Cross thread operation while working event raised by other object
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I have a class 'userdetails' which is having a event called 'detailschanged'. It will be raised whenever the user detail changes.  
When i am creating a new object of 'userdetails' (objUserDetails) in my new form, i ll subscribe to event 'detailschanged' to indicate the user about the datachange.   

    objUserDetails.detailschanged += InformtoUser

InformtoUser is a method in new form. In InformtoUser method i am accessing form's control(say label's text property).   
When the control is accessed I am getting 'Cross Thread Operation' error.  
How to avoid this cross thread operation??