You can use File.ReadAllText([FilePah])
to read the file.
public static void SeekReader() {
FileStream fsr = new FileStream("fileone.txt", FileMode.Open, FileAccess.Read);
StreamReader Sr = new StreamReader(fsr);
string line = string.Empty;
var ctr = 0;
while(ctr < 3){
line = Sr.ReadLine();
ctr++;
}
Console.WriteLine(line);
Sr.Close();
fsr.Close();
}