[Solved] Fetching lines between two different line of StreamReader in a List in c#

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It looks like you just need to change the logic slightly:

  1. When you find the start line, set your variable to true (and continue the loop).
  2. When you find the end line, set your variable to false (and continue the loop, or break the loop if you only expect to have one section to capture).
  3. If your variable is true, capture the line

For example:

while ((line = reader.ReadLine()) != null)
{
    if (line.StartsWith(start_token))
    {
        // We found our start line, so set "correct section" variable to true
        inCorrectSection = true;
        continue;
    }

    if (line.StartsWith(end_token))
    {                           
        // We found our end line, so set "correct section" variable to false
        inCorrectSection = false;
        continue; // Change this to 'break' if you don't expect to capture more sections
    }

    if (inCorrectSection)
    {
        // We're in the correct section, so capture this line
        myList.Add(line);
    }
}

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solved Fetching lines between two different line of StreamReader in a List in c#