As the properties Value of the date/time picker does not allow to enter the DateTime.Now default value, I have tried to set it in the code:
Private Sub DataFrom_ValueChanged(sender As System.Object, e As System.EventArgs) Handles DataForm.ValueChanged
DataFrom.Value = DateTime.Now
End Sub
It indeed shows the current date on opening the form with the date/time picker. However one cannot set any other date from the drop down calendar (one can choose a date, what means that the calendar is dropped down allowing to point a date, but after clicking the choice the date/time picker value returns to the current date).
Thank you in advance for some indications. Marek