在我的程序中,当我将鼠标悬停在(MouseEnter事件)某个UserControl(这里我使用TransportOrderLineUserControl)时,应显示TransportOrderLineDetailView。
TransportOrderLineDetailView应放在我屏幕的右下角。为此,我需要知道ActualWidth& ActualHeight表示正确的展示位置。因为这两个属性需要具有不同于0的值,所以我使用DetailView.Loaded事件执行此代码。
我对其他两个对象使用完全相同的方式。它有效,但不适用于TransportOrderLineDetailView。
生成视图的代码:
TransportOrderLineDetailView tolDetailView = new TransportOrderLineDetailView(new TransportOrderLineDetailViewModel(transportOrderLine));
window.DetailContent = tolView;
tolView.Loaded += SetDetailViewOnUI;
代码隐藏视图:
public TransportOrderLineDetailView(TransportOrderLineDetailViewModel detailViewModel)
{
InitializeComponent();
DataContext = detailViewModel;
}
方法SetDetailViewOnUI:
private void SetDetailPanelOnUI(object sender, EventArgs e)
{
Canvas.SetLeft(window.DetailContentPresenter,
window.grid_Root.ActualWidth - window.DetailContentPresenter.ActualWidth);
Canvas.SetTop(window.DetailContentPresenter,
window.grid_Root.ActualHeight - window.DetailContentPresenter.ActualHeight);
}
效果良好的示例:
DriverDetailView driverDetailView = new DriverDetailView(new DriverDetailViewModel(driver));
window.DetailContent = driverDetailView;
driverDetailView.Loaded += SetDetailPanelOnUI;
更多信息
window.DetailContent:
private UserControl detailContent;
public UserControl DetailContent
{
get { return this.detailContent; }
set
{
this.detailContent = value;
OnPropertyChanged("DetailContent");
}
}
DetailContentPresenter:
<Canvas Grid.RowSpan="2" x:Name="canvas_Popup_DetailView">
<ContentPresenter Content="{Binding DetailContent}" x:Name="detailContentPresenter"/>
</Canvas>
未触发加载事件的测试:
public TransportOrderLineDetailView(TransportOrderLineDetailViewModel detailViewModel)
{
InitializeComponent();
DataContext = detailViewModel;
this.Loaded += test; //Test here
}
private void test(object sender, System.Windows.RoutedEventArgs e)
{
// method never executed
}
答案 0 :(得分:1)
找到解决方案。 有一个错误没有抛出。
我是如何找到它在Visual Studio中进行调试的 - &gt;例外 - &gt;勾选可能的例外情况。
希望这会帮助其他人遇到同样问题。 :)