/// <summary>
/// Compare the DICOM files in the two directories based on there being corresponding
/// files in each directory with the same attribute value for the matching Tag.
/// </summary>
/// <param name="directory1">Full directory name of first directory.</param>
/// <param name="directory2">Full directory name of second directory.</param>
/// <param name="matchingTag">DICOM Tag value to match in a file in each directory.</param>
/// <returns>Total number of differences between compared files.</returns>
public int Compare(String directory1, String directory2, DvtkData.Dimse.Tag matchingTag)
{
int totalDifferences = 0;
StreamWriter htmlOutput = null;
try
{
// create the output file writer if necessary
if (_htmlOutputFilename != String.Empty)
{
htmlOutput = new StreamWriter(_htmlOutputFilename);
}
// compare all files in directory 1 with corresponding files in directory 2
// - the files compared is based on them having the same attribute value for the
// Tag given.
DirectoryInfo directoryInfo = new DirectoryInfo(directory1);
FileInfo[] fileInfo = directoryInfo.GetFiles();
for (int i = 0; i < fileInfo.Length; i++)
{
DataSet dataset1 = new DataSet();
String filename1 = fileInfo[i].FullName;
dataset1.DvtkDataDataSet = Dvtk.DvtkDataHelper.ReadDataSetFromFile(filename1);
// get the attribute value for the matching tag from this dataset
String valueToMatch = GetAttributeValueFromDataset(dataset1, matchingTag);
if (valueToMatch != String.Empty)
{
// try to find a dataset (file) containing the same value in directory 2
String filename2 = String.Empty;
DataSet dataset2 = GetMatchingDatasetFromStoreDataDirectory(directory2, matchingTag, valueToMatch, out filename2);
// if a dataset is returned that contains the matching attribute value go on to compare all the attributes
// in both datasets with eachother
if (dataset2 != null)
{
// get a new compare instance and set the comparison flags
StaticDicomCompare staticDicomCompare = new StaticDicomCompare();
FlagsDicomAttribute flags = FlagsDicomAttribute.Compare_values | FlagsDicomAttribute.Compare_present | FlagsDicomAttribute.Include_sequence_items;
if (_compareVr == false)
{
staticDicomCompare.DisplayAttributeVR = false;
}
else
{
flags |= FlagsDicomAttribute.Compare_VR;
}
staticDicomCompare.DisplayGroupLength = _displayGroupLength;
dataset1.UnVrDefinitionLookUpWhenReading = _unVrDefinitionLookUpWhenReading;
dataset2.UnVrDefinitionLookUpWhenReading = _unVrDefinitionLookUpWhenReading;
AttributeCollections datasets = new AttributeCollections();
datasets.Add(dataset1);
datasets.Add(dataset2);
StringCollection datasetDescriptions = new StringCollection();
datasetDescriptions.Add(filename1);
datasetDescriptions.Add(filename2);
String title = String.Format("Comparison Results with matching using Tag with {0}", matchingTag.ToString());
DvtkHighLevelInterface.Common.Compare.CompareResults datasetCompareResults = staticDicomCompare.CompareAttributeSets(title, datasets, datasetDescriptions, flags);
if (htmlOutput != null)
{
if (_includeDetailedResults == true)
{
htmlOutput.WriteLine(datasetCompareResults.Table.ConvertToHtml());
}
else
{
htmlOutput.WriteLine("<br />");
String message = String.Format("Compared {0} with {1} - number of differences: {2}", filename1, filename2, datasetCompareResults.DifferencesCount);
htmlOutput.WriteLine(message);
htmlOutput.WriteLine("<br />");
}
}
// update the total differences counter
totalDifferences += datasetCompareResults.DifferencesCount;
}
}
}
}
catch (System.Exception)
{
}
if (htmlOutput != null)
{
htmlOutput.Flush();
htmlOutput.Close();
}
return totalDifferences;
}