C# 删除列表框中的多个选择
我有一个C# 删除列表框中的多个选择,c#,wpf,mvvm,listbox,C#,Wpf,Mvvm,Listbox,我有一个ListBox,其SelectionMode属性设置为Extended,以允许在ListBox内进行多个选择。列表框绑定到一个可观察集合。我想做的是,当我按下delete键时,列表框中的选定项将从ObservableCollection中删除。我知道如何设置keybinding并使用delete键的命令,但我不知道如何从列表框中获得多个选择 以下是列表框: <ListBox ItemsSource="{Binding XtfPaths}" SelectionMod
ListBox
,其SelectionMode
属性设置为Extended
,以允许在ListBox内进行多个选择。列表框绑定到一个可观察集合
。我想做的是,当我按下delete键时,列表框中的选定项将从ObservableCollection中删除。我知道如何设置keybinding并使用delete键的命令,但我不知道如何从列表框中获得多个选择
以下是列表框:
<ListBox ItemsSource="{Binding XtfPaths}"
SelectionMode="Extended"/>
以下是viewmodel:
private ObservableCollection<String> _xtfPaths = new ObservableCollection<String>();
public ObservableCollection<String> XtfPaths
{
get { return _xtfPaths; }
set
{
if (null != value)
{
_xtfPaths = value;
OnPropertyChanged("XtfPaths");
}
}
}
private observedcollection\u xtfPaths=new observedcollection();
公共可观测收集XtfPaths
{
获取{return\u xtfPaths;}
设置
{
if(null!=值)
{
_xtfPaths=值;
OnPropertyChanged(“XtfPaths”);
}
}
}
试试这个
<Grid>
<StackPanel>
<ListBox x:Name="list" Height="200"
SelectionMode="Extended"
ItemsSource="{Binding SampleItems}" >
</ListBox>
<Button Content="Remove" Command="{Binding DeleteCommand}"
CommandParameter="{Binding ElementName=list, Path=SelectedItems}">
</Button>
</StackPanel>
</Grid>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
DataContext = new MainViewModel1();
}
}
public class MainViewModel1
{
private ObservableCollection<string> m_items;
public ObservableCollection<string> SampleItems
{
get { return m_items; }
set { m_items = value; }
}
public ICommand DeleteCommand { get; private set; }
public MainViewModel1()
{
DeleteCommand = new RelayCommand<object>(Delete, CanDelete);
var items = new ObservableCollection<string>();
var today = DateTime.Now;
for (int i = 1; i <= 10; i++)
{
items.Add("Test"+i);
}
SampleItems = items;
}
private void Delete(object obj)
{
var items = new ObservableCollection<string>();
foreach (var item in (IList)obj)
{
items.Add((string)item);
}
foreach (var item in items)
{
m_items.Remove(item);
}
}
private bool CanDelete(object obj)
{
return true;
}
}
公共部分类主窗口:窗口
{
公共主窗口()
{
初始化组件();
DataContext=新的MainViewModel1();
}
}
公共类MainViewModel1
{
私人可观察收集m_项目;
公共可观测采集样本项
{
获取{return m_items;}
设置{m_items=value;}
}
公共ICommand DeleteCommand{get;private set;}
公共主视图模型1()
{
DeleteCommand=新的RelayCommand(Delete,CanDelete);
var items=新的ObservableCollection();
var today=DateTime.Now;
对于(int i=1;i