Check your in_Config dictionary. It may not be passed correctly as an argument and is therefore null/nothing. If you’re using this in Main.xaml, it should just be Config and not in_Config.
This issue occurs when one of your variables is null. Run your code in debug with the locals panel open, you can see which variables are blank when the code throws an exception
i want to extract the information of outlook i.e from,to,date,subject in excel… somehow all the information is extracted except ‘date and to’ is not extracted…
in From- it shows object reference not to set an instance of object and in received date it shows blank…wht to do??