private void ParseDataSet(long StreamPositionEnd, XElement theParentNode)
{
// Each Sequence does have it's own 'Private Code Dictionary'
PrivateCodeDictionary aPrivateCodeDictionary = new PrivateCodeDictionary();
while (mBinaryReader.BaseStream.Position < StreamPositionEnd)
{
DICOMDataElement aTag = GetNextTag(aPrivateCodeDictionary);
if (aTag != null)
{
// Check for 'Transfer Syntax UID (0002,0010)'
// ===========================================
if (aTag.Tag.Equals("(0002,0010)"))
{
mTransferSyntax = aTag.ValueField;
}
// Private Creator Code Handling
// =============================
// Reset Private Creator Code List if current Tag is 'Item'
if (aTag.Tag.Equals("(FFFE,E000)"))
{
aPrivateCodeDictionary.ClearPrivateCreatorCode();
}
// Add new Private Creator Code
if ((aTag.GroupNumber % 2) == 1 && (aTag.ElementNumber <= 0xFF))
{
string aGroupNumberString = aTag.GroupNumber.ToString("X4");
string aElementNumberString = aTag.ElementNumber.ToString("X2");
aPrivateCodeDictionary.LoadPrivateCreatorCode(aGroupNumberString, aElementNumberString, aTag.ValueField.Trim());
}
// Add new Tag to XDocument
// ========================
XElement newXDataElement = new XElement("DataElement");
theParentNode.Add(newXDataElement);
newXDataElement.Add(new XAttribute("Tag", aTag.Tag));
newXDataElement.Add(new XAttribute("TagName", aTag.TagName));
newXDataElement.Add(new XAttribute("VR", aTag.VR));
newXDataElement.Add(new XAttribute("VM", aTag.VM));
newXDataElement.Add(new XAttribute("Data", aTag.ValueField));
newXDataElement.Add(new XAttribute("Length", aTag.ValueLength.ToString()));
newXDataElement.Add(new XAttribute("StreamPosition", aTag.StreamPosition.ToString()));
// Call 'ParseDataSet' recursively for nested datasets
// ===================================================
if (aTag.VR.Equals("SQ"))
{
if (aTag.ValueLength == -1)
{
ParseDataSet(mBinaryReader.BaseStream.Length, newXDataElement);
}
else
{
ParseDataSet(mBinaryReader.BaseStream.Position + aTag.ValueLength, newXDataElement);
}
}
// End criteria for sequence reached?
// ==================================
// Break if current Tag is 'Sequence Delimitation Item'
if (aTag.Tag.Equals("(FFFE,E0DD)"))
{
break;
}
}
}
}
