How to get multiple a lines of text after specific string in the line c#-CodePudding

this code works but only finds one text even tho there is two texts in file,but sometimes there can be more than two.

            var d = File.ReadAllLines(filePath);
            var t = d.Where(g => g.Contains(cotainstring));
            string[] splited;
            foreach (var item in t)
            {
                splited = item.Split(new string[] { cotainstring}, StringSplitOptions.None);
                return splited[1];
            }
            return null;

this is an example file for reading purposes.

    "?????????????"
    {
        "AccountName"       "dummy1"
        "PersonaName"       "imdummy1"
        "RememberPassword"      "1"
        "MostRecent"        "0"
        "Timestamp"     "boring"
        "WantsOfflineMode"      "0"
        "SkipOfflineModeWarning"        "0"
    }

and

    "?????????????"
    {
        "AccountName"       "dummy2"
        "PersonaName"       "imdummy2"
        "RememberPassword"      "1"
        "MostRecent"        "0"
        "Timestamp"     "boring"
        "WantsOfflineMode"      "0"
        "SkipOfflineModeWarning"        "0"
    }

but my code only gets dummy1, not dummy2 I want to get dummy one and dummy two.

CodePudding user response：

Because you are exiting from foreach loop after the first iteration. Instead of returning from foreach loop, store each string into an List<string> and finally return entire list.

 var d = File.ReadAllLines(filePath);
 var t = d.Where(g => g.Contains(cotainstring));
 //Defin result to store all satisfied strings.
 List<string> result = new List<string>();
 foreach (var item in t)
 {
     var splited = item.Split(new string[] { cotainstring}, StringSplitOptions.None);
     //Store the string in List, instead of return
     result.Add(splited[1]);
 }
 //Return entire string.
 return result;

If above code is written inside function, you need to update the return type of that function from string to List<string>

CodePudding user response：

You can try using Linq Select and some kinf of materialization, say .ToArray() to get a collection of dummies:

var lines = File
  .ReadLines(filPath)
  .Where(line => line.Contains(containstring)) // original query
  .Select(line => line.Split(                  // Select added
     new string[] { containstring }, 
     StringSplitOptions.None)) 
  .Select(items => items[1])
  .ToArray();