C# 跨语言更正正则表达式模式

我在

它用于模式匹配CSV分隔值（更具体地说，是分隔逗号，可以拆分），在该站点上，它可以很好地处理我的测试数据。您可以在测试时链接的站点底部面板中看到我认为的JavaScript实现

然而，当我试图在C#/.net中实现这一点时，匹配并不能正常工作。 我的实施：

Regex r = new Regex(",(?=(?:[^\"]*\"[^\"]*\")*(?![^\"]*\"))", RegexOptions.ECMAScript);
//get data...
foreach (string match in r.Split(sr.ReadLine()))
{
    //lblDev.Text = lblDev.Text + match + "<br><br><br><p>column:</p><br>";
    dtF.Columns.Add(match);
}

//more of the same to get rows

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使用正确的工具进行作业。正则表达式不适合解析CSV，因为CSV可以有无限数量的嵌套引号

改用这个：

快速CSV阅读器

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我们在生产代码中使用它。它工作得很好，让您了解解析是多么复杂。有关复杂性的更多信息，请查看解决方案中包含的800多个单元测试。

您的C#regex在LinqPad中对我来说很好，但您的数据在最后一行数据中确实包含一个换行符。因此，您不能简单地使用

sr.ReadLine（）

读取数据。

您是指前六行还是前六列？如果是行；然后需要查看

sr.ReadLine（）

及其周围的循环，以确保正确读取数据。也；我注意到，您的测试数据在第二个数据行中的产品描述列的中间包含一个换行符。这样的换行符会影响结果。

Regex r = new Regex(",(?=(?:[^\"]*\"[^\"]*\")*(?![^\"]*\"))", RegexOptions.ECMAScript);
//get data...
foreach (string match in r.Split(sr.ReadLine()))
{
    //lblDev.Text = lblDev.Text + match + "<br><br><br><p>column:</p><br>";
    dtF.Columns.Add(match);
}

//more of the same to get rows

CategoryName,SubCategoryName,SupplierName,SupplierCode,ProductTitle,Product Company ,ProductCode,Product_Index,ProductDescription,Product BestSeller,ProductDimensions,ProductExpressDays,ProductBrandName,ProductAdditionalText ,ProductPrintArea,ProductPictureRef,ProductThumnailRef,ProductQuantityBreak1 (QB1),ProductQuantityBreak2 (QB2),ProductQuantityBreak3 (QB3),ProductQuantityBreak4 (QB4),ProductPlainPrice1,ProductPlainPrice2,ProductPlainPrice3,ProductPlainPrice4,ProductColourPrice1,ProductColourPrice2,ProductColourPrice3,ProductColourPrice4,ProductExtraColour1,ProductExtraColour2,ProductExtraColour3,ProductExtraColour4,SellingPrice1,SellingPrice2,SellingPrice3,SellingPrice4,ProductCarriageCost1,ProductCarriageCost2,ProductCarriageCost3,ProductCarriageCost4,BLACK,BLUE,WHITE,SILVER,GOLD,RED,YELLOW,GREEN,ProductOtherColors,ProductOrigination,ProductOrganizationCost,ProductCatalogEntry,ProductPageNumber,ProductPersonalisationType1 (PM1),ProductPrintPosition,ProductCartonQuantity,ProductCartonWeight,ProductPricingExpering,NewProduct,ProductSpecialOffer,ProductSpecialOfferEnd,ProductIsActive,ProductRepeatOrigination,ProductCartonDimession,ProductSpecialOffer1,ProductIsExpress,ProductIsEco,ProductIsBiodegradable,ProductIsRecycled,ProductIsSustainable,ProductIsNatural
Audio,Speakers and Headphones,The Prime Time Company,CM5064:In-ear headphones,Silly Buds,,10058,372,"Small, trendy ear buds with excellent sound quality and printing area actually on each ear- piece. Plastic storage box, with room for cables be wrapped around can also be printed.",FALSE,70 x 70 x 20mm,,,,10mm dia,10058.jpg,10058.jpg,100,250,500,1000,2.19,2.13,2.06,1.99,0.1,0.1,0.05,0.05,0.1,0.1,0.05,0.05,3.81,3.71,3.42,3.17,0,0,0,0,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,,30,,TRUE,24,Screen Printed,Earpiece,200,11,,TRUE,,,TRUE,15,,,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE
Audio,Speakers and Headphones,The Prime Time Company,CM5058:Headstart,Head Start,,10060,372,"Lightweight, slimline, foldable and patented headphones ideal for the gym or exercise. These
headphones uniquely hang from the ears giving security, comfort and an excellent sound quality. There is also a secret cable winding facility.",FALSE,130 x 85 x 45mm,,,,30mm dia,10060.jpg,10060.jpg,100,250,500,1000,5.6,5.43,5.26,5.09,0.1,0.1,0.05,0.05,0.1,0.1,0.05,0.05,9.47,8.96,8.24,7.97,0,0,0,0,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE,,30,,TRUE,24,Screen Printed,print plate on ear (s),100,11,,TRUE,,,TRUE,15,,,FALSE,FALSE,FALSE,FALSE,FALSE,FALSE