MouseEnterTest

MainWindow.xaml

<Window x:Class="WpfApplication16.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WpfApplication16"
        xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
        mc:Ignorable="d"
        Title="MainWindow" Height="350" Width="525">

    <StackPanel MouseEnter="UIElement_OnMouseEnter">

        <ListBox>
            
        </ListBox>
        
        <i:Interaction.Triggers>
            <i:EventTrigger EventName="MouseEnter">
                <i:InvokeCommandAction Command="{Binding CmdMouseEnter}" />
            </i:EventTrigger>
        </i:Interaction.Triggers>

    </StackPanel>
    
</Window>

MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Core.Utils.Classes;

namespace WpfApplication16
{
    public partial class MainWindow : Window
    {
        private ICommand _mouseEnter;

        public ICommand CmdMouseEnter
        {
            get
            {
                if (_mouseEnter == null)
                    _mouseEnter = new RelayCommand(TestMouseEnter);

                return _mouseEnter;
            }
        }

        private void TestMouseEnter(object o)
        {
            Console.WriteLine("data context mouse enter");
        }

        public MainWindow()
        {
            InitializeComponent();

            

            DataContext = this;
        }

        private void UIElement_OnMouseEnter(object sender, MouseEventArgs e)
        {
            Console.WriteLine("code behind mouse enter");
        }
    }
}