Невозможно неявно преобразовать тип 'string' в 'string[]'

// hey guys pls I need your help with this 

String EmailAdresses = AstraProperties.getProperties(AstraProperties.EMAIL_NOTIFICATIONS);


// when I print out EmailAdresses, it returns a long string of addresses
//jamesb@live.com,jbrowm@yahoo.com,cmsw@msn.com
// then I want to split it and place it in EmailArray


String[] EmailArrray = EmailAdresses.Split(",")

// but I get the error: Cannot implicitly convert type 'string' to 'string[]' 


// thanks for the help