added some practice examples

20241107/WpfApp2/View/UserControls/MenuBar.xaml

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+<UserControl x:Class="WpfApp2.View.UserControls.MenuBar"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:WpfApp2.View.UserControls"
+             mc:Ignorable="d" 
+             Height="70" d:DesignWidth="800">
+    <Grid>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="30"></RowDefinition>
+            <RowDefinition Height="40"></RowDefinition>
+        </Grid.RowDefinitions>
+        <Menu Grid.Row="0">
+            <MenuItem Header="File" FontSize="16">
+                <MenuItem Header="Exit" Name="exit"></MenuItem>
+            </MenuItem>
+            <MenuItem Header="Edit" FontSize="16"></MenuItem>
+        </Menu>
+
+        <Button Width="50" Height="25" VerticalAlignment="Center" Grid.Row="1"></Button>
+        <TextBox Width="250" Grid.Row="1" Height="30" HorizontalAlignment="Left"></TextBox>
+        
+    </Grid>
+</UserControl>

20241107/WpfApp2/View/UserControls/MenuBar.xaml.cs

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+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 WpfApp2.View.UserControls
+{
+    /// <summary>
+    /// Interaction logic for MenuBar.xaml
+    /// </summary>
+    public partial class MenuBar : UserControl
+    {
+        public MenuBar()
+        {
+            InitializeComponent();
+        }
+    }
+}