WPF 自定义列表筛选 自定义TreeView模板 自定义ListBox模板
有很多项目，都有数据筛选的操作。下面提供一个案例，给大家做参考。
左侧是数据源，搜索框加TreeView控件，右侧是ListBox控件。在左侧数据列点击添加数据，然后点击确定，得到所筛选的数据。
下面直接看代码吧，比较好理解~
筛选控件做成用户控件，当然也可以直接放在主界面，如果不复用的话。数据源都是固定的，实际用的话，新建个ViewModel将数据源绑定就行了。
1、筛选控件界面：
<UserControl x:Class="WpfApplication17.SelectControl"
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:wpfApplication17="clr-namespace:WpfApplication17"
mc:Ignorable="d"
d:DesignHeight="400" d:DesignWidth="412" Background="LightSkyBlue">
<UserControl.Resources>
<ImageBrush x:Key="ImageBrushAddBlue" ImageSource="AddGreen.png"></ImageBrush>
<ImageBrush x:Key="ImageBrushAddGray" ImageSource="AddGray.png"></ImageBrush>
<Style x:Key="ScrollBarPageButton" TargetType="{x:Type RepeatButton}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="IsTabStop" Value="false" />
<Setter Property="Focusable" Value="false" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type RepeatButton}">
<Border Background="Transparent" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="ScrollBarThumb" TargetType="{x:Type Thumb}">
<Setter Property="SnapsToDevicePixels" Value="True" />
<Setter Property="OverridesDefaultStyle" Value="true" />
<Setter Property="IsTabStop" Value="false" />
<Setter Property="Focusable" Value="false" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Thumb}">
<Border CornerRadius="2" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="1" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <ControlTemplate x:Key="VerticalScrollBar" TargetType="{x:Type ScrollBar}">
<Grid>
<Border CornerRadius="2" Width="0.5" Background="#FF046BFF" />
<Track x:Name="PART_Track" IsDirectionReversed="true">
<Track.DecreaseRepeatButton>
<RepeatButton Style="{StaticResource ScrollBarPageButton}" Command="ScrollBar.PageUpCommand" />
</Track.DecreaseRepeatButton>
<Track.Thumb>
<Thumb Style="{StaticResource ScrollBarThumb}" Margin="4,0,4,0" Background="DodgerBlue"></Thumb>
</Track.Thumb>
<Track.IncreaseRepeatButton>
<RepeatButton Style="{StaticResource ScrollBarPageButton}" Command="ScrollBar.PageDownCommand" />
</Track.IncreaseRepeatButton>
</Track>
</Grid>
</ControlTemplate> <ControlTemplate x:Key="ScrollViewerControlTemplate1" TargetType="{x:Type ScrollViewer}">
<Grid x:Name="Grid" Background="{TemplateBinding Background}">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<Rectangle x:Name="Corner" Grid.Column="1" Fill="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Grid.Row="1"/>
<ScrollContentPresenter x:Name="PART_ScrollContentPresenter" CanContentScroll="{TemplateBinding CanContentScroll}" CanHorizontallyScroll="False" CanVerticallyScroll="False" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}" Grid.Column="0" Margin="{TemplateBinding Padding}" Grid.Row="0"/>
<ScrollBar x:Name="PART_VerticalScrollBar" AutomationProperties.AutomationId="VerticalScrollBar" Cursor="Arrow" Grid.Column="1"
Maximum="{TemplateBinding ScrollableHeight}" Minimum="0" Grid.Row="0" Visibility="{TemplateBinding ComputedVerticalScrollBarVisibility}"
Value="{Binding VerticalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportHeight}"
Template="{StaticResource VerticalScrollBar}"/>
<ScrollBar x:Name="PART_HorizontalScrollBar" AutomationProperties.AutomationId="HorizontalScrollBar" Cursor="Arrow" Grid.Column="0" Maximum="{TemplateBinding ScrollableWidth}" Minimum="0" Orientation="Horizontal" Grid.Row="1" Visibility="{TemplateBinding ComputedHorizontalScrollBarVisibility}" Value="{Binding HorizontalOffset, Mode=OneWay, RelativeSource={RelativeSource TemplatedParent}}" ViewportSize="{TemplateBinding ViewportWidth}"/>
</Grid>
</ControlTemplate>
<!--对象树子模板-->
<DataTemplate x:Key="TreeItemTemplate" DataType="TreeViewItem">
<Grid Margin="50,0,0,0" Height="28">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="30"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Name}" Foreground="White" FontSize="15" VerticalAlignment="Center" HorizontalAlignment="Left" Margin="10,0"/>
<Button x:Name="BtnAdd" Grid.Column="1" Background="Transparent" VerticalAlignment="Center" HorizontalAlignment="Center" Click="BtnAdd_OnClick">
<Button.Template>
<ControlTemplate TargetType="Button">
<Grid>
<Rectangle x:Name="BtnRetangle" Height="20" Width="20" Stroke="Transparent" StrokeThickness="1"
VerticalAlignment="Center" HorizontalAlignment="Center">
</Rectangle>
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" Content="{TemplateBinding Content}"></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="BtnRetangle" Property="Height" Value="22"></Setter>
<Setter TargetName="BtnRetangle" Property="Width" Value="22"></Setter>
</Trigger>
<DataTrigger Binding="{Binding IsChecked}" Value="true">
<Setter TargetName="BtnRetangle" Property="Fill" Value="{StaticResource ImageBrushAddGray}"></Setter>
<Setter Property="ToolTip" Value="已添加"></Setter>
</DataTrigger>
<DataTrigger Binding="{Binding IsChecked}" Value="false">
<Setter TargetName="BtnRetangle" Property="Fill" Value="{StaticResource ImageBrushAddBlue}"></Setter>
<Setter Property="ToolTip" Value="添加"></Setter>
</DataTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>
</Grid>
</DataTemplate> <Style TargetType="TreeViewItem">
<Setter Property="Background" Value="Transparent" />
<Setter Property="IsExpanded" Value="True"></Setter>
<Setter Property="HeaderTemplate">
<Setter.Value>
<HierarchicalDataTemplate ItemsSource="{Binding TreeViewItems,Mode=TwoWay}" ItemTemplate="{StaticResource TreeItemTemplate}">
<StackPanel Orientation="Horizontal" Height="28" VerticalAlignment="Center" HorizontalAlignment="Left">
<Image Source="folder.png" VerticalAlignment="Center" Height="17" Margin="10,0"/>
<TextBlock Text="{Binding Name}" Margin="5,0,0,0" FontSize="15" VerticalAlignment="Center" Foreground="White"/>
</StackPanel>
</HierarchicalDataTemplate>
</Setter.Value>
</Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TreeViewItem}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition />
</Grid.RowDefinitions>
<VisualStateManager.VisualStateGroups>
<VisualStateGroup x:Name="SelectionStates">
<VisualState x:Name="Selected">
<Storyboard>
<ColorAnimationUsingKeyFrames Storyboard.TargetName="Bd" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)" >
<EasingColorKeyFrame KeyTime="0" Value="Transparent" />
</ColorAnimationUsingKeyFrames>
</Storyboard>
</VisualState> <VisualState x:Name="Unselected" />
<VisualState x:Name="SelectedInactive">
<Storyboard>
<ColorAnimationUsingKeyFrames Storyboard.TargetName="Bd" Storyboard.TargetProperty="(Panel.Background).(SolidColorBrush.Color)">
<EasingColorKeyFrame KeyTime="0" Value="Transparent" />
</ColorAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
</VisualStateGroup>
<VisualStateGroup x:Name="ExpansionStates">
<VisualState x:Name="Expanded">
<Storyboard>
<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="ItemsHost">
<DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
</VisualState>
<VisualState x:Name="Collapsed" />
</VisualStateGroup>
</VisualStateManager.VisualStateGroups>
<Border x:Name="Bd" Grid.Column="0" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}">
