title: c# saving settings while reading settings
body: <p>I have a method which save settings to file. This method is called if value of dateTimePicker changed. But I have in Form_Load loading settings -> I read value from file and assign it with dateTimePicker, but this call method save_settings (couse value changed). And in this moment is problem couse the file is open by program -> reading values and program wanna write to file changes...
  How can I do that?</p>