Question

我不理解水晶报告中公式中的错误

Local StringVar DistStatePin;
DistStatePin := " ";
If Not isnull({DonationByReceiptNo.place}) Then DistStatePin := DistStatePin + Space(1) + Trim({DonationByReceiptNo.place}) + ", ";
If Not isnull({DonationByReceiptNo.district}) Then 
    If (Mid(Trim({DonationByReceiptNo.district}),2,Length(Trim({DonationByReceiptNo.district}))-2)) <> Trim({DonationByReceiptNo.place}) Then
    DistStatePin := DistStatePin + Space(1) + Trim({DonationByReceiptNo.district}) + ", ";
If Not isnull({DonationByReceiptNo.state}) Then 
    If Trim({DonationByReceiptNo.state}) <> Trim({DonationByReceiptNo.place}) Then
    DistStatePin := DistStatePin + Space(1) + Trim({DonationByReceiptNo.state});
If Not isnull({DonationByReceiptNo.Pincode}) Then DistStatePin := DistStatePin + Space(1) + Trim({DonationByReceiptNo.Pincode});

trim(DistStatePin);

，错误是

Error in File C:\Users\Gautam\AppData\Local\Temp\temp_d5c95ff2-0ec9-458e-8a3a-bc545097fd1a {9FBD7AEE-ED90-4886-848F-262758592B77}.rpt:
Error in formula  <DistState>. 
'Local StringVar DistStatePin;
'
String length is less than 0 or not an integer.

Answer 1

可能是这一节：

Mid( Trim({DonationByReceiptNo.district}), 2, Length(Trim({DonationByReceiptNo.district}))-2 )

为了清晰起见而进行了重构：

Local Stringvar district:=Trim({DonationByReceiptNo.district});
Mid( district, 2, Length(district)-2 );

如果district=""那么您的公式将是Mid( "", 2, 0-2 )，这会给您一个错误。

水晶报告公式中的错误

1 个答案: