QueryClient Class

Summary
An abstract layer for implementing DICOM Query operations.
Syntax
C#
C++/CLI
public abstract class QueryClient : BaseClient 
public: 
   ref class QueryClient abstract : BaseClient 
Remarks

Inheritors can use this class to provide an abstraction layer for their applications without the need to worry how the query is performed.

Derived classes might perform DICOM Communication queries or direct database queries.

Example
C#
using LeadtoolsExamples.Common; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Dicom; 
using Leadtools.Dicom.Scu.Common; 
using Leadtools.ImageProcessing; 
using Leadtools.Dicom.AddIn.Common; 
using Leadtools.Dicom.Scu; 
using Leadtools.Medical.Workstation.Client; 
using Leadtools.Medical.Workstation.Client.Local; 
using Leadtools.Medical.Workstation.Client.Pacs; 
using Leadtools.Medical.Storage.DataAccessLayer; 
using Leadtools.Medical.DataAccessLayer; 
using Leadtools.Medical.Storage.DataAccessLayer.Configuration; 
 
public void DatabaseQueryLocal() 
{ 
   Leadtools.Examples.Support.SetLicense(); 
 
   AeInfo clientInfo = new AeInfo(); 
 
 
   clientInfo.Address = Dns.GetHostName(); //local machine 
   clientInfo.AETitle = "TEST_CLIENT"; 
   clientInfo.Port = 1000; 
 
   IStorageDataAccessAgent dataAccess = null; 
   bool fromConfiguration = false; 
 
   if (fromConfiguration) 
   { 
      //Make sure that the Sotrage Data Access is configured before creating an instance. 
      dataAccess = DataAccessFactory.GetInstance(new StorageDataAccessConfigurationView()).CreateDataAccessAgent<IStorageDataAccessAgent>(); 
   } 
   else 
   { 
      string connectionString = @"Data Source=local;Initial Catalog=DicomStorage;Integrated Security=True;User ID=;Password=;Pooling=True"; 
      //or you can directly create the data access object which works with your database 
      dataAccess = new StorageSqlDbDataAccessAgent(connectionString); 
   } 
 
   DbQueryClient client = new DbQueryClient(clientInfo, dataAccess); 
 
   client.EnableLog = true; 
   client.LogFileName = Path.Combine(LEAD_VARS.ImagesDir, "DicomLog.txt"); 
 
   PerformClientQuery(client); 
} 
 
public void PerformClientQuery(QueryClient client) 
{ 
   FindQuery studiesQuery = new FindQuery(); 
 
   DicomEngine.Startup(); 
   DicomDataSet[] studies = client.FindStudies(studiesQuery); 
 
 
   if (studies.Length > 0) 
   { 
      DicomDataSet study = studies[0]; 
      FindQuery seriesQuery = new FindQuery(); 
 
 
      seriesQuery.StudyInstanceUID = study.GetValue<string>(DicomTag.StudyInstanceUID, string.Empty); 
 
      DicomDataSet[] series = client.FindSeries(seriesQuery); 
 
      foreach (DicomDataSet seriesDS in series) 
      { 
         FindQuery imagesQuery = new FindQuery(); 
 
 
         imagesQuery.SeriesInstanceUID = seriesDS.GetValue<string>(DicomTag.SeriesInstanceUID, string.Empty); 
 
         DicomDataSet[] images = client.FindImages(imagesQuery); 
 
 
         foreach (DicomDataSet instance in images) 
         { 
            Console.WriteLine("SOPInstanceUID: {0}", instance.GetValue<string>(DicomTag.SOPInstanceUID, string.Empty)); 
 
            Console.WriteLine("SeriesInstanceUID: {0}", instance.GetValue<string>(DicomTag.SeriesInstanceUID, string.Empty)); 
 
            Console.WriteLine("StudyInstanceUID: {0}", instance.GetValue<string>(DicomTag.StudyInstanceUID, string.Empty)); 
         } 
      } 
   } 
   DicomEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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Leadtools.Medical.Workstation.Client Assembly

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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.