对三个文本框求和

Question

我汇总三列以找到余额金额。

OpenigBalance 8257.0000

DRAmount

0

0

0

0

CrAmount

10000

10000

7000

3000

余额金额

-1743

-1743

1257

5257

IN余额金额列RDLC写表达式 = Fields！OpeningBalance.Value + Fields！DrAmount.Value -Fields！CrAmount.Value

我想查看余额金额，例如

余额金额

-1743

-11743

-18743

-21743