MergeBulkData Method

In This Topic

Load Bulk data for all attributes, getting data from a method, based on the URI

Syntax

Visual Basic
C#

'Declaration
 
Public Sub MergeBulkData( _
   ByVal GetData As System.Func(Of Uri,String,HttpContent), _
   ByVal RequireBulkData As System.Boolean _
)

public void MergeBulkData( 
   System.Func<Uri,string,HttpContent> GetData,
   System.bool RequireBulkData
)

Parameters

GetData: A method which, when passed a URI, returns the associated byte array
RequireBulkData: If true, then an exception is thrown if any items cannot be found

Remarks

This method is used to re-assemble data from STOW-RS etc., where some bulk data items have been sent as parts of a multipart message, and the GetData delegate points to a routine which finds the appropriate part of the message.

Example

var studyUID = "1.3.46.670589.10.900123.19970114.35056132060.1";
var seriesUID = "1.3.46.670589.10.900123.19970114.35056132360.3";
var instanceUID = "1.3.46.670589.10.900123.19970114.3505612064";
                    
var dwc = new WadoWebClient($"http://localhost:10001/wado");
dwc.TransferSyntaxes.Clear();
dwc.TransferSyntaxes.Add(TransferSyntaxes.ExplicitVRLittleEndian);
var results = dwc.RetrieveMetaData(studyUID, seriesUID, instanceUID);
                    
DicomDataSet metadata = results.FirstOrDefault();
bool RequireBulkData = true;
                    
if (metadata != null)
{
    metadata.MergeBulkData((uri, contentType) =>
    {
        using (var client = new HttpClient())
        {
            string transferSyntax = TransferSyntaxes.ExplicitVRLittleEndian;
            var request = new HttpRequestMessage(HttpMethod.Get, uri);
            request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/octet-stream")
            {
                Parameters = { new NameValueHeaderValue("transfer-syntax", transferSyntax) }
            });
            
            var response = client.SendAsync(request).Result;
            response.EnsureSuccessStatusCode();
            
            return new ByteArrayContent(response.Content.ReadAsByteArrayAsync().Result)
            {
                Headers = { ContentType = new MediaTypeHeaderValue(contentType) }
            };
        }
    }, RequireBulkData);
}
var pixelData = results.FirstOrDefault()[Keyword.PixelData].Value; // pixel data retrieved

Requirements

Target Platforms: .NET CLR 4.8 or higher

Reference

DicomDataSet Class
DicomDataSet Members

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