Question

我正在尝试创建一个WPF应用程序，允许用户创建一个动态加载了一些xaml文件的自定义gui。

这需要两个文件：

包含gui元素的主要xaml文件

<Grid>
    <Button Name="button1" Height="82" Width="132">Button Text</Button>
    <TextBlock Text="Text Data"/>
</Grid>

以及包含事件的事件文件：

<Events>
    <Event Object="button1" Event="Click" File="button1OnClick"/>
</Events>

我正确加载文件并显示gui，但不会触发事件（在此示例中为按钮单击事件）。我用这段代码（以及它的一些变种）尝试了它：

/*
scroll = parent object of the custom gui (ScrollViewer)
events = List of the events in the events file
evnt.Event == "Click"
evnt.ObjectName == "button1"
evnt.File == "button1OnClick"
*/

List<DependencyObject> childs = scroll.GetLogicalChilds();
foreach (DependencyObject control in childs)
{
    Control c = null;
    if(control is DependencyObject)
        c = control as Control;

    if (c == null)
        continue;

    foreach(PluginEvent evnt in events)
    {
        if (evnt.ObjectName == c.Name) //button1 == button1
        {
            RoutedEvent routedEvent = EventManager.RegisterRoutedEvent(
                evnt.Event,
                RoutingStrategy.Bubble,
                typeof(RoutedEventHandler),
                c.GetType());

            Action handler = () => Lua.DoFile(evnt.File + ".lua");
            c.AddHandler(routedEvent, handler);
        }
    }
}

在此示例中，当我单击名为button1OnClick.lua的按钮但我收到错误时，我尝试运行button1文件

处理程序类型不匹配。

我不知道如何解决这个问题。有人可以解释一下在触发事件时如何运行lua文件吗？

目标是在触发事件时运行在事件文件中声明的文件。

EDIT1：
我用这段代码修复了异常

RoutedEvent routedEvent = EventManager.RegisterRoutedEvent(evnt.Event, RoutingStrategy.Bubble, typeof(RoutedEventHandler), c.GetType());
RoutedEventHandler handler = (s, a) => Lua.DoFile(evnt.File + ".lua");

c.AddHandler(routedEvent, handler);

但如果单击按钮

则不会触发

Answer 1

更改此

Action handler = () => Lua.DoFile(evnt.File + ".lua");
c.AddHandler(routedEvent, handler);

更多适当的事件处理程序

c.AddHandler(routedEvent, (delegate)(s, o) => Lua.DoFile(evnt.File + ".lua")); // not sure

根据您的评论（^^）：

Action<object,RoutedEventHandler> handler = (s, o) => Lua.DoFile(evnt.File + ".lua");
c.AddHandler(routedEvent, handler);

如何为动态加载的gui创建和分配事件？

1 个答案: