AsterixDisplayAnalyser.FrmReplayToRaw.btnConvert_Click C# (CSharp) Метод

        private void btnConvert_Click(object sender, EventArgs e)
        {
            // File handling Source
            FileStream FileStream = null;
            BinaryReader BinaryReader = null;
            long FilePosition;
            long TotalFileSizeBytes = 0;

            // File Handling Destination
            // File stream
            Stream RecordingStream = null;
            BinaryWriter RecordingBinaryWriter = null;

            // Open up data source file
            try
            {
                //
                TotalFileSizeBytes = new System.IO.FileInfo(this.labelSource.Text).Length;

                // Open file for reading
                FileStream = new System.IO.FileStream(this.labelSource.Text, System.IO.FileMode.Open, System.IO.FileAccess.Read);

                // attach filestream to binary reader
                BinaryReader = new System.IO.BinaryReader(FileStream);

                string Destination_Path = this.labelSource.Text;
                Destination_Path = Destination_Path.Replace(".rply", ".raw");
                RecordingStream = new FileStream(Destination_Path, FileMode.Create);
                RecordingBinaryWriter = new BinaryWriter(RecordingStream);
            }
            catch (Exception e1)
            {
                MessageBox.Show(e1.Message);
            }

            FilePosition = 0;
            // Loop until either until the end of file is reached or user requested to stop
            while (FilePosition < TotalFileSizeBytes)
            {
                try
                {
                    // Lets determine the size of the block
                    int BlockSize = BinaryReader.ReadInt32();
                    // read time since the last data block so file read index moves to the data block
                    int TimeBetweenMessages = BinaryReader.ReadInt32();
                    // Now read the data block as indicated by the size
                    byte[] Data_Block_Buffer = BinaryReader.ReadBytes(BlockSize);
                    RecordingBinaryWriter.Write(Data_Block_Buffer);

                    // Assign file position
                    FilePosition = BinaryReader.BaseStream.Position;
                }
                catch (Exception e2)
                {
                    MessageBox.Show(e2.Message);
                }
            }

            MessageBox.Show("Succefully completed!, File saved in the same directory and name as the source with extension .raw");
        }