How Can I Convert a Byte Array to a Hexadecimal String in C#?

C# Byte Array to Hex String Conversion Techniques

This article explores efficient methods for converting a byte array into its hexadecimal string equivalent in C#.

Method 1: Leveraging BitConverter

The BitConverter class offers a straightforward approach. The following example showcases its usage:

<code class="language-csharp">byte[] byteArray = { 1, 2, 4, 8, 16, 32 };

string hexString = BitConverter.ToString(byteArray);

Console.WriteLine(hexString); // Output: 01-02-04-08-10-20</code>

Notice the hyphens separating the hexadecimal values. To eliminate these, use Replace():

<code class="language-csharp">hexString = BitConverter.ToString(byteArray).Replace("-", "");

Console.WriteLine(hexString); // Output: 010204081020</code>

Method 2: Utilizing Base64 Encoding

An alternative is to employ Base64 encoding. Base64 translates binary data into an ASCII string. This method often yields a more compact result:

<code class="language-csharp">string base64String = Convert.ToBase64String(byteArray);

Console.WriteLine(base64String); // Output: AQIECBAg</code>

Choose the method that best suits your needs; Base64 is generally more space-efficient, while BitConverter provides a direct hexadecimal representation.

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