// Find formats: dd/mm/yy or dd/mm/yyy, seperators: -/. (i.e. 31.01.08 31-01-08 etc.)
Regex rx = new Regex(@"([1-9]|0[1-9]|[12][0-9]|3[01])[- /.]([1-9]|0[1-9]|1[012])[- /.]((19|20)\d\d|\d\d)");

// Define a test string.
string text = fileName;

// Find matches.
MatchCollection matches = rx.Matches(text);

// Report the number of matches found.
if (matches.Count > 1)
DoST();

// Report on each match.
foreach (Match match in matches)
{
textBoxDocumentDate.Text = match.Value;
}

As we all know, the DSOFile.dll works well on all types of files. I wrote an app that works well on XP based systems (getting and writing file properties, summary and custom). However, this is not working on Windows 7. Looking at file properties on Windows 7 shows Tags property (instead of keyword? not sure). Any ideas?