Question

我有一个.csv文件（我无法控制数据），出于某种原因，它包含所有引号。

"Date","Description","Original Description","Amount","Type","Category","Name","Labels","Notes"
"2/02/2012","ac","ac","515.00","a","b","","javascript://"
"2/02/2012","test","test","40.00","a","d","c",""," "

我正在使用filehelpers，我想知道删除所有这些引号的最佳方法是什么？有没有什么说“如果我看到引号删除。如果找不到引号什么都没做”？

这会混淆数据，因为我会"\"515.00\""有不必要的额外引号（特别是因为在这种情况下我想要的是十进制而不是字符串“。

我也不确定“javascript”是什么以及为什么会产生它，但这是来自我无法控制的服务。

修改这就是我使用csv文件的方式。

    using (TextReader textReader = new StreamReader(stream))
        {
            engine.ErrorManager.ErrorMode = ErrorMode.SaveAndContinue; 

            object[] transactions = engine.ReadStream(textReader);
        }

Answer 1

您可以在属性页面here上使用最佳描述的FieldQuoted属性。请注意，该属性可以应用于任何FileHelpers字段（即使它键入Decimal）。（请记住，FileHelpers类描述了导入文件的规范。因此，当您将Decimal字段标记为FieldQuoted时，您在文件中说，此字段将被引用。< / em>的）

您甚至可以使用
指定引号是否可选
[FieldQuoted('"', QuoteMode.OptionalForBoth)]

这是一个适用于您的数据的控制台应用程序：

class Program { [DelimitedRecord(",")] [IgnoreFirst(1)] public class Format1 { [FieldQuoted] [FieldConverter(ConverterKind.Date, "d/M/yyyy")] public DateTime Date; [FieldQuoted] public string Description; [FieldQuoted] public string OriginalDescription; [FieldQuoted] public Decimal Amount; [FieldQuoted] public string Type; [FieldQuoted] public string Category; [FieldQuoted] public string Name; [FieldQuoted] public string Labels; [FieldQuoted] [FieldOptional] public string Notes; } static void Main(string[] args) { var engine = new FileHelperEngine(typeof(Format1)); // read in the data object[] importedObjects = engine.ReadString(@"""Date"",""Description"",""Original Description"",""Amount"",""Type"",""Category"",""Name"",""Labels"",""Notes"" ""2/02/2012"",""ac"",""ac"",""515.00"",""a"",""b"","""",""javascript://"" ""2/02/2012"",""test"",""test"",""40.00"",""a"",""d"",""c"","""","" """); // check that 2 records were imported Assert.AreEqual(2, importedObjects.Length); // check the values for the first record Format1 customer1 = (Format1)importedObjects[0]; Assert.AreEqual(DateTime.Parse("2/02/2012"), customer1.Date); Assert.AreEqual("ac", customer1.Description); Assert.AreEqual("ac", customer1.OriginalDescription); Assert.AreEqual(515.00, customer1.Amount); Assert.AreEqual("a", customer1.Type); Assert.AreEqual("b", customer1.Category); Assert.AreEqual("", customer1.Name); Assert.AreEqual("javascript://", customer1.Labels); Assert.AreEqual("", customer1.Notes); // check the values for the second record Format1 customer2 = (Format1)importedObjects[1]; Assert.AreEqual(DateTime.Parse("2/02/2012"), customer2.Date); Assert.AreEqual("test", customer2.Description); Assert.AreEqual("test", customer2.OriginalDescription); Assert.AreEqual(40.00, customer2.Amount); Assert.AreEqual("a", customer2.Type); Assert.AreEqual("d", customer2.Category); Assert.AreEqual("c", customer2.Name); Assert.AreEqual("", customer2.Labels); Assert.AreEqual(" ", customer2.Notes); } }

（注意，您的第一行数据似乎有8个字段而不是9个字段，因此我使用Notes标记了FieldOptional字段。

Answer 2

这是一种方法：

string[] lines = new string[]
{
    "\"Date\",\"Description\",\"Original Description\",\"Amount\",\"Type\",\"Category\",\"Name\",\"Labels\",\"Notes\"",
    "\"2/02/2012\",\"ac\",\"ac\",\"515.00\",\"a\",\"b\",\"\",\"javascript://\"",
    "\"2/02/2012\",\"test\",\"test\",\"40.00\",\"a\",\"d\",\"c\",\"\",\" \"",
};

string[][] values =
    lines.Select(line =>
        line.Trim('"')
            .Split(new string[] { "\",\"" }, StringSplitOptions.None)
            .ToArray()
        ).ToArray();

lines数组表示样本中的行。必须将每个"字符转义为C＃字符串文字中的\"。

对于每一行，我们首先删除第一个和最后一个"字符，然后使用","字符序列作为分隔符，将其拆分为子字符串集合。

请注意，如果您的值中自然出现"个字符，则上述代码将无效。（即使已转义）。

修改：如果要从流中读取CSV，您需要做的就是：

var lines = new List<string>();
using (var streamReader = new StreamReader(stream))
    while (!streamReader.EndOfStream)
        lines.Add(streamReader.ReadLine());

上述代码的其余部分将完好无损。

修改：根据您的新代码，检查您是否正在寻找以下内容：

for (int i = 0; i < transactions.Length; ++i)
{
    object oTrans = transactions[i]; 
    string sTrans = oTrans as string;
    if (sTrans != null && 
        sTrans.StartsWith("\"") &&
        sTrans.EndsWith("\""))
    {
        transactions[i] = sTrans.Substring(1, sTrans.Length - 2);
    }
}

Answer 3

我有同样的困境，当我将值加载到list对象中时，我会替换引号：

using System;
using System.Collections.Generic;
using System.IO;
using System.Windows.Forms;

namespace WindowsFormsApplication6
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            LoadCSV();
        }

        private void LoadCSV()
        {
            List<string> Rows = new List<string>();
            string m_CSVFilePath = "<Path to CSV File>";

            using (StreamReader r = new StreamReader(m_CSVFilePath))
            {
                string row;

                while ((row = r.ReadLine()) != null)
                {
                    Rows.Add(row.Replace("\"", ""));
                }

                foreach (var Row in Rows)
                {
                    if (Row.Length > 0)
                    {
                        string[] RowValue = Row.Split(',');

                        //Do something with values here
                    }
                }
            }
        }

    }
}

Answer 4

这段代码可能对我开发的内容有所帮助：

using (StreamReader r = new StreamReader("C:\\Projects\\Mactive\\Audience\\DrawBalancing\\CSVFiles\\Analytix_ABC_HD.csv"))
{
     string row;

     int outCount;
         StringBuilder line=new StringBuilder() ;
         string token="";
         char chr;
         string Eachline;

     while ((row = r.ReadLine()) != null)
     {
         outCount = row.Length;
         line = new StringBuilder();
         for (int innerCount = 0; innerCount <= outCount - 1; innerCount++)
         {                   
             chr=row[innerCount];

             if (chr != '"')
             {
                 line.Append(row[innerCount].ToString());
             }
             else if(chr=='"')
             {
                 token = "";
                 innerCount = innerCount + 1;
                 for (; innerCount < outCount - 1; innerCount++)
                 {
                     chr=row[innerCount];
                     if(chr=='"')
                     {
                         break;
                     }

                     token = token + chr.ToString();                               
                 }

                 if(token.Contains(",")){token=token.Replace(",","");}
                 line.Append(token);
             }                 
         }
         Eachline = line.ToString();
         Console.WriteLine(Eachline);
    }
}

删除文件助手中的引号

4 个答案: