第一种写法，写在Interaction.Triggers
<UserControl>
<b:Interaction.Triggers>
<b:EventTrigger EventName="Loaded">
<b:CallMethodAction TargetObject="{Binding}"
MethodName="Load" />
</b:EventTrigger>
</b:Interaction.Triggers>
</UserControl>
第二种写法，直接写在UserControl的Loaded事件中
<UserControl x:Class="ChuckReviewView"
xmlns:viewmodels="Chuck.ViewModels"
d:DataContext="{d:DesignInstance Type=viewmodels:ChuckReviewViewModel}"
mc:Ignorable="d"
Loaded="{DXEvent Handler='Load()', CatchExceptions=False}">
</UserControl>
IsBusy的加载圈
<dx:LoadingDecorator IsSplashScreenShown="{Binding IsBusy}">
标签：Load,Interaction,Triggers,IsBusy,wpf,写法 From： https://www.cnblogs.com/chucklu/p/16647398.html