How to Convert Between Byte Arrays and Hexadecimal Strings in C#?

In programming, the conversion between byte array and hexadecimal string is a common task. This article will introduce how to achieve this conversion in C#:

Converted from byte array to hexadecimal string

From the .NET 5, you can use the built -in method to complete this task:

Convert.ToHexString The converted from the hexadecimal string to the byte array

string hexString = Convert.ToHexString(byteArray);

For reverse operation, please use :

<旧> The alternative method of the old version .NET version Convert.FromHexString

byte[] byteArray = Convert.FromHexString(hexString);

or: <或者>

<向> reverse conversion

public static string ByteArrayToString(byte[] ba)
{
  StringBuilder hex = new StringBuilder(ba.Length * 2);
  foreach (byte b in ba)
    hex.AppendFormat("{0:x2}", b);
  return hex.ToString();
}

To convert the hexadecimal string conversion tote array, please use this method:

public static string ByteArrayToString(byte[] ba)
{
  return BitConverter.ToString(ba).Replace("-", "");
}

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