TsRemux.TsRemux.OpenFile C# (CSharp) Method

        private void OpenFile(string filename)
        {
            if (null != inFile)
            {
                inFile.CloseFile();
                inFile = null;
            }
            if (null != supFile)
            {
                supFile.CloseFile();
                supFile = null;
            }
            inFile = PesFile.OpenFile(filename, cbxUseAsyncIO.Checked, backgroundWorker2);
        }