streamreader not getting proper count of lines

Question

It counts 23 but there are 30 lines that are "Placeholder:Placeholder"............................................................................

      using (StreamReader Reader = new StreamReader(File.Open(AccountsFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
            {
                    string line;
                    while ((line = Reader.ReadLine()) != null)
                    {
                        if (line == "Placeholder:Placeholder")
                        {
                            int count = line.Count();  
                        }
                    }
            }

Answer 1

Declare a variable to store the count and increment it every time a line matches a pattern string.

using (StreamReader Reader = new StreamReader(File.Open(AccountsFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite)))
{
    string line;
    int count = 0;
    while ((line = Reader.ReadLine()) != null)
    {
        if (line == "Placeholder:Placeholder")
        {
            count++;
        }
    }
}