DICOM_file_open.cpp

char *file = "C:/Folder1/Folder2/dicomfile";

//Open the DICOM file
DcmFileFormat fileformat;
OFCondition status = fileformat.loadFile(file);
DcmDataset *dictionary;

//If the loading worked
if( status.good() )				
  dictionary = fileformat.getDataset();
else
  std::cout << "Data dictionary can't be found, file corrupted." << std::endl;
	
OFString tagValue;
//Retrieve tag value from tag (here the patient name)
//If the tag exists
if( dictionary->findAndGetOFString(DcmTagKey(0x0010, 0x0010), tagValueOF) )
  std::cout << "The tag exists" << std::endl;

//Browse all the attributes in the DICOM file metadata
for(unsigned long i = 0; i<dictionary->card(); i++) 
{
  //Get the element
  DcmElement *element = dictionary->getElement(i);
  //Get the element tag
  DcmTag tag = element->getTag();
  //Get the element tag key
  DcmTagKey tagKey = DcmTagKey(element->getGTag(), element->getETag());
  //Get the element tag name
  const char *tagName = tag.getTagName();
  //Get the tag value for this element
  OFString val;
  element->getOFString(val, 0);
}

//Delete a tag
dictionary->remove(DcmTagKey(0x0010, 0x0010));

//Replace the value of a tag
OFString previousValue;
const char *newValue = "aValue";
//If the tag exists
if( dictionary->findAndGetOFString(tag, previousValue).good() )
  //Replace the value
  dictionary->putAndInsertString(tag, newValue);