update

VideoConcat.csproj

@@ -10,6 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
     <PackageReference Include="log4net" Version="3.0.2" />
     <PackageReference Include="MaterialDesignXaml.DialogsHelper" Version="1.0.4" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.1" />

ViewModels/MainWindowViewModel.cs

@@ -1,21 +1,42 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using VideoConcat.Models;
+using CommunityToolkit.Mvvm.ComponentModel;
+using CommunityToolkit.Mvvm.Input;
+using System.Windows;
 
 namespace VideoConcat.ViewModels
 {
-    internal class MainWindowViewModel
+    public partial class MainWindowViewModel : ObservableObject
     {
+        private string? _username;
+        private string? _password;
 
-        public MainWindowModel MainWindowsModel { get; set; } = new MainWindowModel();
-
-        public void Login()
+        public string Username
         {
-            string? userName = MainWindowsModel.Username;
-            string? passWord = MainWindowsModel.Password;
+            get => _username ?? "";
+            set => SetProperty(ref _username, value);
+        }
+
+        public string Password
+        {
+            get => _password ?? "";
+            set => SetProperty(ref _password, value);
+        }
+
+        [RelayCommand]
+        private async Task LoginAsync()
+        {
+            await Task.Run(() =>
+            {
+                // 模拟登录逻辑
+                if (Username == "admin" && Password == "password")
+                {
+                    MessageBox.Show("登录成功！");
+                    // 这里可以导航到主页面或其他操作
+                }
+                else
+                {
+                    MessageBox.Show("用户名或密码错误！");
+                }
+            });
         }
     }
 }

Views/MainWindow.xaml

@@ -62,8 +62,7 @@
                                 CaretBrush="#FFD94448"
                                 SelectionBrush="#FFD94448"
                                 materialDesign:HintAssist.Hint="输入 密码"
-                                Password="{Binding MainWindowModel.Password}">
-                            </PasswordBox>
+                                x:Name="PasswordBox"/>
                         </StackPanel>
                         <StackPanel Margin="10"
                                     HorizontalAlignment="Center"

Views/MainWindow.xaml.cs

@@ -12,12 +12,12 @@ namespace VideoConcat.Views
         public MainWindow()
         {
             InitializeComponent();
-            this.DataContext = new MainWindowModel();
+            DataContext = new MainWindowModel();
         }
 
         private void BtnExit_Click(object sender, RoutedEventArgs e)
         {
-            this.Close();
+            Close();
         }
 
         private void BtnLogin_Click(object sender, RoutedEventArgs e)