Filestream Object reference not set to an instance of an object

Question

Ive created this class to handle file io

public class FileStreamManager
{
    public FileStream fileStream;
    public StreamWriter streamWriter;
    public StreamReader streamReader;

    public bool CreateOrAppendFileForOutput(string fileName)
    {
        try
        {

            fileStream = new FileStream(fileName, FileMode.Append, FileAccess.Write);
            streamWriter = new StreamWriter(fileStream);
            return true;
        }
        catch (Exception) { }

        return false;
    }
    public void CloseCreateOrAppendFileForOutput()
    {
        try
        {
            fileStream.Dispose();
            streamWriter.Dispose();
        }
        catch (Exception) { }
    }
}

and im using it in another class like

FileStreamManager fsmExcpLog = new FileStreamManager();
fsmExcpLog.CreateOrAppendFileForOutput(todaysTestDirPath + @"\ExceptionLog.txt");

FileStreamManager fsmOffersLog = new FileStreamManager();
fsmOffersLog.CreateOrAppendFileForOutput(todaysTestDirPath + @"\OffersLog.txt");

FileStreamManager fsmTestedAddLog = new FileStreamManager();
fsmExcpLog.CreateOrAppendFileForOutput(System.AppDomain.CurrentDomain.BaseDirectory + ConfigurationManager.AppSettings["AddressLogFilePath"].Trim());

but when i try to write using this

fsmTestedAddLog.streamWriter.WriteLine("Some Data");

it is giving me Object reference not set to an instance of an object Error. i looked at the abject stream variable while debugging they are null, My question is why are they getting null if i have not called CloseCreateOrAppendFileForOutput() method yet?

Answer 1

I think the references are null because you set them in a try block. Maybe try creating a new object, and setting the files they reference within the try block?