title: DistinctCount On A specific condition In Power bi
body: <p>I need to take the DistinctCount(InvNumber) of a InvNumber column by creating a new measures that is  #NoofInvoice, 
  I need to show that column In MY report, but Column #NoofInvoice I want to take on Condition that If(OrderType='SALES' and OrderType is a column which contain two values SALES and RETURN or then only I need distinctcount(InvNumber)) in Power bi</p>