Wpf 当组合框位于ListView单元格中时，如何通过委托命令处理SelectionChanged事件

“”，此页显示如何扩展组合框以支持命令，但它没有提供映射到组合框的SelectedIndexChanged事件的委托命令的圆顶。现在，我面临的问题是如何处理combobox SelectedIndexChanged事件，就像它是一次性combobox情况一样：

<ComboBox SelectionChanged="ComboBox_SelectionChanged"></ComboBox>
private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    var combobox = sender as ComboBox;
    if (combobox.SelectedIndex == 0)
    { 
        //todo:
    }
}

我想这样定义方法：

private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    var combobox = sender as ComboBox;
    if (combobox.SelectedIndex == 0)
    { 
        //todo:
    }
}

但是如何将其绑定到委托命令ChangeStartModeCmd

ChangeStartModeCmd = new DelegateCommand(ChangeStartMode( 
        /*what should I pass for the method?*/));

---

您可能不需要

CommandSupportedCombobox

，因为您可以附加组合框的

SelectedItem

属性，并在ViewModel中的

setter

中调用所需的函数

Xaml

ChangeStartModeCmd = new DelegateCommand(ChangeStartMode);

private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    var combobox = sender as ComboBox;
    if (combobox.SelectedIndex == 0)
    { 
        //todo:
    }
}

ChangeStartModeCmd = new DelegateCommand(ChangeStartMode( 
        /*what should I pass for the method?*/));

<ComboBox SelectedItem="{Binding MyItem,Mode=TwoWay}" />

 public MyItem
 {
    get {return myItem;}
    set
    {
        myItem=value;
        OnPropertyChanged("MyItem");  implement INotifyPropertyChanged
        MyFavFunction(); // Function to be called
    }
 }