visual-foxpro - Visual FoxPro 字符串到日期的转换

Question

如何将字符串 30-Jul-17 转换为日期格式 07/30/17？

Answer 1

我不相信 VFP 中有内置方法可以解析缩写的月份字符串(甚至完整的月份名称)。如果是我，我会像这样对每个缩写月份使用 CASE 语句。

lcStringDate = "30-Jul-17"
lcDay = LEFT(lcStringDate, 2)
lcMonth = SUBSTR(lcStringDate, 4, 3)
lcYear = "20"+RIGHT(lcStringDate, 2)

*!* Here you'd need to have code to convert abbreviated
*!* month to a numeric month
DO CASE
    CASE lcMonth = "Jan"
        lcNumericMonth = "1"
    CASE lcMonth = "Feb"
        lcNumericMonth = "2"
    .
    .
    .
ENDCASE

?CTOD(lcNumericMonth+"/"+lcDay+"/"+lcYear)
*!* this would output "07/30/17" if SET CENTURY is OFF
*!* this would output "07/30/2017" if SET CENTURY is ON