Number of Days in a month

For Getting First Date of the Month:

static void FirstOfMonth(Args _args)

{

   TransDate TransDate=today();

   TransDate FirstOfMth;

   ;

   FirstOfMth=mkdate(1,mthofyr(TransDate),year(TransDate));

   info(date2str(FirstOfMth,123,2,2,2,2,4));

}

Last Date of the Month
TransDate TransDate=today();
    TransDate LastOfMth;
    LastOfMth=endmth(TransDate);
    this.WorkingDays = int2str(dayOfMth(LastOfMth));