手机怎么搭建网站,大连营销型网站建设,wordpress 翻译制作,朝阳区规划网站WPF的数据绑定系统自动生成列表项对象#xff0c;为单个项应用所需的样式不是很容易。解决方案是ItemContainerStyle 属性。如果设置了ItemContainerStyle 属性#xff0c;当创建列表项时#xff0c;列表控件会将其向下传递给每个项。对于ListBox控件#xff0c;每个项有Li…WPF的数据绑定系统自动生成列表项对象为单个项应用所需的样式不是很容易。解决方案是ItemContainerStyle 属性。如果设置了ItemContainerStyle 属性当创建列表项时列表控件会将其向下传递给每个项。对于ListBox控件每个项有ListBoxItem 对象表示对于CombBox 控件则对应是 CombBoxItem。
交替条目样式
WPF通过两个属性为交替项提供内置支持AlternationCount 和 AlternationIndex。
WindowWindow.ResourcesStyle x:KeylistBoxItemStyle TargetType{x:Type ListBoxItem}Setter PropertyBackground ValueLightBlue/Setter PropertyMargin Value5/SetterSetter PropertyPadding Value5/SetterStyle.TriggersTrigger PropertyItemsControl.AlternationIndex Value1Setter PropertyBackground ValueLightBlue//TriggerTrigger PropertyIsSelected ValueTrueSetter PropertyBackground ValueDarkRed/Setter PropertyForeground ValueWhite/Setter PropertyBorderBrush ValueBlack/Setter PropertyBorderThickness Value10//Trigger/Style.Triggers/Style/Window.ResourcesGrid x:NamemyGridGrid.ColumnDefinitionsColumnDefinition/ColumnDefinition//Grid.ColumnDefinitionsGrid.RowDefinitionsRowDefinition/RowDefinition/RowDefinition MinHeight100//Grid.RowDefinitionsListBox Grid.Row0 Grid.Column0 ItemContainerStyle{StaticResource listBoxItemStyle} ItemsSource{Binding PathOrders} AlternationCount2 DisplayMemberPathPrice//Grid
/Window
也可以直接将样式设置到ListBox层次
WindowWindow.ResourcesStyle x:KeycheckBoxListStyle TargetType{x:Type ListBox}Setter PropertySelectionMode ValueMultiple/SetterSetter PropertyItemContainerStyleSetter.ValueStyle TargetType{x:Type ListBoxItem}Setter PropertyMargin Value2/Setter PropertyTemplateSetter.ValueControlTemplate TargetType{x:Type ListBoxItem}CheckBox IsChecked{Binding PathIsSelected,RelativeSource{RelativeSource TemplatedParent},ModeTwoWay}ContentPresenter//CheckBox/ControlTemplate/Setter.Value/Setter/Style/Setter.Value/Setter/Style/Window.ResourcesGrid x:NamemyGridGrid.ColumnDefinitionsColumnDefinition/ColumnDefinition//Grid.ColumnDefinitionsGrid.RowDefinitionsRowDefinition/RowDefinition/RowDefinition MinHeight100//Grid.RowDefinitionsListView Grid.Row1 Grid.Column0 Style{StaticResource checkBoxListStyle} ItemsSource{Binding PathOrders} DisplayMemberPathPrice NamecheckButtonListBox//Grid
/Window
样式选择器
可以使用样式选择器来为不同的子项提供不同的样式自定义样式选择器需要继承自 StyleSelector 类需要重写 SelectStyle() 方法。
public class SingleCriteriaHighlightStyleSelector : StyleSelector
{public Style DefaultStyle { get; set; }public Style HighlightStyle { get; set; }public string PropertyToEvaluate { get; set; }public string PropertyValueToHighlight { get; set; }public override Style SelectStyle(object item, DependencyObject container){Order order (Order)item;if (order.Price 1000){return HighlightStyle;}else{return DefaultStyle;}}
}
完整的代码文件
MainWindow.xaml
Window x:ClassListBoxStyle.MainWindowxmlnshttp://schemas.microsoft.com/winfx/2006/xaml/presentationxmlns:xhttp://schemas.microsoft.com/winfx/2006/xamlxmlns:dhttp://schemas.microsoft.com/expression/blend/2008xmlns:mchttp://schemas.openxmlformats.org/markup-compatibility/2006xmlns:localclr-namespace:ListBoxStylemc:IgnorabledTitleMainWindow Height450 Width800Window.ResourcesStyle x:KeylistBoxItemStyle TargetType{x:Type ListBoxItem}Setter PropertyBackground ValueBlue/Setter PropertyMargin Value5/SetterSetter PropertyPadding Value5/SetterStyle.TriggersTrigger PropertyItemsControl.AlternationIndex Value1Setter PropertyBackground ValueLightBlue//TriggerTrigger PropertyIsSelected ValueTrueSetter PropertyBackground ValueDarkRed/Setter PropertyForeground ValueWhite/Setter PropertyBorderBrush ValueBlack/Setter PropertyBorderThickness Value10//Trigger/Style.Triggers/StyleStyle x:KeyradioButtonListStyle TargetType{x:Type ListBoxItem}Setter PropertyBackground ValueBlue/Setter PropertyMargin Value5/SetterSetter PropertyTemplateSetter.ValueControlTemplate TargetType{x:Type ListBoxItem}RadioButton FocusableFalse IsChecked{Binding PathIsSelected,RelativeSource{RelativeSource TemplatedParent},ModeTwoWay}ContentPresenter//RadioButton/ControlTemplate/Setter.Value/Setter/StyleStyle x:KeycheckBoxListStyle TargetType{x:Type ListBox}Setter PropertySelectionMode ValueMultiple/SetterSetter PropertyItemContainerStyleSetter.ValueStyle TargetType{x:Type ListBoxItem}Setter PropertyMargin Value2/Setter PropertyTemplateSetter.ValueControlTemplate