Question

我已经看到使用混合行为100％可行，无法找到示例。

更好的例子是将事件args和/或发送者作为CommandParameter传递给特定命令。

Answer 1

   <i:Interaction.Triggers>
        <i:EventTrigger EventName="SizeChanged">
            <ei:CallMethodAction MethodName="WndSizeChanged"
                TargetObject="{Binding}" />
        </i:EventTrigger>
    </i:Interaction.Triggers>

结束SizeChanged方法应该是公共的，并且与它订阅的事件委托具有相同的签名。

Answer 2

创建行为的一种舒适方式是使用DelegateCommand方法，如Prism：

请在此处阅读：Prism behavior

Answer 3

Caliburn Micro有一些不错的方法可以做到这一点。

来自文档：

<Button Content="Remove"
        cal:Message.Attach="Remove($dataContext)" />

$eventArgs – Passes the Trigger’s EventArgs or input parameter to your Action. Note: This will be null for guard methods since the trigger hasn’t actually occurred.
$dataContext – Passes the DataContext of the element that the ActionMessage is attached to. This is very useful in Master/Detail scenarios where the ActionMessage may bubble to a parent VM but needs to carry with it the child instance to be acted upon.
$source – The actual FrameworkElement that triggered the ActionMessage to be sent.
$view - The view (usually a UserControl or Window) that is bound to the ViewModel.
$executionContext - The actions's execution context, which contains all the above information and more. This is useful in advanced scenarios.
$this - The actual ui element to which the action is attached.

如何使用事件args传递将事件绑定到ViewModel上的方法。 Silverlight 4

3 个答案: