下

完整代碼

<Window x:Class="WpfApp2.MainWindow"
        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:local="clr-namespace:WpfApp2"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">


    <Window.Resources>
        <Style x:Key="TreeViewItemFocusVisual">
            <Setter Property="Control.Template">
                <Setter.Value>
                    <ControlTemplate>
                        <Rectangle/>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Checked.Fill" Color="#FF595959"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Checked.Stroke" Color="#FF262626"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Stroke" Color="#FF27C7F7"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Fill" Color="#FFCCEEFB"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Checked.Stroke" Color="#FF1CC4F7"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.MouseOver.Checked.Fill" Color="#FF82DFFB"/>
        <PathGeometry x:Key="TreeArrow" Figures="M0,0 L0,6 L6,0 z"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Fill" Color="#FFFFFFFF"/>
        <SolidColorBrush x:Key="TreeViewItem.TreeArrow.Static.Stroke" Color="#FF818181"/>
        <Style x:Key="ExpandCollapseToggleStyle" TargetType="{x:Type ToggleButton}">
            <Setter Property="Focusable" Value="False"/>
            <Setter Property="Width" Value="16"/>
            <Setter Property="Height" Value="16"/>
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type ToggleButton}">
                        <Border Background="Transparent" Height="16" Padding="5,5,5,5" Width="16">
                            <Path x:Name="ExpandPath" Data="{StaticResource TreeArrow}" Fill="{StaticResource TreeViewItem.TreeArrow.Static.Fill}" Stroke="{StaticResource TreeViewItem.TreeArrow.Static.Stroke}">
                                <Path.RenderTransform>
                                    <RotateTransform Angle="135" CenterY="3" CenterX="3"/>
                                </Path.RenderTransform>
                            </Path>
                        </Border>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsChecked" Value="True">
                                <Setter Property="RenderTransform" TargetName="ExpandPath">
                                    <Setter.Value>
                                        <RotateTransform Angle="180" CenterY="3" CenterX="3"/>
                                    </Setter.Value>
                                </Setter>
                                <Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.Static.Checked.Fill}"/>
                                <Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.Static.Checked.Stroke}"/>
                            </Trigger>
                            <Trigger Property="IsMouseOver" Value="True">
                                <Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Stroke}"/>
                                <Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Fill}"/>
                            </Trigger>
                            <MultiTrigger>
                                <MultiTrigger.Conditions>
                                    <Condition Property="IsMouseOver" Value="True"/>
                                    <Condition Property="IsChecked" Value="True"/>
                                </MultiTrigger.Conditions>
                                <Setter Property="Stroke" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Checked.Stroke}"/>
                                <Setter Property="Fill" TargetName="ExpandPath" Value="{StaticResource TreeViewItem.TreeArrow.MouseOver.Checked.Fill}"/>
                            </MultiTrigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

        <local:TreeViewLineConverter x:Key="LineConverter"/>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="Background" Value="Transparent"/>
            <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="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>
                            <Grid.ColumnDefinitions>
                                <ColumnDefinition MinWidth="19" Width="Auto"/>
                                <ColumnDefinition Width="Auto"/>
                                <ColumnDefinition Width="*"/>
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                                <RowDefinition Height="Auto"/>
                                <RowDefinition/>
                            </Grid.RowDefinitions>
                            
                             <!--Connecting Lines--> 
                             <!--Horizontal line--> 
                            <Rectangle x:Name="HorLn" Margin="10,0,0,0" Height="1" Stroke="#FF565656" SnapsToDevicePixels="True" StrokeDashCap="Square" StrokeDashOffset="1"/>
                             <!--Vertical line--> 
                            <Rectangle x:Name="VerLn" Width="1" Stroke="#FF565656" Margin="0,0,-2,0" Grid.RowSpan="2" SnapsToDevicePixels="true" Fill="White" StrokeDashCap="Square" StrokeDashArray="1,5"/>

                            <ToggleButton x:Name="Expander" ClickMode="Press" IsChecked="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource ExpandCollapseToggleStyle}"/>
                            <Border x:Name="Bd" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" Grid.Column="1" Padding="{TemplateBinding Padding}" SnapsToDevicePixels="true">
                                <ContentPresenter x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"/>
                            </Border>
                            <ItemsPresenter x:Name="ItemsHost" Grid.ColumnSpan="2" Grid.Column="1" Grid.Row="1"/>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsExpanded" Value="false">
                                <Setter Property="Visibility" TargetName="ItemsHost" Value="Collapsed"/>
                            </Trigger>
                            <Trigger Property="HasItems" Value="false">
                                <Setter Property="Visibility" TargetName="Expander" Value="Hidden"/>
                            </Trigger>
                            <Trigger Property="IsSelected" Value="true">
                                <Setter Property="Background" TargetName="Bd" 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 Property="Background" TargetName="Bd" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightBrushKey}}"/>
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.InactiveSelectionHighlightTextBrushKey}}"/>
                            </MultiTrigger>
                            <Trigger Property="IsEnabled" Value="false">
                                <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
                            </Trigger>

