In C#, What Is The Process Of Converting A Byte Array To A Hexadecimal String And Vice Versa?

To convert a byte array to a hexadecimal string in C#, you can use the BitConverter.ToString method.

Here’s an example:

byte[] byteArray = { 0x12, 0xAB, 0x45, 0xFF };
string hexString = BitConverter.ToString(byteArray).Replace("-", "");
Console.WriteLine(hexString);

The BitConverter.ToString method converts each byte in the array to a two-character hexadecimal representation, separated by a hyphen. The .Replace("-", "") call removes the hyphens to get a continuous string. The output of the above code will be 12AB45FF.

To convert a hexadecimal string back to a byte array, you can use the BitConverter.GetBytes method along with StringBuilder and Byte.Parse to convert each pair of characters in the string to a byte value.

Here’s an example:

string hexString = "12AB45FF";
byte[] byteArray = new byte[hexString.Length / 2];
for (int i = 0; i < hexString.Length; i += 2)
{
    byteArray[i / 2] = byte.Parse(hexString.Substring(i, 2), System.Globalization.NumberStyles.HexNumber);
}

// Printing each byte value
foreach (byte b in byteArray)
{
    Console.WriteLine(b);
}

This code will print each byte value in the byte array, which will be 18, 171, 69, 255.

About the Author Rex

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