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

C# medium -byte array array and hexadecimal strings are transformed.

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

<code class="language-csharp">string hexString = Convert.ToHexString(byteArray);</code>

For reverse operation, please use :

The alternative method of the old version .NET version Convert.FromHexString

<code class="language-csharp">byte[] byteArray = Convert.FromHexString(hexString);</code>

If you are using the old version .NET, you can use the following methods:

or:

reverse conversion

<code class="language-csharp">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();
}</code>

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

<code class="language-csharp">public static string ByteArrayToString(byte[] ba)
{
  return BitConverter.ToString(ba).Replace("-", "");
}</code>

Optimize

In order to improve performance, you can consider using alternatives to avoid string -based conversion. However, for most scenarios, the method introduced here should be sufficient.

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