这是满足您需求的 WPF 解决方案。我发布它是因为您告诉我它可能对您有用。它在很大程度上超越了您希望在 winforms 中实现的任何东西,这是一种非常有限且过时的技术。
这是它在我的屏幕上的样子:
我正在使用一些简单的 ViewModel 来表示数据:
ListItemViewModel(“基础”之一):
public class ListItemViewModel: ViewModelBase
{
private string _displayName;
public string DisplayName
{
get { return _displayName; }
set
{
_displayName = value;
NotifyPropertyChange(() => DisplayName);
}
}
}
BoolListItemViewModel(用于复选框):
public class BoolListItemViewModel: ListItemViewModel
{
private bool _value;
public bool Value
{
get { return _value; }
set
{
_value = value;
NotifyPropertyChanged(() => Value);
}
}
}
SelectableListItemViewModel(用于组合框):
public class SelectableListItemViewModel: ListItemViewModel
{
private ObservableCollection<ListItemViewModel> _itemsSource;
public ObservableCollection<ListItemViewModel> ItemsSource
{
get { return _itemsSource ?? (_itemsSource = new ObservableCollection<ListItemViewModel>()); }
}
private ListItemViewModel _selectedItem;
public ListItemViewModel SelectedItem
{
get { return _selectedItem; }
set
{
_selectedItem = value;
NotifyPropertyChange(() => SelectedItem);
}
}
}
这是“主”视图模型,它包含 2 个列表和Commands
(按钮操作)
public class ListBoxSampleViewModel: ViewModelBase
{
private ObservableCollection<ListItemViewModel> _leftItems;
public ObservableCollection<ListItemViewModel> LeftItems
{
get { return _leftItems ?? (_leftItems = new ObservableCollection<ListItemViewModel>()); }
}
private ObservableCollection<ListItemViewModel> _rightItems;
public ObservableCollection<ListItemViewModel> RightItems
{
get { return _rightItems ?? (_rightItems = new ObservableCollection<ListItemViewModel>()); }
}
private DelegateCommand<ListItemViewModel> _moveToRightCommand;
public DelegateCommand<ListItemViewModel> MoveToRightCommand
{
get { return _moveToRightCommand ?? (_moveToRightCommand = new DelegateCommand<ListItemViewModel>(MoveToRight)); }
}
private void MoveToRight(ListItemViewModel item)
{
if (item != null)
{
LeftItems.Remove(item);
RightItems.Add(item);
}
}
private DelegateCommand<ListItemViewModel> _moveToLeftCommand;
public DelegateCommand<ListItemViewModel> MoveToLeftCommand
{
get { return _moveToLeftCommand ?? (_moveToLeftCommand = new DelegateCommand<ListItemViewModel>(MoveToLeft)); }
}
private void MoveToLeft(ListItemViewModel item)
{
if (item != null)
{
RightItems.Remove(item);
LeftItems.Add(item);
}
}
}
这是 Window 的整个 XAML:
<Window x:Class="WpfApplication4.Window14"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WpfApplication4"
Title="Window14" Height="300" Width="300">
<Window.Resources>
<DataTemplate DataType="{x:Type local:ListItemViewModel}">
<TextBlock Text="{Binding DisplayName}"/>
</DataTemplate>
<DataTemplate DataType="{x:Type local:BoolListItemViewModel}">
<CheckBox Content="{Binding DisplayName}" IsChecked="{Binding Value}" HorizontalAlignment="Left"/>
</DataTemplate>
<DataTemplate DataType="{x:Type local:SelectableListItemViewModel}">
<ComboBox ItemsSource="{Binding ItemsSource}" SelectedItem="{Binding SelectedItem}"
HorizontalAlignment="Stretch" MinWidth="100"/>
</DataTemplate>
</Window.Resources>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="100"/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<ListBox ItemsSource="{Binding LeftItems}"
x:Name="LeftList"/>
<StackPanel Grid.Column="1" VerticalAlignment="Center">
<Button Content="Move to Right"
Command="{Binding MoveToRightCommand}"
CommandParameter="{Binding SelectedItem,ElementName=LeftList}"/>
<Button Content="Move to Left"
Command="{Binding MoveToLeftCommand}"
CommandParameter="{Binding SelectedItem,ElementName=RightList}"/>
</StackPanel>
<ListBox ItemsSource="{Binding RightItems}"
Grid.Column="2" x:Name="RightList"/>
</Grid>
</Window>
最后,这是 Window Code-behind,它只用一些项目初始化 ViewModel:
public partial class Window14 : Window
{
public Window14()
{
InitializeComponent();
DataContext = new ListBoxSampleViewModel()
{
LeftItems =
{
new ListItemViewModel(){DisplayName = "Item1"},
new BoolListItemViewModel() {DisplayName = "Check Item 2", Value = true},
new SelectableListItemViewModel()
{
ItemsSource =
{
new ListItemViewModel() {DisplayName = "Combo Item 1"},
new BoolListItemViewModel() {DisplayName = "Check inside Combo"},
new SelectableListItemViewModel()
{
ItemsSource =
{
new ListItemViewModel() {DisplayName = "Wow, this is awesome"},
new BoolListItemViewModel() {DisplayName = "Another CheckBox"}
}
}
}
}
}
};
}
}
乍一看,这可能看起来像很多代码......但如果你花 2 秒钟来分析它......它只是“简单、简单的属性和INotifyPropertyChanged
. 这就是你在 WPF 中编程的方式。
我说的范式与你在 winforms 中可能习惯的范式完全不同,但学习它真的很值得。请注意,在我的代码中,我没有与 UI 元素进行交互。我只是创建了ViewModel
结构,然后WPF Binding System
使用提供的DataTemplates
.
我正在使用ViewModelBase
来自MVVM Light和DelegateCommand
来自WPFTutorial.net的。您可以将我的代码复制并粘贴到 a 中File -> New Project -> WPF Application
并自己查看结果(您还需要上面链接中的这两个类)
如果您需要将其集成到现有的 winforms 应用程序中,您将需要ElementHost