LoadXml(DicomDataSet,Stream,DicomDataSetLoadXmlFlags,LoadXmlBeforeElementCallback,LoadXmlAfterElementCallback) Method

Summary

Loads a stream containing a DICOM-encoded XML file.

Syntax
C#
VB
C++
<ExtensionAttribute()> 
Public Overloads Shared Sub LoadXml( _ 
   ByVal ds As DicomDataSet, _ 
   ByVal stream As Stream, _ 
   ByVal xmlFlags As DicomDataSetLoadXmlFlags, _ 
   ByVal cbBefore As LoadXmlBeforeElementCallback, _ 
   ByVal cbAfter As LoadXmlAfterElementCallback _ 
)  

Parameters

ds
The Data Set that will be created and populated with the contents of the DICOM XML input file.

stream
The name of the input XML file.

xmlFlags
Flags that affect whether to ignore binary or all data from the DICOM XML input file.

cbBefore
Optional callback that allows you to modify how the input XML file elements, attributes, and values are used.

cbAfter
Optional callback that allows you to change the DicomElement after it has been added to the DicomDataSet.

Remarks

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

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

Example

This example loads a sample DICOM data set, saves it as XML to a memory stream (with no binary data), displays the memory stream, reloads the XML stream into a DicomDataSet object, and saves the DicomDataSet object as a DICOM file

C#
VB
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; 
 
public void LoadXmlExample2() 
{ 
   string dicomFileNameIn = Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm"); 
   string dicomFileNameOut = Path.Combine(LEAD_VARS.ImagesDir, "test.dcm"); 
 
   // Initialize DICOM engine 
   DicomEngine.Startup(); 
 
   DicomDataSet ds = new DicomDataSet(); 
 
   // Load an existing DICOM file 
   ds.Load(dicomFileNameIn, DicomDataSetLoadFlags.None); 
 
   // Save as XML to a stream with no binary data 
   // For the demo, keep the XML output file size small by skipping the pixel data 
   DicomDataSetSaveXmlFlags xmlFlags = 
      DicomDataSetSaveXmlFlags.IgnoreBinaryData | 
      DicomDataSetSaveXmlFlags.TrimWhiteSpace | 
      DicomDataSetSaveXmlFlags.TagWithCommas; 
 
   Stream stream = new MemoryStream(); 
   ds.SaveXml(stream, xmlFlags); 
 
   // Display contents of stream 
   stream.Flush(); 
   stream.Position = 0; 
   StreamReader sr = new StreamReader(stream); 
   string xmlString = sr.ReadToEnd(); 
   MessageBox.Show(xmlString, "xml version of " + dicomFileNameIn); 
 
   // Now reload the XML file from the stream.   
   // Note that there will not be an image because we skipped the pixel data in the save 
   stream.Seek(0, SeekOrigin.Begin); 
   //stream.Position = 0; 
   ds.LoadXml(stream, DicomDataSetLoadXmlFlags.None); 
 
   ds.Save(dicomFileNameOut, DicomDataSetSaveFlags.None); 
 
   DicomEngine.Shutdown(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
} 
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 
 
Public Sub LoadXmlExample2() 
   Dim dicomFileNameIn As String = Path.Combine(LEAD_VARS.ImagesDir, "IMAGE3.dcm") 
   Dim xmlFileNameOut As String = Path.Combine(LEAD_VARS.ImagesDir, "test.xml") 
 
   ' Initialize DICOM engine 
   DicomEngine.Startup() 
 
   Dim ds As DicomDataSet = New DicomDataSet() 
 
   ' Load an existing DICOM file 
   ds.Load(dicomFileNameIn, DicomDataSetLoadFlags.None) 
 
   ' Save as XML with no binary data 
   ' For the demo, keep the XML output file size small by skipping the pixel data 
   Dim xmlFlags As DicomDataSetSaveXmlFlags = DicomDataSetSaveXmlFlags.IgnoreBinaryData Or DicomDataSetSaveXmlFlags.TrimWhiteSpace Or DicomDataSetSaveXmlFlags.TagWithCommas 
   ds.SaveXml(xmlFileNameOut, xmlFlags) 
 
   ' Now reload the XML file.   
   ' Note that there will not be an image because we skipped the pixel data in the save 
   ds.LoadXml(xmlFileNameOut, DicomDataSetLoadXmlFlags.None) 
 
   DicomEngine.Shutdown() 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class 

Requirements

Target Platforms

Help Version 20.0.2019.9.19
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Leadtools.Dicom.Common Assembly