The following C# code sample can be used for converting a Hexadecimal String(hex string) to ASCII.
private string HexString2Ascii(string hexString)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i <= hexString.Length - 2; i += 2)
{
sb.Append(Convert.ToString(Convert.ToChar(Int32.Parse(hexString.Substring(i, 2), System.Globalization.NumberStyles.HexNumber))));
}
return sb.ToString();
}
Muito obrigado!
By: Diego on October 6, 2008
at 5:49 pm
Your Welcome!
By: Praveen on October 6, 2008
at 6:06 pm
hi, would there be a better alternative other than stringbuilder? cos my hex string is very very very long. it would be best if it can build an unlimited amount.
By: kenny on October 21, 2008
at 4:00 am
hey it’s okay. the problem doesn’t lie with the stringbuilder. thanks for the code!
By: kenny on October 21, 2008
at 9:03 am
Hi,i need to convert the data “7820 6a75 6d70 6564 206f 7665 7220″ into ascii using c# ,how is it done, can anyone help,please.
By: Crystel on January 28, 2009
at 2:06 pm
thanks a lot
By: sam on June 17, 2009
at 8:36 pm
This might cause problems if quotes itself (or some other special characters) are part of the string. A better way would be using bytes array and then using encoding to get string. For example i ran into an issue where this was the ascii result “I”ÊôL” but the hex value of 4994CAF44C would not translate into it using stringbuilder. Here’s my solution. Please let me know what you think. thx
private static string HexString2Ascii(string hexString)
{
byte[] tmp;
int j = 0;
tmp = new byte[(hexString.Length)/2];
for (int i = 0; i <= hexString.Length – 2; i += 2)
{
tmp[j] =(byte)Convert.ToChar(Int32.Parse(hexString.Substring(i, 2), System.Globalization.NumberStyles.HexNumber));
j++;
}
return Encoding.GetEncoding(1252).GetString(tmp);
}
By: Geek on July 1, 2009
at 8:03 pm