正则表达式：如何在引号，逗号，空格和换行符之间抓取字符串？

Question

I have a list of strings in a .txt file, and I want to grab the data within quotes, commas, spaces, and new line.

Here is the example of the listings:

CurCode "608", "840", "784", "036", "048", "124", "756", "156", "208", "978", "826", "344", "360", "376", "356", "392", "410", "414", "484", "458", "578", "554", "634", "643", "682", "752", "702", "764", "901", "840", "704", "710"

I have tried the different approaches from comments on similar questions but they don't seem to work for me.

Answer 1

var list = Regex.Matches(input, @"\d+").Cast<Match>().Select(m => m.Value)
                .ToList();

Answer 2

You can simply split, trim and remove the quotes:

var list =
    str.Split(new string[] {","}, StringSplitOptions.RemoveEmptyEntries)
    .Select(x => x.Trim().Replace("\"", ""));

Answer 3

for this partícular format, regex will fill your needs:

//sample created with http://regexhero.net/tester/
string strRegex = @"""(?:\d+)""";
RegexOptions myRegexOptions = RegexOptions.None;
Regex myRegex = new Regex(strRegex, myRegexOptions);
string strTargetString = @"""608"", ""840"", ""784"", ""036"", ""048"", ""124"", ""756"", ""156"", ""208"", ""978"", ""826"", ""344"", ""360"", ""376"", ""356"", ""392"", ""410"", ""414"", ""484"", ""458"", ""578"", ""554"", ""634"", ""643"", ""682"", ""752"", ""702"", ""764"", ""901"", ""840"", ""704"", ""710""";

foreach (Match myMatch in myRegex.Matches(strTargetString))
{
  if (myMatch.Success)
  {
   //Do your stuff with the value here: myMatch.Groups[0].Value 
  }
}

Answer 4

You can also do it this way:

Using string manipulation: (Recommended)

Sample Code:

var lst = sampleStr.Replace(""",""",",").Replace("CurCode ""","").TrimEnd('"').Split(',');

Using regex try out this pattern:

(?<=[,\s]\")(.*?)(?=\")

This pattern is enough capable to handle the quoted numbers and well as some string

Live Demo

Sample Code:

MatchCollection mcol = regex.Matches(sampleStr,@"(?<=[,\s]\")(.*?)(?=\")");

foreach(Match m in mcoll)
{
    Debug.Print(m.ToString());  // See output window
}