Introduction
This article shows you how to convert string to hexadecimal and vice versa.
I did this program for my smart Card application. Earlier, I was using visual basic coding but this time I have to change my code into C#. Usually smart card application is writing data in hex format. I do not have a good hex converter to help me do those conversions that's why I made this.
Using the code
The main code used for the conversion is from the Microsoft.VisualBasic class. Below is the code that is used to convert a string to hexadecimal format. We can't direct convert all characters in to hexadecimal format (eg:@#$%^&*()) that's why firstly I take ASCII value of the character, and then convert ASCII value into hexadecimal format.
//For this I made while loop
while (Data.Length > 0)
{
//first I take each character using substring
sValue= Data.Substring(0, 1).ToString()
//then convert character into ascii.
sValue= Strings.Asc(sValue)
//then convert ascii value into Hex Format
sValue = Conversion.Hex(sValue)
//after converting remove the character.
Data = Data.Substring(1, Data.Length - 1);
sHex = sHex + sValue;
}
Ony two functions I used for this application
Data_Hex_Asc(data)
(This Function for Converting data into hex format
public string Data_Hex_Asc(ref string Data)
{
string Data1 = "";
string sData = "";
while (Data.Length > 0)
//first take two hex value using substring.
//then convert Hex value into ascii.
//then convert ascii value into character.
{
Data1 = System.Convert.ToChar(System.Convert.ToUInt32(Data.Substring(0, 2), 16)).ToString();
sData = sData + Data1;
Data = Data.Substring(2, Data.Length - 2);
}
return sData;
}
Data_Asc_Hex(data)
(This Function for Converting hex into data )
public string Data_Asc_Hex(ref string Data)
{
//first take each charcter using substring.
//then convert character into ascii.
//then convert ascii value into Hex Format
string sValue;
string sHex = "";
while (Data.Length > 0)
{
sValue = Conversion.Hex(Strings.Asc(Data.Substring(0, 1).ToString()));
Data = Data.Substring(1, Data.Length - 1);
sHex = sHex + sValue;
}
return sHex;
}