c# - 与 fo-dicom 的存储 promise

Question

我正在尝试使用 FO-DICOM 框架实现存储 promise ，但没有结果。我能够创建 N-ACTION 请求。我能够收到 N-ACTION 响应。但是我不知道如何接收EVENTREPORT。任何人都可以帮助我并以正确的方式称呼我？

private DicomStatus _responseStatus;

public void SendRequestForCommitment(string scImageUid)
{
    var client = new DicomClient();

    var nAction = new DicomNActionRequest(DicomUID.StorageCommitmentPushModelSOPClass,
        new UIDGenerator().PrivatelyDefinedSoapInstanceUid(), 1);

    var ds = new DicomDataset();
    nAction.Dataset = ds;
    nAction.Dataset.Add(DicomTag.TransactionUID, new UIDGenerator().uid);

    var sps = new DicomDataset();
    nAction.Dataset.Add(new DicomSequence(DicomTag.ReferencedSOPSequence, sps));

    sps.Add(DicomTag.ReferencedSOPClassUID, DicomUID.SecondaryCaptureImageStorage);
    sps.Add(DicomTag.ReferencedSOPInstanceUID, scImageUid);

    DicomNActionRequest.ResponseDelegate nActionResponseDelegate = NActionResponse;
    nAction.OnResponseReceived = nActionResponseDelegate;

    client.AddRequest(nAction);
    client.Send("127.0.0.1", 105, false, "myAE", "DVTK_STRC_SCP");


}

private void NActionResponse(DicomNActionRequest request, DicomNActionResponse response)
{
    _responseStatus = response.Status;
}

Answer 1

Disclaimer: I never used FO-DICOM. The code below is just a pseudo code and is NOT FO-DICOM syntax. I hope looking at pseudo code, you will able to figure out exact members (properties, methods, and events) in toolkit.

在您的代码中，您已经在构建请求数据集。然后，您调用 client.AddRequest(nAction);，然后调用 client.Send(......);。我假设这将在内部建立连接、关联并发送 NAction 请求。

那么你已经订阅了 private void NActionResponse(....) 事件。我假设此事件已被触发并且您正在收到 NAction 响应。

同样，您应该订阅 NEventReport 事件(在工具包中查找确切的语法)，如下所示:

private void NEventReportReceived(DicomNEventReport request, ......)
{
    //Parse the request here.
    //Check what files were archived and what were failed.
    //Do your stuff accordingly.
    //Send NEventReport response conveying the status.

    client.SendReleaseRequest();
}

订阅另一个事件来处理释放响应。

private void ReleaseResponseReceived(......)
{
    //Close connection
}

正如我在 other 中所说的那样回答，你的SCU应该有处理NEventReport的能力。您已通过编写 client.AddRequest(nAction); 行将 NAction 添加到您的客户端。检查工具包文档，看看您是否还需要为 NEventReport 添加类似的。我强烈认为不需要这样做；你只需要订阅一个事件。