/// <summary>
/// Get VR for given string value.
/// </summary>
/// <param name="vr">String representation of VR</param>
/// <returns>VR</returns>
public static DicomVR Parse(string vr)
{
DicomVR result = TryParse(vr, out bool valid);
if (!valid)
{
throw new DicomDataException($"Unknown VR: '{vr}'");
}
return(result);
}
private void ReadDictionaryXML()
{
DicomDictionary dict = _dict;
var xdoc = XDocument.Load(_stream);
IEnumerable <XElement> xdicts;
if (xdoc.Root.Name == "dictionaries")
{
xdicts = xdoc.Root.Elements("dictionary");
}
else
{
XElement xdict = xdoc.Element("dictionary");
if (xdict == null)
{
throw new DicomDataException("Expected <dictionary> root node in DICOM dictionary.");
}
var dicts = new List <XElement>();
dicts.Add(xdict);
xdicts = dicts;
}
foreach (var xdict in xdicts)
{
XAttribute creator = xdict.Attribute("creator");
if (creator != null && !string.IsNullOrEmpty(creator.Value))
{
dict = _dict[_dict.GetPrivateCreator(creator.Value)];
}
else
{
dict = _dict;
}
foreach (XElement xentry in xdict.Elements("tag"))
{
string name = xentry.Value ?? "Unknown";
string keyword = string.Empty;
if (xentry.Attribute("keyword") != null)
{
keyword = xentry.Attribute("keyword").Value;
}
var vrs = new List <DicomVR>();
XAttribute xvr = xentry.Attribute("vr");
if (xvr != null && !string.IsNullOrEmpty(xvr.Value))
{
string[] vra = xvr.Value.Split('_', '/', '\\', ',', '|');
foreach (string vr in vra)
{
vrs.Add(DicomVR.Parse(vr));
}
}
else
{
vrs.Add(DicomVR.NONE);
}
var vm = DicomVM.Parse(xentry.Attribute("vm").Value);
bool retired = false;
XAttribute xretired = xentry.Attribute("retired");
if (xretired != null && !string.IsNullOrEmpty(xretired.Value) && bool.Parse(xretired.Value))
{
retired = true;
}
string group = xentry.Attribute("group").Value;
string element = xentry.Attribute("element").Value;
if (group.ToLower().Contains("x") || element.ToLower().Contains("x"))
{
var tag = DicomMaskedTag.Parse(group, element);
tag.Tag.PrivateCreator = dict.PrivateCreator;
dict.Add(new DicomDictionaryEntry(tag, name, keyword, vm, retired, vrs.ToArray()));
}
else
{
var tag = DicomTag.Parse(group + "," + element);
tag.PrivateCreator = dict.PrivateCreator;
dict.Add(new DicomDictionaryEntry(tag, name, keyword, vm, retired, vrs.ToArray()));
}
}
}
}
/// <summary>
/// Try to get VR for given string value.
/// </summary>
/// <param name="vr">String representation of VR</param>
/// <param name="result">VR code</param>
/// <returns>true if VR was successfully parsed, false otherwise</returns>
public static bool TryParse(string vr, out DicomVR result)
{
result = TryParse(vr, out bool valid);
return(valid);
}