Question

我接管了软件的编码及其当前的编写方式，我不确定是否会调用UnitOfWorks中的Dispose（）方法。我注意到我的SQL服务在一段时间（几天）之后就会停止，说所有连接都在用完。

我想知道以下代码是否正确完成，如果没有，我如何进行纠正以便调用dispose（）方法。

UnitOfWorks.cs

public class UnitOfWorks 
{
    private KaprukaEntities context;
    private GenericRepository<Transaction> transactionRepository;
    private bool disposed;

    public GenericRepository<Transaction> TransactionRepository
    {
        get
        {
            if (this.transactionRepository == null)
                this.transactionRepository = new GenericRepository<Transaction>(this.context);
            return this.transactionRepository;
        }
    }

    public UnitOfWorks(KaprukaEntities entities)
    {
        this.context = entities;
    }

    public void Save()
    {
        this.context.SaveChanges();
    }

    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }

    protected virtual void Dispose(bool disposing)
    {
        if (!this.disposed && disposing)
            this.context.Dispose();
        this.disposed = true;
    }
    public interface IDisposable
    {
        void Dispose();
    }
}

UnitOfWorks正在被服务类调用。

TransactionService.cs

public class TransactionService
{
    private UnitOfWorks _unitOfWork;
    private KaprukaEntities entities;

    public TransactionService(UnitOfWorks unitOfWork)
    {
        this._unitOfWork = unitOfWork;
        this.entities = new KaprukaEntities();
    }

    public bool Add(Transaction entity)
    {
        this._unitOfWork.TransactionRepository.Add(entity);
        this._unitOfWork.Save();
        var er = this.entities.GetValidationErrors();
        return true;
    }

    public bool Update(Transaction entity)
    {
        this._unitOfWork.TransactionRepository.Update(entity);
        this._unitOfWork.Save();
        return true;
    }

    public bool Delete(Transaction entity)
    {
        this._unitOfWork.TransactionRepository.Delete(entity);
        this._unitOfWork.Save();
        return true;
    }

    public IEnumerable<Transaction> GetAll()
    {
        return this._unitOfWork.TransactionRepository.GetAll();
    }

    public IEnumerable<Transaction> GetAll(Expression<Func<Transaction, bool>> filter, Func<IQueryable<Transaction>, IOrderedQueryable<Transaction>> orderBy, string includeProperties)
    {
        return this._unitOfWork.TransactionRepository.Get(filter, orderBy, includeProperties);
    }
}

调用它的方式如下：

有一个名为updateTransaction.aspx的文件，在其代码后面，代码调用服务：

updateTransaction.aspx

TransactionService TransServ = new TransactionService(new UnitOfWorks(new KaprukaEntities()));
var TransDetails = TransServ.GetAll(x => x.TransactionID == intTID, null, "").SingleOrDefault();

我看不到任何关闭或处置任何代码的代码。

Answer 1

您的transactionservice构造函数创建了一个额外的db上下文，当一个已经在工作单元类中时：

  this.entities = new KaprukaEntities();

如何正确使用UnitOfWorks，Repository和Dispose

1 个答案: