CSV更改定界符 [英] CSV change delimiter

问题描述

我正在读取CSV文件，并将定界符从，更改为 |。但是，我在我的数据（我无法控制）中注意到，在某些情况下，我有一些数据不希望遵循此规则，并且其中包含带引号的数据，并带有逗号。我想知道如何最好地替代这些例外？

i'm reading a CSV file and changing the delimiter from a "," to a "|". However i've noticed in my data (which I have no control over) that in certain cases I have some data that does not want to follow this rule and it contains quoted data with a comma in it. I'm wondering how best to not replace these exceptions?

例如：

ABSON TE，Wick Lane， Abson，Pucklechurch，布里斯托尔，埃文，英格兰，BS16
9SD，37030,17563，BS0001A1，

ABSON TE,Wick Lane,"Abson, Pucklechurch",Bristol,Avon,ENGLAND,BS16 9SD,37030,17563,BS0001A1,,

应更改为：

ABSON TE | Wick Lane | Abson，Pucklechurch |布里斯托尔|雅芳| ENGLAND | BS16
9SD | 37030 | 17563 | BS0001A1 ||

ABSON TE|Wick Lane|"Abson, Pucklechurch"|Bristol|Avon|ENGLAND|BS16 9SD|37030|17563|BS0001A1||

读取和替换CSV文件的代码是这个：

The code to read and replace the CSV file is this:

var contents = File.ReadAllText(filePath).Split(new string[] { "\n", "\r\n" }, StringSplitOptions.RemoveEmptyEntries).ToArray();
var formattedContents = contents.Select(line => line.Replace(',', '|'));

推荐答案

对于其他为此苦苦挣扎的人，我最终使用了内置的.net csv解析器。请参阅此处以了解更多详细信息和示例： http：// coding。 abel.nu/2012/06/built-in-net-csv-parser/

For anyone else struggling with this, I ended up using the built in .net csv parser. See here for more details and example: http://coding.abel.nu/2012/06/built-in-net-csv-parser/

我的特定代码：

 // Create new parser object and setup parameters
var parser = new TextFieldParser(new StringReader(File.ReadAllText(filePath)))
{
    HasFieldsEnclosedInQuotes = true,
    Delimiters = new string[] { "," },
    TrimWhiteSpace = true
};

var csvSplitList = new List<string>();

// Reads all fields on the current line of the CSV file and returns as a string array
// Joins each field together with new delimiter "|"
while (!parser.EndOfData)
{
    csvSplitList.Add(String.Join("|", parser.ReadFields()));
}

// Newline characters added to each line and flattens List<string> into single string
var formattedCsvToSave = String.Join(Environment.NewLine, csvSplitList.Select(x => x));

// Write single string to file
File.WriteAllText(filePathFormatted, formattedCsvToSave);
parser.Close();

这篇关于CSV更改定界符的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！