C#

class MyException : System.ApplicationException
{
    private int _errorCode;
    private string _errorDescription;

    public MyException (int errorCode, string errorMessage)
        : base (errorMessage)
    {
        _errorCode = errorCode;
        _errorDescription = errorMessage;

        // If you want to retive the message, just use
        Debug.WriteLine(base.Message);
        // There is no need to store the message in this
        // class as well as in the base.
    }
}

George_George wrote:

If I do not call base (errorMessage) in constructor, will there be any issues?

V. wrote:

You have to know the encoding

Guffa wrote:

Where do you get the byte array from in the first place?

void ReadFile(string filePath, long length)
{
    string text;
    using (FileStream fsReader = new FileStream(filePath, FileMode.Open, FileAccess.Read)
    {
        byte[] byteArray = new byte[length];
        fsRead.Read(byteArray, 0, length);
    }

    // Code to convert byteArray to text...
    RTB.Text = text;
}

Guffa wrote:

Why is it that you don't know how the text was encoded?

Guffa wrote:

There is no simple way that can handle any encoding.

Pedram Behroozi wrote:

fsRead.Read(byteArray, 0, length);

Pedram Behroozi wrote:

Are non-text files (*.exe, *.mp3, *.avi, ...) have any encoding?

Pedram Behroozi wrote:

It seems I should use that article[^] to get the file encoding

Guffa wrote:

To determine the encoding you should start by looking for a BOM (byte order mark) at the beginning of the file. If there is one, it's a unicode file, and you can determine the encoding from the BOM. Otherwise it's either an ASCII or ANSI file. You should look for bytes with a value above 127 to determine what special characters are used and try to guess the encoding from which characters you expect there to be. If there are no codes above 127 you can use the ASCII encoding to decode the file.