LoadJson(DicomDataSet,String,DicomDataSetLoadJsonFlags,LoadJsonBeforeElementCallback,LoadJsonAfterElementCallback) Method

C#
Visual Basic
Objective-C
Java
C++

[ExtensionAttribute()]
public static void LoadJson( 
   DicomDataSet ds,
   string fileName,
   DicomDataSetLoadJsonFlags jsonFlags,
   LoadJsonBeforeElementCallback cbBefore,
   LoadJsonAfterElementCallback cbAfter
)

'Declaration

<ExtensionAttribute()>
Public Overloads Shared Sub LoadJson( _
   ByVal ds As DicomDataSet, _
   ByVal fileName As String, _
   ByVal jsonFlags As DicomDataSetLoadJsonFlags, _
   ByVal cbBefore As LoadJsonBeforeElementCallback, _
   ByVal cbAfter As LoadJsonAfterElementCallback _
)

'Usage

Dim ds As DicomDataSet
Dim fileName As String
Dim jsonFlags As DicomDataSetLoadJsonFlags
Dim cbBefore As LoadJsonBeforeElementCallback
Dim cbAfter As LoadJsonAfterElementCallback
 
DicomExtensions.LoadJson(ds, fileName, jsonFlags, cbBefore, cbAfter)

[ExtensionAttribute()]
public:
static void LoadJson( 
   DicomDataSet^ ds,
   String^ fileName,
   DicomDataSetLoadJsonFlags jsonFlags,
   LoadJsonBeforeElementCallback^ cbBefore,
   LoadJsonAfterElementCallback^ cbAfter
)

Parameters

ds: The Data Set that will be created and populated with the contents of the DICOM JSON input file
fileName: The name of the input JSON file
jsonFlags: Flags that affect whether to ignore binary or all data from the DICOM JSON input file
cbBefore: Optional callback that allows you to modify how the input JSON file elements, and values are used.
cbAfter: Optional callback that allows you to change the DicomElement after it has been added to the DicomDataSet.

Use this method to read the contents of a DICOM JSON file. The DICOM JSON file can be created using SaveJson By default, all binary data is read from the DICOM input JSON file, but this behavior can be modified by passing appropriate DicomDataSetLoadJsonFlags

The way that this method processes the input JSON file elements, and element values can be customized by passing the optional LoadJsonBeforeElementCallback delegate. For more information on this, see the documentation and example for LoadJsonBeforeElementCallback. The DicomElement themselves can be modified after they have been added to the DicomDataSet by passing the optional LoadJsonAfterElementCallback delegate. For more information on this, see the documentation and example for LoadJsonAfterElementCallback.

This example will load a sample DICOM data set, then save it as an JSON file (with no binary data), and then reload the JSON file into a DicomDataSet object

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools.Dicom
Imports Leadtools.Dicom.Common
Imports Leadtools.Dicom.Common.Extensions
Imports Leadtools.Dicom.Common.Linq
Imports Leadtools.Dicom.Common.Linq.BasicDirectory
Imports Leadtools
Imports Leadtools.Dicom.Common.DataTypes

<TestMethod()> _
Public Sub LoadJsonExample()
   Dim dicomFileNameIn As String = Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm")
   Dim jsonFileNameOut As String = Path.Combine(LEAD_VARS.ImagesDir, "test.json")
   ' Initialize DICOM engine
   DicomEngine.Startup()

   Dim ds As New DicomDataSet()

   ' Load an existing DICOM file
   ds.Load(dicomFileNameIn, DicomDataSetLoadFlags.None)

   ' Save as JSON with no binary data
   ' For the demo, keep the json output file size small by skipping the pixel data
   Const jsonFlags As DicomDataSetSaveJsonFlags = DicomDataSetSaveJsonFlags.IgnoreBinaryData Or DicomDataSetSaveJsonFlags.TrimWhiteSpace
   ds.SaveJson(jsonFileNameOut, jsonFlags)

   ' Now reload the json file.  
   ' Note that there will not be an image because we skipped the pixel data in the save
   ds.LoadJson(jsonFileNameOut, DicomDataSetLoadJsonFlags.None)

   DicomEngine.Shutdown()
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

using Leadtools.Dicom;
using Leadtools.Dicom.Common;
using Leadtools.Dicom.Common.Extensions;
using Leadtools;
using Leadtools.Dicom.Common.Linq.BasicDirectory;
using Leadtools.Dicom.Common.DataTypes;

[TestMethod]
public void LoadJsonExample()
{
   string dicomFileNameIn = Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm");
   string jsonFileNameOut = Path.Combine(LEAD_VARS.ImagesDir, "test.json");
   // Initialize DICOM engine
   DicomEngine.Startup();

   DicomDataSet ds = new DicomDataSet();

   // Load an existing DICOM file
   ds.Load(dicomFileNameIn, DicomDataSetLoadFlags.None);

   // Save as JSON with no binary data
   // For the demo, keep the json output file size small by skipping the pixel data
   const DicomDataSetSaveJsonFlags jsonFlags = DicomDataSetSaveJsonFlags.IgnoreBinaryData |
                                               DicomDataSetSaveJsonFlags.TrimWhiteSpace;
   ds.SaveJson(jsonFileNameOut, jsonFlags);

   // Now reload the json file.  
   // Note that there will not be an image because we skipped the pixel data in the save
   ds.LoadJson(jsonFileNameOut, DicomDataSetLoadJsonFlags.None);

   DicomEngine.Shutdown();
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms

Reference