Question

我使用此代码省略引号并用逗号分隔。我有像这样的数据的csv文件的内容。例如：
“1111”，“05-24-2017”，“08:30”，“0”，“TRAVEL”
“2222”， “2017年5月25日”， “8时20”， “0”， “旅行”

我使用了这段代码：

   public bool ReadEntrie(int id, ref string name)
    {
        int count = 0;
        CreateConfigFile();
        try
        {
            fs = new FileStream(data_path, FileMode.Open);
            sr = new StreamReader(fs);
            bool cond = true;
            string temp = "";
            while (cond == true)
            {
                if ((temp = sr.ReadLine()) == null)
                {
                    sr.Close();
                    fs.Close();
                    cond = false;
                    if (count == 0)
                        return false;
                }
                if (count == id)
                {
                    string[] stringSplit = temp.Trim('\"').Split(new 
                    String[] { "," }, StringSplitOptions.None);
                    //string[] stringSplit = temp.Split(',');
                    int _maxIndex = stringSplit.Length;
                    name = stringSplit[0];                       
                }
                count++;
            }
            sr.Close();
            fs.Close();
            return true;
        }
        catch
        {
            return false;
        }
    }

Answer 1

如果没有逗号或引号作为数据的一部分，例如

"12,34","56","a""bc"   ->  12,34   56   a"bc

你可以放一个简单的 Linq ：

 string[][] result = File
   .ReadLines(@"C"\MyData.csv")
   .Select(line => line
      .Split(',')
      .Select(item => item.Trim('"'))
      .ToArray())
   .ToArray();

进一步改进是返回一个定制类的数组：

 MyClass[] result = File
   .ReadLines(@"C"\MyData.csv")
   .Select(line => line
      .Split(','))
   .Select(items => new MyClass() {
      Id = items[0].Trim('"'),
      Date = DateTime.ParseExact(items[1].Trim('"') + " " + items[2].Trim('"'), 
                                "MM-dd-yyyy hh:mm",
                                 CultureInfo.InvariantCulture),
      Code = items[3].Trim('"'),
      Text = items[4].Trim('"'), 
    }) 
   .ToArray();

Answer 2

The problem is not on that function. It is by other function and I used trim 
for it.                                                            
string[] stringSplit = temp.Split(',');
int _maxIndex = stringSplit.Length;
name = stringSplit[0].Trim('"');
lastname = stringSplit[1].Trim('"');
phone = stringSplit[2].Trim('"');
mail = stringSplit[3].Trim('"');
website = stringSplit[4].Trim('"');

Answer 3

尝试这个简单的功能。它将处理双引号之间的双引号和逗号。

private string[] GetCommaSeperatedWords(string sep, string line)
{
    List<string> list = new List<string>();
    StringBuilder word = new StringBuilder();
    int doubleQuoteCount = 0;
    for (int i = 0; i < line.Length; i++)
    {
        string chr = line[i].ToString();
        if (chr == "\"")
        {
            if (doubleQuoteCount == 0)
                doubleQuoteCount++;
            else
                doubleQuoteCount--;

            continue;
        }
        if (chr == sep && doubleQuoteCount == 0)
        {
            list.Add(word.ToString());
            word = new StringBuilder();
            continue;
        }
        word.Append(chr);
    }

    list.Add(word.ToString());

    return list.ToArray();
}

用双引号括起来并在csv文件中用逗号分隔

3 个答案: