Question

我在程序中使用通用存储库，但是当我将上下文描述为通用上下文时，它会导致错误：

错误1类型 'ArchiveBoundedContext.Infrastructure.Contexts.ArchiveBoundedContext' 不能在泛型类型中用作类型参数'TContext' 方法'SharedKernel.Infrastructure.Repository'。没有隐式参考转化 'ArchiveBoundedContext.Infrastructure.Contexts.ArchiveBoundedContext' 到'System.Data.Entity.DbContext'。 f：\上一版本的Projects \ Archiver-master \ SharedKernel.Infrastructure \ bin \ Debug \ SharedKernel.Infrastructure.dll ArchiveBoundedContext.Application

通用存储库：

    public abstract class Repository<TEntity, TContext>
    where TEntity : class
    where TContext : DbContext, new()
{
    private DbSet<TEntity> _set;

    public TContext ActiveContext { get; set; }

    protected Repository()
    {
        ActiveContext = new TContext();
    }

    public DbSet<TEntity> Set
    {
        get { return _set ?? (_set = ActiveContext.Set<TEntity>()); }
    }

    public TEntity Create()
    {
        return Set.Create();
    }

    public int Add(TEntity item)
    {
        Set.Add(item);
        return ActiveContext.SaveChanges();
    }

    public int Remove(TEntity item)
    {
        Set.Remove(item);
        return ActiveContext.SaveChanges();
    }

    public int Update()
    {
        return ActiveContext.SaveChanges();
    }
}

ArchiveRepository：

public class ArchiveRepository : Repository<PersonIdentificationImage, Contexts.ArchiveBoundedContext>, IArchiveRepository
{
    public ArchiveRepository() { }

    public void AddPersonIdentificationImage(PersonIdentificationImage personIdentificationImage)
    {
        var ctx = ActiveContext;
        ctx.PersonIdentificationImages.Add(personIdentificationImage);
    }
}

ArchiveService：

public class ArchiveService : IArchiveService
{
    private readonly ArchiveRepository _archiveRepository;

    public ArchiveService()
    {
        _archiveRepository = new ArchiveRepository();
    }
}

QTasArchiveBaseContext：

public class QTasArchiveBaseContext<TContext> : DbContext where TContext : DbContext 
{
    static QTasArchiveBaseContext()
    {
        Database.SetInitializer<TContext>(null);
    }

    protected QTasArchiveBaseContext()
        : base(DatabaseSettings.Default.QTasArchiveDatabaseConString)
    { }
}

ArchiveBoundedContext：

public class ArchiveBoundedContext : QTasArchiveBaseContext<ArchiveBoundedContext>
{
    public DbSet<PersonOtherImage> PersonScannedImages { get; set; }

    public DbSet<PersonIdentificationImage> PersonIdentificationImages { get; set; }
}

Answer 1

在Repository课程中，替换DbContext的{{1}}：

class

这有用吗？

通用存储库和通用DbContext中没有隐式引用转换错误

1 个答案: