CODEWITHSUNDEEP
c#translation
PrimeGamer25
PrimeGamer25

Reputation: 33

Turning the decimal values of characters in binary into character

I am working o a project that turns message into ascii decimal values... this side is not important, the problem is it needs to read it back so the translation is basically like this:

 if (textBox1.Text.Contains("a"))
       { 
                textBox3.Text = textBox3.Text.Replace("a", "97");
            }
            if (textBox1.Text.Contains("b"))
            { 
                textBox3.Text = textBox3.Text.Replace("b", "98");
            }
.
.
.
        if (textBox1.Text.Contains("Ğ"))
        {
            textBox3.Text = textBox3.Text.Replace("Ğ", "286");
        }
        if (textBox1.Text.Contains("ş"))
        {
            textBox3.Text = textBox3.Text.Replace("ş", "351");
        }

this translation works perfect. but translating back the output is the problem. my translating back method in a nutshell:

        if (sonmesajBinary.Text.Contains("97"))
        {
            okunanMesaj.Text = okunanMesaj.Text.Replace("97", "a");
        }

        if (sonmesajBinary.Text.Contains("98"))
        {
            okunanMesaj.Text = okunanMesaj.Text.Replace("98", "b");
        }

        if (sonmesajBinary.Text.Contains("99"))
        {
            okunanMesaj.Text = okunanMesaj.Text.Replace("99", "c");
        }

and the problem is lets say the output is 140 but it also includes "40" so pc gets it wrong. That's my problem, and i require your kind help:). i am kinda noob so sorry for my mistakes and i am 17 also english is not my native language. note: ascii values might not be the real ones, these are just for example.

Upvotes: 1

Views: 88

Answers (2)

PrimeGamer25
PrimeGamer25

Reputation: 33

It was fixed thanks to Tom Blodget, all I needed to do was delimit. So I added 0 to beginning of every 2 digit values:D

if (textBox1.Text.Contains("a"))
{ 
    textBox3.Text = textBox3.Text.Replace("a", "097");
}

Upvotes: 0

KSK
KSK

Reputation: 695

There are many problems with your code there. Checking Contains will return true for any number of occurrences of a character at any location. You're checking in textBox1 and replacing in textBox3. You're checking each character known to you but it is possible there are more! There are easier ways of getting the byte/int/number equivalent of your character based on the encoding of your input.

Here's a rudimentary solution based on comments following the question. You however need to read more about code pages and then encodings. This is only part of the Encrypt operation. I'm sure you can figure out how to replace the contents and later also Decrypt to usable format. Cheers! Happy coding.

        static void Main(string[] args)
        {
            string fileContents = "";
            int encryptKey = 3; // Consider getting this from args[0], etc.
            using (FileStream fs = File.OpenRead(@"C:\Users\My\Desktop\testfile.txt"))
            using (TextReader tr = new StreamReader(fs))
            {
                fileContents = tr.ReadToEnd();
            }
            byte[] asciiBytesOfFile = Encoding.ASCII.GetBytes(fileContents);
            int[] encryptedContents = Encrypt(encryptKey, asciiBytesOfFile);
        }

        private static int[] Encrypt(int encryptKey, byte[] asciiBytesOfFile)
        {
            int[] encryptedChars = new int[asciiBytesOfFile.Length];
            for (int i = 0; i < asciiBytesOfFile.Length; i++)
            {
                encryptedChars[i] = encryptKey ^ asciiBytesOfFile[i];
            }
            return encryptedChars;
        }

Upvotes: 1

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