How to use loop for in a formula in crystal report?

Question

I have a table in the details section with 3 columns (ID_Player, Name Player, medal) the medal column take gold, silver or bronze. and in the header page section i have 3 images for each type of medal i need to display the images according to the medal value displayed in the details section??

I try: in the supression option of the image 1 (gold):

numbervar i ;
for i:=1 to count({table.medal}) do
(
if ({table.medal} = "gold") then false else true
)

the same code for the 2 others images but always it read only the first record !!

Answer 1

You have to check the existence of a medal in separate formula that will be evaluated for all the records and pass the result as a global variable to suppress formula:

formula hasMedal:

Global NumberVar num_var;
If {table.medal} = "gold" Then
num_var := 1

formula for suppress:

EvaluateAfter({@hasMedal});
Global NumberVar num_var;
num_var = 0;

In your current for-loop the NumberVar i goes through all the values but {table.medal} is pointing at the first row the whole time.

Answer 2

You can not iterate for loop to display images bcoz it it refer to the current row.. you have to use nested if...else..to display image...

 if ({table.medal} = "gold") then 
     false 
else if ({table.medal} = "silver ") then
     false
else if ({table.medal} = "bronze") then    
     false   
else
     true

Answer 3

i try to put @hasmedal in the details section when gold value exist hasmedal take 1 else it take 0 . same thing for the other value (silver and bronze) i have now 2 lines: the first line contain gold and the second contain silver .. the hasmedalGold appears 1 in the first line and 0 in the second line . and the hasmedalSilver appears 0 in the first line and 1 in the second... and hasmedalBronze appears 0 in the 2 lines in the supress formula i put this code :

    EvaluateAfter({@hasmedalGold});
Global NumberVar num_var;
num_var <> 0;
if ({@hasmedalGold} =1)
then false else true   

                                                                                              but the problem persist it display only the gold medal which is in the first line record :(