How to get ASCII value of string in C#

Question

I want to get the ASCII value of characters in a string in C#.

If my string has the value "9quali52ty3", I want an array with the ASCII values of each of the 11 characters.

How can I get ASCII values in C#?

Answer 1

From MSDN

string value = "9quali52ty3";

// Convert the string into a byte[].
byte[] asciiBytes = Encoding.ASCII.GetBytes(value);

You now have an array of the ASCII value of the bytes. I got the following:

57 113 117 97 108 105 53 50 116 121 51

Answer 2

string s = "9quali52ty3";
foreach(char c in s)
{
  Console.WriteLine((int)c);
}

Answer 3

This should work:

string s = "9quali52ty3";
byte[] ASCIIValues = Encoding.ASCII.GetBytes(s);
foreach(byte b in ASCIIValues) {
    Console.WriteLine(b);
}

Answer 4

Do you mean you only want the alphabetic characters and not the digits? So you want "quality" as a result? You can use Char.IsLetter or Char.IsDigit to filter them out one by one.

string s = "9quali52ty3";
StringBuilder result = new StringBuilder();
foreach(char c in s)
{
  if (Char.IsLetter(c))  
    result.Add(c);
}
Console.WriteLine(result);  // quality

Answer 5

string value = "mahesh";

// Convert the string into a byte[].
byte[] asciiBytes = Encoding.ASCII.GetBytes(value);

for (int i = 0; i < value.Length; i++)


    {
        Console.WriteLine(value.Substring(i, 1) + " as ASCII value of: " + asciiBytes[i]);
    }

Answer 6

byte[] asciiBytes = Encoding.ASCII.GetBytes("Y");
foreach (byte b in asciiBytes)
{
    MessageBox.Show("" + b);
}

Answer 7

This program will accept more than one character and output their ASCII value:

using System;
class ASCII
{
    public static void Main(string [] args)
    {
        string s;
        Console.WriteLine(" Enter your sentence: ");
        s = Console.ReadLine();
        foreach (char c in s)
        {
            Console.WriteLine((int)c);
        }
    }
}

Answer 8

Earlier responders have answered the question but have not provided the information the title led me to expect. I had a method that returned a one character string but I wanted a character which I could convert to hexadecimal. The following code demonstrates what I thought I would find in the hope it is helpful to others.

  string s = "\ta£\x0394\x221A";   // tab; lower case a; pound sign; Greek delta;
                                   // square root  
  Debug.Print(s);
  char c = s[0];
  int i = (int)c;
  string x = i.ToString("X");
  c = s[1];
  i = (int)c;
  x = i.ToString("X");
  Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
  c = s[2];
  i = (int)c;
  x = i.ToString("X");
  Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
  c = s[3];
  i = (int)c;
  x = i.ToString("X");
  Debug.Print(c.ToString() + " " + i.ToString() + " " + x);
  c = s[4];
  i = (int)c;
  x = i.ToString("X");
  Debug.Print(c.ToString() + " " + i.ToString() + " " + x);

The above code outputs the following to the immediate window:

a£Δ√

a 97 61

£ 163 A3

Δ 916 394

√ 8730 221A

Answer 9

string text = "ABCD";
for (int i = 0; i < text.Length; i++)
{
  Console.WriteLine(text[i] + " => " + Char.ConvertToUtf32(text, i));
}

If I remember correctly, the ASCII value is the number of the lower seven bits of the Unicode number.

Answer 10

If you want the charcode for each character in the string, you could do something like this:

char[] chars = "9quali52ty3".ToCharArray();

Answer 11

You can remove the BOM using:

//Create a character to compare BOM
char byteOrderMark = (char)65279;
if (sourceString.ToCharArray()[0].Equals(byteOrderMark))
{
    targetString = sourceString.Remove(0, 1);
}

Answer 12

Or in LINQ:

string value = "9quali52ty3";

var ascii_values = value.Select(x => (int)x);

var as_hex = value.Select(x => ((int)x).ToString("X02"));

Answer 13

I want to get the ASCII value of characters in a string in C#.

Everyone confer answer in this structure. If my string has the value "9quali52ty3", I want an array with the ASCII values of each of the 11 characters.

but in console we work frankness so we get a char and print the ASCII code if i wrong so please correct my answer.

 static void Main(string[] args)
        {
            Console.WriteLine(Console.Read());
            Convert.ToInt16(Console.Read());
            Console.ReadKey();
        }

Answer 14

Why not the old fashioned easy way?

    public int[] ToASCII(string s)
    {
        char c;
        int[] cByte = new int[s.Length];   / the ASCII string
        for (int i = 0; i < s.Length; i++)
        {
            c = s[i];                        // get a character from the string s
            cByte[i] = Convert.ToInt16(c);   // and convert it to ASCII
        }
        return cByte;
    }