using System;
using System.IO;

class ConsoleReadLineTest
{
static void Main(string[] args)
{
using(StreamWriter sw = File.CreateText("input.txt"))
{
Console.WriteLine("Type some text and use backspace to delete some chars before hitting ENTER");
sw.WriteLine(Console.ReadLine());
}
using(StreamReader sw = File.OpenText("input.txt"))
{
if(sw.ReadLine().IndexOf('\b') == -1)
{
Console.WriteLine("Everything ok");
}
else
{
Console.WriteLine("Input from Console.ReadLine() contains backspace char. Something is wrong");
}
}
}
}