From UTF8 sting to byte array and vice versa

Hello

I have a byte array (first_arr) I changed it to UTF8 string like this

Code:

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string utf_str = Encoding.UTF8.GetString(first_arr);

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Then I re-transferred it to byte array like this

Code:

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byte [] second_arr = Encoding.UTF8.GetBytes(utf_str);

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But the resulted array (second_arr) is different from the native one (first_arr) Why does that happen?

Probably the first array was of a different encoding, try using ASCII or Default