Thermo MSで取得した .rawファイルを何とかcsvまでもっていった

全データをstringbuilderを利用して展開した


        async private Task<StringBuilder> RawDecode(string[] fileName)
        {
           MSFileReader_XRawfile rawfile = new MSFileReader_XRawfile();

            rawfile.Open(fileName[0]);
            rawfile.SetCurrentController(0, 1);

            int totalscannum = 0;

            rawfile.GetNumSpectra(ref totalscannum);

            double ProfilePeakWidth = 0.0;
            object MassList = null;
            object PeakFlags = null;
            int ArraySize = 0;

            textBox.Text = ""; //テキストボックスの初期化

            StringBuilder rawcsv = new StringBuilder();

            await Task.Run(() => {
                int a = 1;
            
                do
                {
                    rawfile.GetMassListFromScanNum(ref a, null, 1, 0, 0, 0, ref ProfilePeakWidth, ref MassList, ref PeakFlags, ref ArraySize);
                    double[,] mslist = (double[,])MassList;

                    for (long i = 0; i < mslist.GetLength(1); i++)
                    {
                            rawcsv.Append(a.ToString());
                            rawcsv.Append(",");
                            rawcsv.Append(mslist[0, i].ToString());
                            rawcsv.Append(",");
                            rawcsv.Append(mslist[1, i].ToString("#;#;0"));
                            rawcsv.Append("\r\n");
                            i++;//なんだこれ？
                        }
                       a++;

                    } while (a < totalscannum + 1) ;
                    rawfile.Close();
                
                delegate_WriteLine TextWrite = new delegate_WriteLine(WriteLine);
                this.textBox.Invoke(TextWrite, rawcsv);
            });
            
            progressBar1.Value = 0;
            return rawcsv;
        }

        delegate void delegate_WriteLine(StringBuilder datas);
        private void WriteLine(StringBuilder datas)
        {
            this.textBox.Text = datas.ToString();
        }