我在堆栈面板中有同一用户控件的多个实例,每个用户控件中都有一个按钮。
当我单击此按钮时,我希望它打开一个新窗口,然后禁用包含所有用户控件的堆栈面板,这样就不能同时打开该窗口的多个实例。然后,我希望能够在用户关闭新打开的窗口后重新启用堆栈面板。
当我的按钮位于主窗口XAML内而不是用户控件的一部分时,当前有以下代码:
private void ButtonClick(object sender, RoutedEventArgs e)
{
RouteViewer Rv = new RouteViewer((sender as Button).Tag).ToString());
Rv.Owner = this;
Rv.Show();
StackPanel.IsEnabled = false; //Disables the stackpanel
Rv.Closed += new EventHandler(RvClosed);
}
void RvClosed(object sender, EventArgs e)
{
StackPanel.IsEnabled = true; //Re-enables the stackpanel
}
您可以看到问题是由于堆栈面板不在用户控件中。我一直在搜寻,怀疑答案是否与路由事件有关,我们将不胜感激。
答案 0 :(得分:1)
看看这个网站here,您将要使用事件“冒泡”。
代码可能看起来像这样: C#在用户控件中:
private void ButtonClick(object sender, RoutedEventArgs e)
{
RouteViewer Rv = new RouteViewer(((sender as Button).Tag).ToString());
Rv.Show();
var newEventArgs = new RoutedEventArgs(RvOpenedEvent);
RaiseEvent(newEventArgs);
}
public static readonly RoutedEvent RvOpenedEvent = EventManager.RegisterRoutedEvent(
"RvOpened",
RoutingStrategy.Bubble,
typeof(RoutedEventHandler),
typeof(ClassName));
public event RoutedEventHandler RvOpened
{
add { AddHandler(RvOpenedEvent, value); }
remove { RemoveHandler(RvOpenedEvent, value); }
}
然后在主窗口XMAL中:
<UserControl:Name RvOpened="RouteViewerOpened"/>
然后在主窗口C#中:
private void RouteViewerOpened(object sender, RoutedEventArgs e)
{
ServiceStack.IsEnabled = false;
e.Handled = true;
}