                            <!-- 當前層最後一個元素不畫下方垂直線 -->
                            <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Converter={StaticResource LineConverter}}" Value="true">
                                <Setter TargetName="VerLn" Property="Height" Value="15"/>
                                <Setter TargetName="VerLn" Property="VerticalAlignment" Value="Top"/>
                            </DataTrigger>
                            <!-- Root第一個元素不顯示上方垂直線 -->
                            <Trigger Property="TabIndex" Value="1">
                                <Setter TargetName="VerLn" Property="Margin" Value="0,12,1,0"/>
                                <Setter TargetName="VerLn" Property="Height" Value="Auto"/>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
            <Style.Triggers>
                <Trigger Property="VirtualizingPanel.IsVirtualizing" Value="true">
                    <Setter Property="ItemsPanel">
                        <Setter.Value>
                            <ItemsPanelTemplate>
                                <VirtualizingStackPanel/>
                            </ItemsPanelTemplate>
                        </Setter.Value>
                    </Setter>
                </Trigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>


    <Grid>
        <TreeView x:Name="tree" ItemsSource="{Binding Tools}">
            <TreeView.Resources>
                <local:UriToImageSourceConverter x:Key="UriToImageSource"/>
            </TreeView.Resources>
            <TreeView.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Nodes}">
                    <DockPanel>
                        <Image Source="{Binding PicPath, Converter={StaticResource UriToImageSource}}" Width="25" Height="25"/>
                        <TextBlock Text="{Binding Name}" FontSize="13" VerticalAlignment="Center" Margin="3,0,0,0"/>
                    </DockPanel>
                </HierarchicalDataTemplate>
            </TreeView.ItemTemplate>
        </TreeView>
    </Grid>
</Window>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApp2
{
    /// <summary>
    /// MainWindow.xaml 的交互邏輯
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();


            Tools = new List<NodeX>();

            for (int i = 0; i < 5; i++)
            {
                Tools.Add(new NodeX()
                {
                    Name = $"Save_{i + 1}",
                    PicPath = "pack://application:,,,/WpfApp2;component/Save.png",
                });

                for (int j = i; j < 5; j++)
                {
                    if (Tools[i].Nodes == null)
                    {
                        Tools[i].Nodes = new List<NodeX>();
                    }
                    Tools[i].Nodes.Add(new NodeX()
                    {
                        Name = $"Exit_{i + 1}_{j + 1}",
                        PicPath = "pack://application:,,,/WpfApp2;component/Exit.png",
                    });
                }
            }

            tree.ItemsSource = Tools;
        }


        public List<NodeX> Tools { get; set; }

    }

    class TreeViewLineConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            var item = value as TreeViewItem;
            ItemsControl ic = ItemsControl.ItemsControlFromItemContainer(item);
            return ic.ItemContainerGenerator.IndexFromContainer(item) == ic.Items.Count - 1;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return false;
        }
    }

    class UriToImageSourceConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            string path = (string)value;
            if (string.IsNullOrEmpty(path))
            {
                path = "pack://application:,,,/WpfApp2;component/position.ico";
            }
            return new BitmapImage(new Uri(path, UriKind.Absolute));
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return false;
        }
    }


   public class NodeX
    {

        #region Property

        /// <summary>顯示內容</summary>
        public string Name { get; set; }

        /// <summary>顯示圖片路徑</summary>
        public string PicPath { get; set; }

        /// <summary>子節點,預設null</summary>
        public IList<NodeX> Nodes { get; set; }

