如何做电子会计档案管理

// 电子会计档案实体类示例
public class ElectronicAccountingArchive
{
    public Guid Id { get; set; }
    public string ArchiveNumber { get; set; }
    public string ArchiveName { get; set; }
    public ArchiveType Type { get; set; }
    public DateTime CreateTime { get; set; }
    public string CreatedBy { get; set; }
    public byte[] FileContent { get; set; }
    public string FileFormat { get; set; }
    public bool IsValid { get; set; }
    public DateTime? ExpiryDate { get; set; }
}

// 档案类型枚举
public enum ArchiveType
{
    Voucher = 1,     // 会计凭证
    Ledger = 2,      // 会计账簿
    Report = 3,      // 财务报表
    Other = 4        // 其他会计资料
}

// 档案管理服务示例
public class ArchiveManagementService
{
    private readonly IArchiveRepository _archiveRepository;
    
    public ArchiveManagementService(IArchiveRepository archiveRepository)
    {
        _archiveRepository = archiveRepository;
    }
    
    // 创建电子档案
    public async Task CreateElectronicArchiveAsync(
        ElectronicArchiveDto archiveDto)
    {
        // 验证档案数据
        var validationResult = await ValidateArchiveDataAsync(archiveDto);
        if (!validationResult.IsValid)
        {
            return ArchiveCreationResult.Failure(validationResult.Errors);
        }
        
        // 创建档案实体
        var archive = new ElectronicAccountingArchive
        {
            Id = Guid.NewGuid(),
            ArchiveNumber = GenerateArchiveNumber(),
            ArchiveName = archiveDto.ArchiveName,
            Type = archiveDto.Type,
            CreateTime = DateTime.UtcNow,
            CreatedBy = archiveDto.CreatedBy,
            FileContent = archiveDto.FileContent,
            FileFormat = archiveDto.FileFormat,
            IsValid = true
        };
        
        // 保存档案
        await _archiveRepository.AddAsync(archive);
        await _archiveRepository.SaveChangesAsync();
        
        return ArchiveCreationResult.Success(archive.Id);
    }
    
    // 生成档案编号
    private string GenerateArchiveNumber()
    {
        return $"ARC{DateTime.Now:yyyyMMddHHmmssfff}";
    }
}