I\'m having a similar problem with FormatException being thrown. My code is simply:
void Orders_OnSubmit() { DateTime CurrentTime = DateTime.Now; rtbAd
There's no need to explicitly access the Date and TimeOfDay properties of the DateTime instance. You can simplify your code like so:
rtbAdd(String.Format("Submitted on {0:MM/dd/yyyy} at {0:HH:mm:ss.ffffff}", DateTime.Now));