C# - File I/O

using System;

namespace ReadCSVFileApplication {
   
   class ReadCSVFile {
	   
		 static void Main(string[] args) {
        {

            try
            {
				List<String> column1 = new ArrayList<String>();
                List<String> column2 = new ArrayList<String>();
				//Add remaining columns if exist
				StreamReader objReader = new StreamReader(@"received.csv");
				String row = objReader.ReadLine();
					if (!string.IsNullOrEmpty(row))
					{
 
						//Execute a loop over the columns.
						String[] arralistOfColumns= row.Split("##");
							column1.add(arralistOfColumns[0]);
							column2.add(arralistOfColumns[1]);
							//Asaign remaining columns if exist
					}

                String inputFile = @"C:\Users\PROJEKTSTATUS_GESAMT_neues_Layout.xlsm";
                Excel.Application oXL = new Excel.Application();

                //Open a Excel File
                Excel.Workbook oWB = oXL.Workbooks.Add(inputFile);
                Excel._Worksheet oSheet = oWB.ActiveSheet;
              

                oSheet.Cells[1, 1] = "FirstColumn Name";
                oSheet.Cells[1, 2] = "SecondColumn Name"; // Here 1 is the rowIndex and 2 is the columnIndex.

                //Enter the Header data in Column A
                int i = 0;
                for (i = 0; i < Name.Count; i++)
                {
                    oSheet.Cells[i + 2, 1] = Name[i];
                }

                //Enter the Percentage data in Column B
                for (i = 0; i < Percentage.Count; i++)
                {
                    oSheet.Cells[i + 2, 2] = Percentage[i];
                }

               
                //String ReportFile = @"D:\Excel\Output.xls";
                oWB.SaveAs(inputFile, Excel.XlFileFormat.xlOpenXMLWorkbookMacroEnabled,
                                        Type.Missing, Type.Missing,
                                        false,
                                        false,
                                        Excel.XlSaveAsAccessMode.xlNoChange,
                                        Type.Missing,
                                        Type.Missing,
                                        Type.Missing,
                                        Type.Missing,
                                        Type.Missing);


                oXL.Quit();

                Marshal.ReleaseComObject(oSheet);
                Marshal.ReleaseComObject(oWB);
                Marshal.ReleaseComObject(oXL);

                oSheet = null;
                oWB = null;
                oXL = null;
                GC.GetTotalMemory(false);
                GC.Collect();
                GC.WaitForPendingFinalizers();
                GC.Collect();
                GC.GetTotalMemory(true);
            }
            catch (Exception ex)
            {
				String errorMessage = "Error reading the Excel file : " + ex.Message;
			}

        }
   }
}