Hi friends can any one help me. How to read the xlsx/csv file from AWS S3 bucket to C# windows forms gridview. Below my code is

private void btnUpload_Click(object sender, EventArgs e)
        {
            try
            {
                string bucketName = string.Empty, fileName = string.Empty;//, 
                accessKey = string.Empty, SecretKey = string.Empty;
                this.Cursor = Cursors.WaitCursor;
                bucketName = "ben-s3lambdaevent"; //"ben-hrms";
                fileName = string.Format("{0}", this.SoftCopyFileName);

                //AmazonS3 s3Obj = new AmazonS3();
                string msg = UploadFile(bucketName, openFileDialog1.FileName, fileName);

                if (msg.ToUpper() == SUCCESS_MSG)
                {
                    btnBrowse.Enabled = false;
                }
                DataTable table = new DataTable();
                
                Amazon.RegionEndpoint region = Amazon.RegionEndpoint.APSouth1;
                table = GetS3SelectDetails(accessKey, SecretKey, bucketName, fileName, region);
                dgvGrid.DataSource = table;
                this.Cursor = Cursors.Default;
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, TECHNO_MSG);
                //if (access == null) access = new BusinessConnector();
                //access.DBConnector.ErrorLogInsert(ex.Message, "frmServiceInvoice.cs.btnBrowse_Click()");
            }
        }

        public DataTable GetS3SelectDetails(string accessKey, string SecretKey, string bucketName, string fileName, Amazon.RegionEndpoint region)
        {
            DataTable dt = (DataTable)GetAmazonS3Select(accessKey, SecretKey, bucketName, fileName, region).Result;

            return dt;
        }

        public async Task<datatable> GetAmazonS3Select(string accessKey, string SecretKey, string bucketName, string fileName, Amazon.RegionEndpoint region)
        {
            DataTable table = new DataTable();
            using (var eventStream = await GetSelectObjectContentEventStream(accessKey, SecretKey, bucketName, fileName, region))
            {
                var recordResults = eventStream
                .Where(ev => ev is RecordsEvent)
                .Cast<recordsevent>()
                .Select(records =>
                {
                    using (var reader = new StreamReader(records.Payload, Encoding.UTF8))
                    {
                        return reader.ReadToEnd();
                    }
                }).ToArray();

                string[] fileData = recordResults[0].ToString().Split('\n');

                for (int i = 0; i < fileData.Length; i++)
                {
                    string[] rowData = fileData[i].ToString().Split(';');

                    if (i == 0)
                    {
                        for (int j = 0; j < rowData.Length; j++)
                        {
                            table.Columns.Add(rowData[j].ToString(), typeof(string));
                        }
                    }
                    else
                    {
                        DataRow row = table.NewRow();
                        for (int j = 0; j < rowData.Length; j++)
                        {
                            row[j] = rowData[j].ToString();
                        }
                        table.Rows.Add(row);
                    }
                }
            }
            return table;
        }

        public async Task<iselectobjectcontenteventstream> GetSelectObjectContentEventStream(string accessKey, string SecretKey, string bucketName, string fileName, Amazon.RegionEndpoint region)
        {
            SelectObjectContentResponse response1 = null;
            try
            {
                IAmazonS3 client1 = new AmazonS3Client(accessKey, SecretKey, region);

                SelectObjectContentRequest request = new SelectObjectContentRequest();
                request.Bucket = bucketName;
                request.Key = fileName;
                request.ExpressionType = Amazon.S3.ExpressionType.SQL;
                request.Expression = "select * from S3Object";

                request.InputSerialization = new InputSerialization()
                {
                    CSV = new CSVInput()
                    {
                        FileHeaderInfo = FileHeaderInfo.Use
                        //FieldDelimiter = ";",
                    }
                };

                request.OutputSerialization = new OutputSerialization()
                {
                    CSV = new CSVOutput()
                    {
                        //QuoteFields = QuoteFields.Always
                        FieldDelimiter = ";"
                    }
                };
   ------------  response1 = await client1.SelectObjectContentAsync(request);
            }
            catch (Exception ex)
            {

            }
            return response1.Payload;
        }