<ContentPresenter x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/>
</Border>
<ItemsPresenter x:Name="ItemsHost" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="2" Visibility="Collapsed" />
</Grid>
<ControlTemplate.Triggers>
<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>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style> <Style x:Key="ItemContainer" TargetType="{x:Type ListBoxItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Border x:Name="IconBorder" Background="Transparent" CornerRadius="4" BorderThickness="0">
<ContentPresenter />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="IconBorder" Property="BitmapEffect">
<Setter.Value>
<OuterGlowBitmapEffect GlowColor="Transparent" GlowSize="5" />
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
</Grid.ColumnDefinitions>
<!--待选择列表-->
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="40"></RowDefinition>
<RowDefinition ></RowDefinition>
</Grid.RowDefinitions>
<wpfApplication17:SearchControl x:Name="BtnSearch" Margin="30,0,10,0" VerticalAlignment="Center" HorizontalAlignment="Left" OnSearch="BtnSearch_OnOnSearch"></wpfApplication17:SearchControl>
<ScrollViewer Grid.Row="1" Margin="20,0,0,0" Template="{StaticResource ScrollViewerControlTemplate1}" CanContentScroll="True">
<TreeView x:Name="MyTreeView" ScrollViewer.VerticalScrollBarVisibility="Disabled" HorizontalAlignment="Stretch" Background="Transparent" BorderBrush="Transparent"></TreeView>
</ScrollViewer>
</Grid>
<!--已选择列表-->
<Grid Grid.Column="1">
<Grid.RowDefinitions>
<RowDefinition Height="40"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock Text="已选择列表" Foreground="White" FontSize="15" VerticalAlignment="Center" Margin="10"></TextBlock>
<ListBox x:Name="RightListBox" Grid.Row="1" HorizontalAlignment="Right" Margin="50,0" Background="Transparent" ItemContainerStyle="{StaticResource ItemContainer}" FocusVisualStyle="{x:Null}">
<ListBox.Template>
<ControlTemplate>
<StackPanel Background="Transparent" IsItemsHost="True"></StackPanel>
</ControlTemplate>
</ListBox.Template>
<ListBox.ItemTemplate>
<DataTemplate>
<Grid Height="28">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
<ColumnDefinition Width="40"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Name}" Foreground="White" FontSize="15" VerticalAlignment="Center" HorizontalAlignment="Center"/>
<Button x:Name="BtnDelete" Grid.Column="1" Background="Transparent" ToolTip="移除" VerticalAlignment="Center" HorizontalAlignment="Center" Click="BtnRemove_OnClick">
<Button.Template>
<ControlTemplate TargetType="Button">
<Grid>
<Rectangle x:Name="BtnRetangle" Height="17" Width="17" Stroke="Transparent" StrokeThickness="1" VerticalAlignment="Center" HorizontalAlignment="Center">
<Rectangle.Fill>
<ImageBrush ImageSource="Delete.png"></ImageBrush>
</Rectangle.Fill>
</Rectangle>
<ContentPresenter VerticalAlignment="Center" HorizontalAlignment="Center" Content="{TemplateBinding Content}"></ContentPresenter>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="True">
<Setter TargetName="BtnRetangle" Property="Height" Value="19"></Setter>
<Setter TargetName="BtnRetangle" Property="Width" Value="19"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Button.Template>
</Button>
</Grid>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</Grid>
</Grid>
</UserControl>
2、后台：
public partial class SelectControl : UserControl
{
private List<TreeViewModel> ItemSoure { get; set; }
public SelectControl()
{
InitializeComponent();
