How to read character in a file 1 by 1 c#

Question

I want my program to read a text file all characters 1 by 1 and whereever it finds inverted comma ( \" ), it adds a semicolon before that inverted comma. For eg we have a pa

Answer 1

Swap the order of the operations:

    if (Convert.ToInt32(ch) == 34)
    {
        Console.Write(@";");
    }
    Console.Write(ch);

e.g. don't write the original character until AFTER you've decided to output a semicolon or not.