Dank!
Der vollständige Code-Schnipsel für jedermann interessiert, ist:
// Launch MS Explorer with the correct log file selected.
//string pathToExplorer = System.IO.Path.Combine(Environment.ExpandEnvironmentVariables("%WinDir%"),
// "explorer.exe");
string pathToExplorer = "explorer.exe";
string pathToLogFile = Process.GetCurrentProcess().MainModule.FileName + ".log";
string arguments = String.Format( CultureInfo.InvariantCulture,
"/select, \"{0}\"",
pathToLogFile);
// C:\Windows\explorer.exe /select, "C:\projects\trunk\bin\MyCompany.App.StackTester.exe.log"
Process.Start( pathToExplorer,
arguments);