Hello all I am new to crystal reports. I just want to know what is a
local and a
global variable. Please suggest what is the difference between local and global variables.
local variable: as the name says it is local to the formula created... it can't be used outside the formula declared.
Use: if you want to use the same name for a variable across many formulas then it should be used.
Global Variable: it can be used out side the scope of the formula created.
use: during calculations there will be use to reset the variable value to 0 anywhere in the report then this should be used.
Along with this there is one more variable that is `Shared` it also acts as a global variable use: it is also used in resetting the value and also pass values between main report and sub report and viceversa
Global numbervar a; a:=a+1; a
Now I want to reset the value to 0 on change of every group then I use the below formula in group header as below.
Global Numbervar a; a:=0