Overloads Public Function BeginReadSequence( _
   ByVal element As DicomElement, _
   ByVal tree As Boolean, _
   ByVal tag As Long _
) As DicomDataSet

Visual Basic (Usage)	Copy Code
Dim instance As DicomDataSet Dim element As DicomElement Dim tree As Boolean Dim tag As Long Dim value As DicomDataSet   value = instance.BeginReadSequence(element, tree, tag)

public DicomDataSet BeginReadSequence( 
   DicomElement element,
   bool tree,
   long tag
)

public:
DicomDataSet^ BeginReadSequence( 
   DicomElement^ element,
   bool tree,
   int64 tag
) 

Parameters

element

an item in the data set

tree

true to evaluate the Data Set as a tree; false to evaluate the Data Set as a list.

tag

tag number of the DICOM element sequence

Return Value

For an example, refer to GetValue.

This method is used to begin reading values from an existing DICOM sequence. It is part of a group of four methods that are to be used together. The four methods are listed below:

• Leadtools.Dicom.DicomDataSet.BeginReadSequence
• Leadtools.Dicom.DicomDataSet.EndReadSequence
• Leadtools.Dicom.DicomDataSet.BeginReadItem
• Leadtools.Dicom.DicomDataSet.EndReadItem

These methods are part of a fluent interface that are used to easily work with DICOM sequences. The methods can be chained together to create easily human readable code to create a sequence.

Passing null for the parameter element, and true for the parameter tree will attempt to read a sequence from the root of the DICOM data set. To read a sequence that is not at the root, pass the sequence item element for the parameter element, and false for the parameter tree. For more information on the element and tree paramters, see FindFirstElement.

The format of the code for reading a sequence is as follows:

             ds.BeginReadSequence
               .BeginReadItem()
                  .GetValue
                  .GetValue
               .EndReadItem()
               .BeginReadItem()
                  .GetValue
                  .GetValue
               .EndReadItem()
             .EndReadSequence();

Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)

Reference