TimeSpan and EDF

I noticed two things while playing with EDF. TimeSpan.TotalSeconds is inaccurate on some computers. Probably the value is calculated by using the ticks-property. Unfortunately, this leads to a double which can have the wrong number. I made a t = TimeSpan.FromSeconds(3.2) and got t.TotalSeconds = 3.1999999999997. When using that in a calculation and casting the result to an Integer, you can get a wrong number - like me...

Speaking of wrong numbers brings me to my 2-day-EDF-problem. I desperately tried to create a sup-file made of dummy-EDF-files. The code is actually quite simple: new clsAufzeichnung, Meas_Sections.Add(dummy-EDF-file), SaveAufzeichnung, done. This works when you have set the HeaderLength of the EDF-file - unlike me...