How Can I Convert Hexadecimal Strings to Byte Arrays in C# Using Built-In Functions?

Efficiently Converting Hex Strings to Byte Arrays in C#

Many programming tasks involve transforming hexadecimal strings into byte arrays. C# offers built-in methods to streamline this process.

The StringToByteArray() function below uses LINQ for a concise and efficient conversion. It processes the hex string, selecting only the hexadecimal byte values (located at even indices), and converting them to bytes using Convert.ToByte() with a base-16 (hexadecimal) radix. The output is a byte array representing the input hexadecimal string.

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