How to Efficiently Convert a Hex String to a Byte Array in C#?

C#Sixteen -in -made string to the conversion of byte array

In C#, converting the hexadecimal string into byte array can be implemented to achieve the combination of linq (language integration query) and string operation.

The following is an example code:

This method accepts a hexadecimal string as input and executes the following steps:

<code class="language-csharp">public static byte[] HexStringToByteArray(string hex) {
    return Enumerable.Range(0, hex.Length)
                     .Where(x => x % 2 == 0)
                     .Select(x => Convert.ToByte(hex.Substring(x, 2), 16))
                     .ToArray();
}</code>

It uses to generate the index sequence of characters in the string.

1. It uses to screen the sequence, which only contains the characters that indexes the indexes to ensure that the byte is paired. Enumerable.Range(0, hex.Length)
It uses to select each character for a sub -string, and use
2. to convert it into bytes. Parameters 16 Specify the conversion from the hexadecimal number base. Where(x => x % 2 == 0)
Use to convert the generated byte sequence to array, thereby generating the required byte array.
3. hex.Substring(x, 2) Convert.ToByte(hex.Substring(x, 2), 16) This method uses the powerful function of Linq, and demonstrates a method for effective analysis in C#and converting the hexadecimal string into byte array.

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