Batch file changes comparison

We need to compare multiple text files to see which segments have been changed in a batch process. The segments we are interested in are <Tu Origin="xtranslate"> </tu> strings. The native program is Trados Tageditor *.ttx files. These files can be edited in any UTF8 or Unicode text editor The files are not renamed in any way. Up to 2000 files will be compared in a single process. The app should be simple and show: - File component for selecting Source files directory - File component Changed files directory - A table detailing which XU segments have been changed or export CSV/Excel file. - The table should allow users to open the ttx file. Example of ttx segments <Tu Origin="xtranslate" MatchPercent="100"> <Tuv Lang="EN-US">Matching Rules</Tuv> <Tuv Lang="CS">Shodná pravidla</Tuv> </Tu> The text which should be compared is the target language which in this case is the text "Shodná pravidla" These segments should be compared and if they have been changed, then the comparison report should be in the results table. Ideal dev environment would be visual studio VB or C#. Deliverables: Compiled project Solution files.