Formula in crystal report to get opening balance and closing balance ?

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C#

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CrystalReports

how to code and formula in crystal report to get opening balance and closing balance ?

I Am try to make school software where a report are there are some expense and some income amount like a credit and debit as bellow

opening balance
opening balance	credit	debit	balance	
opening balance                 220000	
                20000     0     240000	
                    0   5000    235000	
                    0   1000    234000	
                 6000      0    240000	
                    0 100000    140000	
                    0  80000     60000	Closing Balance

how to get this opening balance where i select date like this
from 01-01-2016 To 30-01-2016 and so on it hows last balance as opening and end with closing balance

What I have tried:

how to code and formula in crystal report to get opening balance and closing balance ?

I Am try to make school software where a report are there are some expense and some income amount like a credit and debit as bellow

opening balance
opening balance credit debit balance
opening balance 220000
20000 0 240000
0 5000 235000
0 1000 234000
6000 0 240000
0 100000 140000
0 80000 60000 Closing Balance
how to get this opening balance where i select date like this
from 01-01-2016 To 30-01-2016 and so on it hows last balance as opening and end with closing balance