TargetType{x:Type ListBoxItem}CheckBox IsChecked{Binding PathIsSelected,RelativeSource{RelativeSource TemplatedParent},ModeTwoWay}ContentPresenter//CheckBox/ControlTemplate/Setter.Value/Setter/Style/Setter.Value/Setter/StyleStyle x:KeyDefaultStyle TargetType{x:Type ListBoxItem}Setter PropertyBackground ValueLightYellow /Setter PropertyPadding Value2 //StyleStyle x:KeyHighlightStyle TargetType{x:Type ListBoxItem}Setter PropertyBackground ValueLightSteelBlue /Setter PropertyFontWeight ValueBold /Setter PropertyPadding Value2 //Style/Window.ResourcesGrid x:NamemyGridGrid.ColumnDefinitionsColumnDefinition/ColumnDefinition//Grid.ColumnDefinitionsGrid.RowDefinitionsRowDefinition/RowDefinition/RowDefinition MinHeight100//Grid.RowDefinitionsListBox Grid.Row0 Grid.Column0 ItemContainerStyle{StaticResource listBoxItemStyle} ItemsSource{Binding PathOrders} AlternationCount3 DisplayMemberPathPrice/ListBox Grid.Row0 Grid.Column1 ItemContainerStyle{StaticResource radioButtonListStyle} ItemsSource{Binding PathOrders} DisplayMemberPathPrice NameradioButtonListBox/ListView Grid.Row1 Grid.Column0 Style{StaticResource checkBoxListStyle} ItemsSource{Binding PathOrders} DisplayMemberPathPrice NamecheckButtonListBox/ListBox Grid.Row1 Grid.Column1 ItemsSource{Binding PathOrders} DisplayMemberPathPrice NamestyleSelectorListBoxListBox.ItemContainerStyleSelectorlocal:SingleCriteriaHighlightStyleSelector DefaultStyle{StaticResource DefaultStyle} HighlightStyle{StaticResource HighlightStyle}/local:SingleCriteriaHighlightStyleSelector/ListBox.ItemContainerStyleSelector/ListBoxButton Grid.Row4 ClickButton_ClickTest/ButtonButton Grid.Row4 Grid.Column1 ClickButton_Click_1Test/Button/Grid
/WindowMainWindow.xaml.cs
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
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 ListBoxStyle;public class ViewModelBase : INotifyPropertyChanged
{public event PropertyChangedEventHandler? PropertyChanged;protected virtual void OnPropertyChanged([CallerMemberName] string? propertyName null){PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));}protected virtual bool SetPropertyT(ref T member, T value, [CallerMemberName] string? propertyName null){if (EqualityComparerT.Default.Equals(member, value)){return false;}member value;OnPropertyChanged(propertyName);return true;}
}
public class Order : ViewModelBase
{public decimal price 0;public decimal Price { get price; set SetProperty(ref price, value); }public int volume 0;public int Volume { get volume; set SetProperty(ref volume, value); }public DateTime orderDate DateTime.Now;public DateTime OrderDate { get orderDate; set SetProperty(ref orderDate, value); }public string image string.Empty;public string Image { get image; set SetProperty(ref image, value); }
}public class SingleCriteriaHighlightStyleSelector : StyleSelector
{public Style DefaultStyle { get; set; }public Style HighlightStyle { get; set; }public string PropertyToEvaluate { get; set; }public string PropertyValueToHighlight { get; set; }public override Style SelectStyle(object item, DependencyObject container){Order order (Order)item;if (order.Price 1000){return HighlightStyle;}else{return DefaultStyle;}}
}public partial class MainWindow : Window
{public MainWindow(){InitializeComponent();myGrid.DataContext this;Order order1 new Order();Order order2 new Order();Order order3 new Order();Order order4 new Order();order1.Price 100;order1.Volume 10;order2.Price 1000;order2.Volume 100;order3.Price 10000;order3.Volume 1000;order4.Price 100000;order4.Volume 10000;Orders.Add(order1);Orders.Add(order2);Orders.Add(order3);Orders.Add(order4);}public ObservableCollectionOrder Orders {get; set;} new ();private void Button_Click(object sender, RoutedEventArgs e){string message ;if(radioButtonListBox.SelectedItem ! null){Order order (Order)radioButtonListBox.SelectedItem;message order.Price.ToString();}message \n;foreach (var selectedItem in checkButtonListBox.SelectedItems){Order order (Order)selectedItem;message order.Price.ToString() ;}MessageBox.Show(message);}private void Button_Click_1(object sender, RoutedEventArgs e){Orders[1].Price 50000;StyleSelector selector styleSelectorListBox.ItemContainerStyleSelector;styleSelectorListBox.ItemContainerStyleSelector null;styleSelectorListBox.ItemContainerStyleSelector selector;}
}
