C#/ Export to CSV파일로 추출하기

        #region Export to CSV
        private void saveFileDialog1_FileOk(object sender, CancelEventArgs e)
        {
            //Build the CSV file data as a Comma separated string.
            string csv = string.Empty;

            //Add the Header row for CSV file.
            foreach (DataGridViewColumn column in dtgrdWorkingHoursList.Columns)
            {
                csv += column.HeaderText + ',';
            }

            //Add new line.
            csv += "\r\n";

            //Adding the Rows
            foreach (DataGridViewRow row in dtgrdWorkingHoursList.Rows)
            {
                foreach (DataGridViewCell cell in row.Cells)
                {
                    //Add the Data rows.
                    csv += cell.Value.ToString().Replace(",", ";") + ',';
                }

                //Add new line.
                csv += "\r\n";
            }

            //Exporting to CSV.
            //  string targetPath = "D:\\";
            string fileName = "SalesReport_" + DateTime.Now.ToString("yyyy-MM-dd_hh-mm-ss") + ".csv";
            string targetPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            string destFile = System.IO.Path.Combine(targetPath, fileName);

            // To copy a folder's contents to a new location: 
            // Create a new target folder, if necessary. 
            if (!System.IO.Directory.Exists(targetPath))
            {
                System.IO.Directory.CreateDirectory(targetPath);

            }

            // Get file name.
            string name = saveFileDialog1.FileName;
            System.IO.File.WriteAllText(name, csv);
        }

        private void btnExport_Click(object sender, EventArgs e)
        {
            try
            {
                //Exporting to xls.     
                saveFileDialog1.FileName = "WorkedHours_" + UserInfo.usernamWK + "_" + DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss") + ".csv";
                saveFileDialog1.ShowDialog();
            }
            catch
            {

            }
        }
        #endregion