How can I make the control can not be click while overlying? - wpf

Question

I make an easy demo by WPF, here is the XAML:
<Window x:Class="WpfApp1.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:WpfApp1"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid PreviewMouseLeftButtonDown="Grid_PreviewMouseLeftButtonDown" Background="White">
<Border Height="100" Width="100" Background="Red" PreviewMouseLeftButtonDown="Border_PreviewMouseLeftButtonDown"></Border>
</Grid>
</Window>
And here is the code-behind:
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;
namespace WpfApp1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Border_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
MessageBox.Show("Border");
}
private void Grid_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
MessageBox.Show("Grid");
}
}
}
I wanna do that if I press the border, it only activates the "Border" message box but not with the "Grid" message box also.
How can I do it? Would you please help me?
Thank you.

Answer 1

you can replace PreviewMouseLeftButtonDown with MouseDown.