無法在ListView上捕獲事件SelectedItem以ViewModel？

在MasterPage中，有2個框架。主頁是在第一幀 - >無法在ListView上捕獲事件SelectedItem以ViewModel？

<Page.DataContext> 
    <viewmodel:HomeVM/> 
</Page.DataContext> 
<ListView x:Name="lstHome" SelectedItem="{Binding lstHome_ItemClick}" 
      Margin="10" ItemsSource="{Binding statusList}">

在HomeVM：

/// <summary> 
/// ItemClick of ListView 
/// </summary> 
private Status _lstHome_ItemClick; 
public Status lstHome_ItemClick 
{ 
    get 
    { 
     return _lstHome_ItemClick; 
    } 
    set 
    { 
     if(_lstHome_ItemClick==value) 
     { 
      return; 
     } 
     _lstHome_ItemClick = value; 
     //Excute the below code when the selection of listview has changed 
     ItemClick(_lstHome_ItemClick); 

     PropertyChanged?.Invoke(this,new PropertyChangedEventArgs("lstHome_ItemClick")); 
    } 
} 

public event PropertyChangedEventHandler PropertyChanged;

當我點擊Listview-項目>不叫lstHome_ItemClick。爲什麼？

來源

2016-12-03 Thanh sharePoint

是'PageView'中的ListView嗎？嘗試在'ListView'上設置'DataContext'，看看它是否在主頁中工作 – Multinerd

ListView。讓DataContext =「{Binding statusList}」，然後ListView爲null –

在'Binding'中設置'UpdateSourceTrigger = PropertyChanged'。 – AnjumSKhan

將binding設置爲TwoWay。在UWP the default上是OneWay。

<ListView x:Name="lstHome" SelectedItem="{Binding lstHome_ItemClick, Mode=TwoWay}" 
Margin="10" ItemsSource="{Binding statusList}" />

來源

2016-12-03 17:23:08

無法在ListView上捕獲事件SelectedItem以ViewModel？

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