private void Btn_toExcel_Click(object sender, EventArgs e)
        {
            string pathsave = "";

            try
            {
                System.Windows.Forms.SaveFileDialog saveFileDialog = new SaveFileDialog();

                saveFileDialog.Title      = "Browse Excel Files";
                saveFileDialog.DefaultExt = "Excel";
                saveFileDialog.Filter     = "Excel files (*.xls)|*.xls";

                saveFileDialog.CheckPathExists = true;

                if (saveFileDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK)
                {
                    pathsave = saveFileDialog.FileName.Split('.')[0];

                    saveFileDialog.RestoreDirectory = true;
                    ToolSupport tool = new ToolSupport();
                    tool.dtgvExport2Excel(dtgv_show, pathsave + "-" + DateTime.Now.ToString("yyyyMMdd HHmmss") + ".xls");
                }
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.Message);
            }
        }
        private void Btn_toExcel_Click(object sender, EventArgs e)
        {
            ToolSupport tool = new ToolSupport();

            tool.dtgvExport2Excel(dgv_show, PathFoler + DateTime.Now.ToString("yyyyMMdd HHmmss") + ".xls");
        }