使用MVVM时如何在interaction.Trigger中将事件参数作为参数传递? [英] How to pass a event argument as a parameter in interaction.Trigger when using MVVM?
问题描述
基本上我的自定义类中有一个事件.我将使用事件的参数 -> 属性作为该方法的参数调用自定义类中的特定方法.
Basically i have an Event in my custom class. I will call the particular method in the custom class with the event's argument -> properties as a parameter for that method.
您可以观察信息背后的实际代码.
You can observe the actual code behind information for this.
instance.FileOpening += (sender, e) =>
{
CustomClass.Method(e.XXproperty, e.YYproperty);
};
但我想通过 MVVM 中的交互来实现这一点.所以我在 xaml 中使用了以下代码.
But i want to achieve this through interaction.Triggers in MVVM. So i used the following code in xaml.
<i:Interaction.Triggers>
<i:EventTrigger EventName="FileOpening">
<i:FileOpeningAction TargetObject="{Binding ElementName=cntrol}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
我对应的 TargetedTriggerAction 类在这里是为了让我的自定义类来执行该方法.
My corresponding TargetedTriggerAction class is here to get my customclass to execute the method.
public class FileOpeningAction :TargetedTriggerAction<CustomClass>
{
protected override void Invoke(object parameter)
{
((instance).TargetObject).Method(?,?);
}
}
但我的问题是如何通过上述操作中的 e.XXproperty 和 e.YYproperty 来执行我的自定义类中的方法?
But my question is How can i pass the e.XXproperty and e.YYproperty in the above action to execute the method in my custom class ?
推荐答案
你也可以尝试使用交互库,然后你可以这样写:
You can try to use also interactivity library, then you can write this :
<i:EventTrigger EventName="FileOpening">
<ei:CallMethodAction TargetObject="{Binding}" MethodName="OnFileOpening"/>
</i:EventTrigger>
在你的代码中它会像
public void OnFileOpening(object sender, EventArgs e){//your code}
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