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HomeBackend DevelopmentC++How to Correctly Convert a UTF-8 String to ISO-8859-1 in C#?

How to Correctly Convert a UTF-8 String to ISO-8859-1 in C#?

Correctly Converting UTF-8 Strings to ISO-8859-1 in C#

Directly converting a UTF-8 string to ISO-8859-1 can lead to data loss or incorrect results. The key is to correctly handle the byte array representation of the string. A common mistake is to incorrectly decode the UTF-8 bytes using the ISO-8859-1 encoding.

The solution involves a two-step process: first converting the UTF-8 byte array to an ISO-8859-1 byte array, then decoding that byte array using the ISO-8859-1 encoding. This avoids misinterpreting the bytes.

Here's the corrected C# code:

Encoding iso = Encoding.GetEncoding("ISO-8859-1");
Encoding utf8 = Encoding.UTF8;
byte[] utfBytes = utf8.GetBytes(Message);
byte[] isoBytes = Encoding.Convert(utf8, iso, utfBytes);
string msg = iso.GetString(isoBytes);

This approach uses Encoding.Convert to perform a proper byte-by-byte conversion, ensuring that the resulting string accurately reflects the original data within the limitations of the ISO-8859-1 encoding (which only supports a subset of characters present in UTF-8). Remember that characters not representable in ISO-8859-1 will be lost or replaced during this conversion.

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