ItemSoure = new List<TreeViewModel>() { new TreeViewModel()
{
Name = "前端设计",
TreeViewItems = new List<TreeViewModel>()
{
new TreeViewModel(){Name = "Html/Css/Js"},
new TreeViewModel(){Name = "WPF"},
new TreeViewModel(){Name = "Winform"},
new TreeViewModel(){Name = "Webform"},
new TreeViewModel(){Name = "U3D"},
}
},
new TreeViewModel()
{
Name = "后台语言",
TreeViewItems = new List<TreeViewModel>()
{
new TreeViewModel(){Name = "C#"},
new TreeViewModel(){Name = "VB.Net"},
new TreeViewModel(){Name = "Java"},
new TreeViewModel(){Name = "PHP"},
new TreeViewModel(){Name = "C"},
new TreeViewModel(){Name = "Python"},
new TreeViewModel(){Name = "C++"},
new TreeViewModel(){Name = "Ruby"},
}
},new TreeViewModel()
{
Name = "数据库",
TreeViewItems = new List<TreeViewModel>()
{
new TreeViewModel(){Name = "SqlServer"},
new TreeViewModel(){Name = "MySql"},
new TreeViewModel(){Name = "Oracle"},
new TreeViewModel(){Name = "SqlLite"},
new TreeViewModel(){Name = "MongoDB"},
new TreeViewModel(){Name = "PLSql"},
}
}
};
MyTreeView.ItemsSource = ItemSoure;
RightListBox.ItemsSource = null;
RightListBox.ItemsSource = new List<TreeViewModel>();
} /// <summary>
/// 选择
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnAdd_OnClick(object sender, RoutedEventArgs e)
{
Button button = sender as Button;
var viewModel = button.DataContext as TreeViewModel;
if (!viewModel.IsChecked)
{
viewModel.IsChecked = true;
var selectList = RightListBox.ItemsSource as List<TreeViewModel>;
selectList.Add(viewModel);
RightListBox.ItemsSource = null;
RightListBox.ItemsSource = selectList;
}
}
/// <summary>
/// 移除
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnRemove_OnClick(object sender, RoutedEventArgs e)
{
Button button = sender as Button;
var viewModel = button.DataContext as TreeViewModel;
viewModel.IsChecked = false;
var selectList = RightListBox.ItemsSource as List<TreeViewModel>;
selectList.Remove(viewModel);
RightListBox.ItemsSource = null;
RightListBox.ItemsSource = selectList;
}
/// <summary>
/// 搜索
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnSearch_OnOnSearch(object sender, SearchEventArgs e)
{
string serachText=e.SearchText;
var items=new List<TreeViewModel>();
if (string.IsNullOrWhiteSpace(serachText))
{
MyTreeView.ItemsSource = ItemSoure;
return;
}
foreach (var item in ItemSoure)
{
var childrenItems=item.TreeViewItems.Where(o => o.Name.Contains(serachText)).ToList();
if (childrenItems.Count>)
{
var parentItem=new TreeViewModel(){Name = item.Name};
parentItem.TreeViewItems = childrenItems;
items.Add(parentItem);
}
}
MyTreeView.ItemsSource = items;
}
} public class TreeViewModel : INotifyPropertyChanged
{
public string Name { get; set; } private bool _isChecked = false;
public bool IsChecked
{
get { return _isChecked; }
set
{
_isChecked = value;
if (this.PropertyChanged != null)
{
this.PropertyChanged.Invoke(this, new PropertyChangedEventArgs("IsChecked"));
}
}
} public List<TreeViewModel> TreeViewItems { get; set; } public event PropertyChangedEventHandler PropertyChanged; [NotifyPropertyChangedInvocator]
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
} }
GitHub下载此案例Demo:https://github.com/Kybs0/DataSelectControlDemo
TreeViewItem添加MouseOver/Hover效果：
当有HierarchicalDataTemplate时，下级Item的MouseOver状态Trigger设置，可以通过里面的元素直接设置。
<Trigger SourceName="Bd" Property="IsMouseOver" Value="True">
<Setter TargetName="Bd" Property="Background" Value="{DynamicResource Brush.Highlight}"/>
</Trigger>
因为TreeViewItem的MouseOver关联的是整个TreeViewItem和其下级的状态。。
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