Question

我是Crystal Report中的菜鸟。

我收到String length is less than 0 or not an integer错误。

on left({ORDERCHECKVIEW.LOTNUMBER},InStrRev ({ORDERCHECKVIEW.LOTNUMBER},"-" )-1)

以下代码：

local StringVar mDate;
local StringVar mMonth;
local StringVar mDay;
local StringVar mYear;

if {ORDERCHECKVIEW.LOTNUMBER} =  'N/A'
then 'N/A'

else

mDate:= left({ORDERCHECKVIEW.LOTNUMBER},InStrRev ({ORDERCHECKVIEW.LOTNUMBER},"-" )-1);     
mMonth:= left(mDate,2);  
mDay := Mid (mDate,4 ,2 );  
mYear := totext(2010 + CDbl (right(mDate,InStr(StrReverse(left({ORDERCHECKVIEW.LOTNUMBER},InStrRev ({ORDERCHECKVIEW.LOTNUMBER},"-" )-1)),"-") -1 )),0,""); // transform   2017

cDate(cDbl(mYear),cDbl(mMonth),cDbl(mDay));  

    cDate(cDbl(mYear),cDbl(mMonth),cDbl(mDay));

任何人都可以解释一下有什么问题吗？我不认为我的if-else陈述是错误的。

仅供参考，我之前已经提出过一个问题，这个问题是一个后续行动：（Advanced conversion of a single number to year, along with hyphen）

Answer 1

复合if-else

    local StringVar mDate;
    local StringVar mMonth;
    local StringVar mDay;
    local StringVar mYear;

    if {ORDERCHECKVIEW.LOTNUMBER} =  "N/A"
    then "N/A"

    else
    (
    mDate:= left({ORDERCHECKVIEW.LOTNUMBER},InStrRev ({ORDERCHECKVIEW.LOTNUMBER},"-" )-1);     
    mMonth:= left(mDate,2);  
    mDay := Mid (mDate,4 ,2 );  
    mYear := totext(2010 + CDbl (right(mDate,InStr(StrReverse(left({ORDERCHECKVIEW.LOTNUMBER},InStrRev ({ORDERCHECKVIEW.LOTNUMBER},"-" )-1)),"-") -1 )),0,""); // transform   2017

//      cDate(cDbl(mYear),cDbl(mMonth),cDbl(mDay));

ToText(cDate(cDbl(mYear),cDbl(mMonth),cDbl(mDay)),"MM/dd/yyyy") ;

    )

crystal report - 声明数组时的if else语句：字符串长度错误

1 个答案: