添加项目文件。

SamplePreSystemApp/Window1.xaml.cs

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+using MaterialDesignThemes.Wpf;
+using Models.Models;
+using SamplePreSystem.UI.ViewModel;
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.ComponentModel;
+using System.Linq;
+using System.Runtime.CompilerServices;
+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.Animation;
+using System.Windows.Media.Imaging;
+using System.Windows.Shapes;
+using static MaterialDesignThemes.Wpf.Theme.ToolBar;
+
+namespace SamplePreSystemApp
+{
+   
+    /// <summary>
+    /// Window1.xaml 的交互逻辑
+    /// </summary>
+    public partial class Window1 : Window,INotifyPropertyChanged
+    {
+        ListCollectionView view;
+        public Window1()
+        {
+            InitializeComponent();
+            this.DataContext = this;    
+
+          
+        }       
+      
+        public event PropertyChangedEventHandler? PropertyChanged;
+
+        protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            // 读取项目设置中保存的用户名
+            string savedUserName = Properties.Settings.Default.UserName;
+
+            // 勾选：保存用户名到设置
+            Properties.Settings.Default.UserName = "aaaaaaa";
+
+            // 2. 必须调用 Save() 才能持久化保存（关键！）
+            Properties.Settings.Default.Save();
+
+          
+        }
+
+        private void btnRead_Click(object sender, RoutedEventArgs e)
+        {
+            // 读取项目设置中保存的用户名
+            string savedUserName = Properties.Settings.Default.UserName;
+
+            //// 如果不为空，自动回填到输入框，并勾选记住选项
+            //if (!string.IsNullOrEmpty(savedUserName))
+            //{
+            //    txtUserName.Text = savedUserName;
+            //    chkRemember.IsChecked = true;
+            //}
+        }
+    }
+
+
+   
+
+}