[Solved] Help me, throwing exception error in decoding code. help needed

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You haven’t said what error you’re getting, but surely your second code should simply be:

return Encoding.UTF8.GetString(Convert.FromBase64String(data));
  • You don’t need to create a new UTF8Encoding
  • You don’t need to worry about decoders explicitly

Additionally, your exception handling is nasty – the stack trace would already show where the error occurs, but by catching it and rethrowing just Exception you’re hiding the original exception type. Just remove the try/catch blocks from both your methods. (And rename them to match .NET naming conventions.)

Basically, your code can look as simple as this:

public static string Base64AndUtf8Encode(string text)
{
    return Convert.ToBase64String(Encoding.UTF8.GetBytes(text));
}

public static string Base64AndUtf8Decode(string base64)
{
    return Encoding.UTF8.GetString(Convert.FromBase64String(base64));
}

Obviously you can split it into separate statements if you want, but it can stil be pretty short:

public static string Base64AndUtf8Encode(string text)
{
    byte[] bytes = Encoding.UTF8.GetBytes(text);
    return Convert.ToBase64String(bytes);
}

public static string Base64AndUtf8Decode(string base64)
{
    bytes[] bytes = Convert.FromBase64String(base64);
    return Encoding.UTF8.GetString(bytes);
}

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solved Help me, throwing exception error in decoding code. help needed