VideoWaterMark:
1.【app.publish文件夹】
2.【*.pdb 文件】
3.【*.xml 文件】
4.【VideoWatermark.application 文件】
5.【VideoWatermark.exe.manifest 文件】

1.Nuget引入HandyControl https://handyorg.github.io/handycontrol/quick_start/
2.Nuget引入Enums.NET 并且 System.Runtime.CompilerServices.Unsafe 使用6.0版本
3.添加引用 System.Text.Json、System.Memory、System.Management
4.using System.Text.Json; using System.Management;

1.FFmpeg_视频处理
2.PdfiumViewer_C# PDF转图片（JPG，Png）_https://blog.csdn.net/tnb_ml/article/details/124915260

1. 创建Model（模型）
   首先定义一个LoginModel模型来表示登录信息。

   namespace Login.Model
   {
    public class LoginModel
    {
        public string Username { get; set; }
        public string Password { get; set; }
    }
   }

2. 创建ViewModel（视图模型）
   ViewModel作为View和Model之间的桥梁，包含用户输入的数据和命令绑定。

   using System;
   using System.ComponentModel;
   using System.Windows.Input;
   using Login.Command;
   using Login.Model;
   
   namespace Login.ViewModel
   {
    public class LoginViewModel : INotifyPropertyChanged
    {
   
        private LoginModel loginModel;
   
        public String Username
        {
            get { return loginModel.Username; }
            set
            { 
                this.loginModel.Username = value;
                OnPropertyChanged(nameof(Username));
            }
        }
   
        public String Password
        { 
            get { return loginModel.Password; }
            set
            { 
                this.loginModel.Password = value;
                OnPropertyChanged("Password");
            }
        }
   
        public ICommand LoginCommand { get; private set; }
   
        public LoginViewModel()
        {
            loginModel = new LoginModel();
            LoginCommand = new RelayCommand(Login, CanLogin);
        }
   
        private void Login(object parameter)
        {
            // 在这里添加登入逻辑
            if (CanLogin(null))
            {
                Console.WriteLine($"登录成功：用户名={Username}, 密码={Password}");
            }
        }
   
        private bool CanLogin(object parameter)
        {
            // 在这里添加验证逻辑
            return !string.IsNullOrEmpty(Username) && !string.IsNullOrEmpty(Password);
        }
   
        public event PropertyChangedEventHandler PropertyChanged;
        protected virtual void OnPropertyChanged(string propertyName)
        {
            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }
    }
   }

3. 创建View（视图）
   接下来创建XAML界面用于用户输入和触发登录命令。

   <Window x:Class="Login.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:Login"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <StackPanel Margin="20">
            <Label Content="Username:"/>
            <TextBox Text="{Binding Username, UpdateSourceTrigger=PropertyChanged}" Margin="0,5"/>
            <Label Content="Password:"/>
            <TextBox Text="{Binding Password, UpdateSourceTrigger=PropertyChanged}" Margin="0,5"/>
            <Button Content="Login" Command="{Binding LoginCommand}" Width="100" Height="30" Margin="0,15"/>
        </StackPanel>
    </Grid>
   </Window>

   4.创建RelayCommand
   RelayCommand是一个实现了ICommand接口的类，用于绑定View中的命令到ViewModel的命令处理方法

   using System;
   using System.Windows.Input;
   
   namespace Login.Command
   {
    public class RelayCommand : ICommand
    {
        private readonly Action<object> _execute;
        private readonly Func<object, bool> _canExecute;
   
        public RelayCommand(Action<object> execute, Func<object, bool> canExecute = null)
        {
            _execute = execute ?? throw new ArgumentNullException(nameof(execute));
            _canExecute = canExecute;
        }
   
        public event EventHandler CanExecuteChanged
        {
            add { CommandManager.RequerySuggested += value; }
            remove { CommandManager.RequerySuggested -= value; }
        }
   
        public bool CanExecute(object parameter)
        {
            return _canExecute == null || _canExecute(parameter);
        }
   
        public void Execute(object parameter)
        {
            _execute(parameter);
        }
    }
   }

   5.绑定DataContext
   建立视图（UI）与视图模型（ViewModel）之间的数据绑定关系

   using System.Windows.Data;
   using Login.ViewModel;
   
   namespace Login
   {
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            DataContext = new LoginViewModel();
        }
    }
   }