如何在PopupWindowAction中承载的用户控件中运行方法

public partial class MyUserControl : UserControl
{
    public MyUserControl()
    {
        InitializeComponent();
    }

    public void RunMethod()
    {
        // 在这里编写需要运行的方法逻辑
    }
}

<Window x:Class="MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
        xmlns:local="clr-namespace:YourNamespace"
        xmlns:prism="http://prismlibrary.com/"
        prism:ViewModelLocator.AutoWireViewModel="True"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="ButtonClickEvent">
                <prism:PopupWindowAction>
                    <prism:PopupWindowAction.WindowContent>
                        <local:MyUserControl />
                    </prism:PopupWindowAction.WindowContent>
                </prism:PopupWindowAction>
            </i:EventTrigger>
        </i:Interaction.Triggers>
        <!-- 其他控件 -->
    </Grid>
</Window>

private void Button_Click(object sender, RoutedEventArgs e)
{
    MyUserControl myUserControl = new MyUserControl();
    myUserControl.RunMethod();
}