        #endregion

    }

}

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  • 前言 對於服務端,達到高性能、高擴展離不開非同步。對於客戶端,函數執行時間是1毫秒還是100毫秒差別不大,沒必要為這一點點時間煞費苦心。對於非同步,好多人還有誤解,如: 非同步就是多線程;非同步就是如何利用好線程池。非同步不是這麼簡單,否則微軟沒必要在非同步上花費這麼多心思。本文就介紹非同步最新的實現方式:Tas ...
  • 在工作中,會遇到需要多線程處理相應的業務需求,最典型的包括Socket的通信。 多線程處理里,就會考慮到,哪個線程先運行,哪個線程後運行的情況。 這裡我介紹一下,使用ManualResetEvent類來對線程進行阻塞和繼續操作。 它有三個重要的方法:Reset、Set和WaitOne。 1、首先介紹 ...
  • RedHat7安裝NetCore環境併發布網站 1.註冊Microsoft簽名密鑰並添加Microsoft產品提要,每台機器只需註冊一次 執行下麵的命令即可 rpm -Uvh https://packages.microsoft.com/config/rhel/7/packages-microsof ...
  • 學習劉鐵猛老師《C#語言入門詳解》視頻,針對其中重點知識點進行總結。 1、什麼是類型? 類型又稱為數據類型(Data Type),數據類型在數據結構中的定義是一個值的集合以及定義在這個值集上的一組操作。 可以簡單理解為數據在記憶體中存儲的“型號”;小記憶體容納大尺寸數據會丟失精準度,發生錯誤;而大記憶體容 ...
  • 在WPF用戶界面中,繪製2D圖形內容的最簡單方法是使用形狀(shape)——專門用於表示簡單的直線、橢圓、矩形以及多變形的一些類。從技術角度看,形狀就是所謂的繪圖圖元(primitive)。可組合這些基本元素來創建更複雜的圖形。 關於WPF中形狀的重要細節是,它們都繼承自FrameworkEleme ...
一周排行
  • 上一篇文章(https://www.cnblogs.com/meowv/p/12943699.html)完成了項目的全局異常處理和日誌記錄。 在日誌記錄中使用的靜態方法有人指出寫法不是很優雅,遂優化一下上一篇中日誌記錄的方法,具體操作如下: 在.ToolKits層中新建擴展方法Log4NetExte ...
  • 先安裝幾個包 獲取地址如下https://www.nuget.org/packages/QRCoder/https://www.nuget.org/packages/SixLabors.Fonts/https://www.nuget.org/packages/SixLabors.ImageSharp ...
  • 0. 前言 前一篇我們詳細的介紹了SqlSugar的增刪改查,那些已經滿足我們在日常工程開發中的使用了。但是還有一點點在開發中並不常用,但是卻非常有用的方法。接下來讓我們一起來看看還有哪些有意思的內容。 1. 不同尋常的查詢 之前介紹了針對單個表的查詢,同樣也是相對簡單的查詢模式。雖然開發完全夠用, ...
  • 最新.net core 圖片合併生成二維碼合成圖片 圖片添加文字 先安裝幾個包 獲取地址如下 https://www.nuget.org/packages/QRCoder/ https://www.nuget.org/packages/SixLabors.Fonts/ https://www.nug ...
  • 前言 之前我寫過一篇關於 Blazor WebAssembly 的文章瀏覽器中的 .Net Core —— Blazor WebAssembly 初體驗,如今已經更新到 RC-1,與預覽版有著較大的差異,為此補充這篇文章。 正文 與預覽版的主要差異 1、這次的候選版修改了大部分包名和命名空間,因此無 ...
  • 藍牙設置相關界面,以下是通過C#方式打開的幾個方式,記錄一下 藍牙設置界面 1.控制面板命令bthprops.cpl 可以用控制面板 control+bthprops.cpl,也可以直接bthprops.cpl。更多的命令見:所有運行命令指令大全、CMD & CPL:快捷系統命令和控制面板命令 bt ...
  • 一:背景 1. 講故事 去年阿裡聚石塔上的所有isv簡訊通道全部對接阿裡通信,我們就做了對接改造,使用阿裡提供的.net sdk。 網址:https://help.aliyun.com/document_detail/114480.html 同事當時使用的是ons-.net v1.1.3版本,程式上 ...
  • 一.相關介紹 Dockerfile:關於Dockerfile的使用說明,我在文章《讓.NetCore程式跑在任何有docker的地方》中有說到,這裡不在贅述,需要的可以先看下,本文主要介紹Jenkinsfile結合dockerfile配合使用,自動構建.NetCore應用程式。 Jenkinsfil ...
  • 當用戶嚮應用程式發出請求時,伺服器將解析該請求,生成響應,然後將結果發送給客戶端。用戶可能會在伺服器處理請求的時候中止請求。就比如說用戶跳轉到另一個頁面中獲取說關閉頁面。在這種情況下,我們希望停止所有正在進行的工作,以浪費不必要的資源。例如我們可能要取消SQL請求、http調用請求、CPU密集型操作 ...
  • 在.NET中,我們可以通過Task.WhenAll用來等待多個任務。任務完成之後,我們可以使用await等待他們來獲取結果。 Task<int> task1 = Task.Run(() => 1); Task<string> task2 = Task.Run(() => "hello"); awai ...