public void EditData()
        {
            try
            {
                if (dataGridMaster.RowCount > 0)
                {
                    int    index = dataGridMaster.SelectedCells[0].RowIndex;
                    string code  = (string)dataGridMaster["Code", index].Value;

                    var queryData = MasterProcessor.FindDataByCode(code, MasterProcessor.loadCsvFileEmployee(MasterProcessor.pathEmployee));
                    using (fmInputMaster f = new fmInputMaster())
                    {
                        f.txtCode.Enabled = false;
                        f.txtCode.Text    = queryData.Code;
                        f.txtName.Text    = queryData.EmployeeName;
                        f.txtAge.Text     = queryData.Age;
                        f.lblFlag.Text    = "edit";
                        f.ShowDialog();
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message.ToString());
            }
        }
        private void BtnAdd_Click(object sender, EventArgs e)
        {
            fmInputMaster f = new fmInputMaster();

            f.lblFlag.Text = "new";
            f.ShowDialog();
        }