Question

有没有办法可以使用下面的代码返回Guid？例如，我传递给AddSchedule的是一个类。我想从类中返回一个Id，所以我可以在控制器中使用它。我如何更改代码以解决此问题？

控制器

ModelService.AddSchedule(
                new Schedule
                {
                 Id = Guid.Empty,
                 Start = start,
                 Stop = end
                });

我想用返回Guid做什么

 ModelService.AddScheduleToPerson(
                new Schedule
                {
                 Id = ?,   // get this from above
                 UserId = userid,
                 User = username
                });

模型

public ObjectCreateStatus AddSchedule(Schedule schedule)
    {
        var client = new Services.ConfigurationClient();
        try
        {
            ConfigurationMessage cMsg =
                client.ConfigService.AddSchedule(
                    this.ControllerBase.SessionVariables.Credentials,
                    schedule
                    );
            if (cMsg.Result == ConfigurationResultEnum.Success)
                return ObjectCreateStatus.Success;                
            return ObjectCreateStatus.GeneralError;
        }
        finally
        {
            client.Close();
        }
    }

Answer 1

如果您要返回GUID以及ObjectCreateStatus，可以考虑使用out参数。

 public ObjectCreateStatus AddSchedule(Schedule schedule, out Guid guid) { }

Answer 2

我创建了一个包装器对象，可以同时包含ObjectCreateStatus和Guid并返回该对象。像这样：

public class ObjectCreateResult
{
    public ObjectCreateStatus CreateStatus { get; set; }
    public Guid CreateGuid { get; set; }
}


public ObjectCreateResult AddSchedule(Schedule schedule)
{
    ObjectCreateResult result = new ObjectCreateResult();

    var client = new Services.ConfigurationClient();
    try
    {
        ConfigurationMessage cMsg =
            client.ConfigService.AddSchedule(
                this.ControllerBase.SessionVariables.Credentials,
                schedule
                );
        if (cMsg.Result == ConfigurationResultEnum.Success)
        {
            result.CreateStatus = ObjectCreateStatus.Success;
            result.CreateGuid = Guid.NewGuid(); // Set your actual Guid here
        }
        else
        {
            result.CreateStatus = ObjectCreateStatus.GeneralError;
            result.CreateGuid = Guid.Empty;
        }

    }
    finally
    {
        client.Close();
    }

    return result;
}

Answer 3

您可以使用out参数。我在方法的开头分配GUID，但您可能希望根据您的要求更改该逻辑。这是您修改后的代码：

public ObjectCreateStatus AddSchedule(Schedule schedule, out Guid theGuid)
    {
        theGuid = Guid.NewGuid();
        var client = new Services.ConfigurationClient();
        try
        {
            ConfigurationMessage cMsg =
                client.ConfigService.AddSchedule(
                    this.ControllerBase.SessionVariables.Credentials,
                    schedule
                    );
            if (cMsg.Result == ConfigurationResultEnum.Success)
                return ObjectCreateStatus.Success;                
            return ObjectCreateStatus.GeneralError;
        }
        finally
        {
            client.Close();
        }
    }

Answer 4

考虑将ObjectCreateStatus作为一个类：

public class ObjectCreateStatus {
  public bool WasSuccessful { get; private set; }
  public Guid ScheduleId { get; private set; }

  ctor(ConfigurationResultEnum result, Guid guid) {
    WasSuccessful = result == ConfigurationResultEnum.Success;
    ScheduleId = guid
  }
}

public ObjectCreateStatus AddSchedule(Schedule schedule)
{
    var client = new Services.ConfigurationClient();
    try
    {
        ConfigurationMessage cMsg =
            client.ConfigService.AddSchedule(
                this.ControllerBase.SessionVariables.Credentials,
                schedule
                );
        return new ObjectCreateStatus(cMsg.Result, cMsg.Guid(?))
    }
    finally
    {
        client.Close();
    }
}

如何从控制器中的类返回guid

4 个答案: