How Can I Get the Raw Byte Representation of a C# String Without Specifying Encoding?

Get the original byte representation of the string in C# (no specified encoding)

When processing the string in C#, understanding that the character coding is very important for its influence on its bytes. However, if the goal is only to obtain the original byte without any explanation, there is an alternative method to avoid explicitly specified codes.

In contrast to the traditional suggestion, if the byte is not required, you can obtain the byte representation of the string in C# without designated codes. This method simplifies the process and ensures the consistency of byte representation.

For this reason, you can use

, as shown below: System.Buffer.BlockCopy

<code class="language-csharp">static byte[] GetBytes(string str)
{
    byte[] bytes = new byte[str.Length * sizeof(char)];
    System.Buffer.BlockCopy(str.ToCharArray(), 0, bytes, 0, bytes.Length);
    return bytes;
}</code>

This function returns a byte array that accurately represents bytes used to store string on the system. To retrieve the original string from the byte, you can use the following functions:

<code class="language-csharp">// 请勿对任意字节使用此函数；仅对相同系统上的 GetBytes 输出使用
static string GetString(byte[] bytes)
{
    char[] chars = new char[bytes.Length / sizeof(char)];
    System.Buffer.BlockCopy(bytes, 0, chars, 0, bytes.Length);
    return new string(chars);
}</code>

This method is better than the use of specific codes, because:

It ensures consistent bytes, without worrying about character coding schemes.
It allows processing invalid characters without problems in coding/decoding.

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