Upload CSV to Google Spreadsheet in a new sheet using C#

Question

I am able to add a new sheet to an already exisiting Google Spreadsheet via the Sheets API using the code below. How do I import from a CSV to this new sheet ?

//Auth code to sheets API above this line
SheetsService sheetsService = new SheetsService(bc_init);
                string spreadsheetID = "XXXXXX";
                string sheetName = DateTime.Now.ToString();

                var addSheetRequest = new AddSheetRequest();
                addSheetRequest.Properties = new SheetProperties();
                addSheetRequest.Properties.Title = sheetName;

                BatchUpdateSpreadsheetRequest batchUpdateSpreadsheetRequest = new BatchUpdateSpreadsheetRequest();
                batchUpdateSpreadsheetRequest.Requests = new List<Request>();
                batchUpdateSpreadsheetRequest.Requests.Add(new Request
                {
                    AddSheet = addSheetRequest

                });
                var batchUpdateRequest = sheetsService.Spreadsheets.BatchUpdate(batchUpdateSpreadsheetRequest, spreadsheetID);
                batchUpdateRequest.Execute();