C# – Converting a string of ASCII into normal string C#

asciic

Possible Duplicate:
.NET Convert from string of Hex values into Unicode characters (Support different code pages)

Looking to convert a string containing an ASCII string into text, i seem to be only be able to find System.Text.ASCIIEncoding.ASCII.GetString which converts from a Byte[] but in this circumstance I would like to be able to do it from a string.

its a string containing ASCII hex: For example : ASCI = 47726168616D would equal Graham

Are there any built in functions for this? help would be appreciated, thank you.

Best Answer

private static string GetStringFromAsciiHex(String input)
{
    if (input.Length % 2 != 0)
        throw new ArgumentException("input");

    byte[] bytes = new byte[input.Length / 2];

    for (int i = 0; i < input.Length; i += 2)
    {
        // Split the string into two-bytes strings which represent a hexadecimal value, and convert each value to a byte
        String hex = input.Substring(i, 2);
        bytes[i/2] = Convert.ToByte(hex, 16);                
    }

    return System.Text.ASCIIEncoding.ASCII.GetString(bytes);
}

Related Solutions

C# – the difference between String and string in C#

string is an alias in C# for System.String.
So technically, there is no difference. It's like int vs. System.Int32.

As far as guidelines, it's generally recommended to use string any time you're referring to an object.

e.g.

string place = "world";

Likewise, I think it's generally recommended to use String if you need to refer specifically to the class.

e.g.

string greet = String.Format("Hello {0}!", place);

This is the style that Microsoft tends to use in their examples.

It appears that the guidance in this area may have changed, as StyleCop now enforces the use of the C# specific aliases.

Python – How to get the ASCII value of a character

From here:

The function ord() gets the int value of the char. And in case you want to convert back after playing with the number, function chr() does the trick.

>>> ord('a')
97
>>> chr(97)
'a'
>>> chr(ord('a') + 3)
'd'
>>>

In Python 2, there was also the unichr function, returning the Unicode character whose ordinal is the unichr argument:

>>> unichr(97)
u'a'
>>> unichr(1234)
u'\u04d2'

In Python 3 you can use chr instead of unichr.

ord() - Python 3.6.5rc1 documentation

ord() - Python 2.7.14 documentation