// <summary>

        /// DevExpress通用導出Excel,支持多個控件同時導出在同一個Sheet表

        /// eg:ExportToXlsx("",gridControl1,gridControl2);

        /// 將gridControl1和gridControl2的數據一同導出到同一張工作表

        /// </summary>

        /// <param name="title">文件名</param>

        /// <param name="panels">控件集</param>

        public void ExportToExcel(string title, params IPrintable[] panels)

        {

            SaveFileDialog saveFileDialog = new SaveFileDialog();

            saveFileDialog.FileName = title;

            saveFileDialog.Title = "導出Excel";

            saveFileDialog.Filter = "Excel文件(*.xlsx)|*.xlsx|Excel文件(*.xls)|*.xls";

            DialogResult dialogResult = saveFileDialog.ShowDialog();

            if (dialogResult == DialogResult.Cancel)

                return;

            string FileName = saveFileDialog.FileName;

            PrintingSystem ps = new PrintingSystem();

            CompositeLink link = new CompositeLink(ps);

            ps.Links.Add(link);

            foreach (IPrintable panel in panels)

            {

                link.Links.Add(CreatePrintableLink(panel));

            }

            link.Landscape = true;//橫向           

            //判斷是否有標題，有則設置         

            //link.CreateDocument(); //建立文檔

            try

            {

                int count = 1;

                //在重復名稱后加（序號）

                while (File.Exists(FileName))

                {

                    if (FileName.Contains(")."))

                    {

                        int start = FileName.LastIndexOf("(");

                        int end = FileName.LastIndexOf(").") - FileName.LastIndexOf("(") + 2;

                        FileName = FileName.Replace(FileName.Substring(start, end), string.Format("({0}).", count));

                    }

                    else

                    {

                        FileName = FileName.Replace(".", string.Format("({0}).", count));

                    }

                    count++;

                }

                if (FileName.LastIndexOf(".xlsx") >= FileName.Length - 5)

                {

                    XlsxExportOptions options = new XlsxExportOptions();

                    link.ExportToXlsx(FileName, options);

                }

                else

                {

                    XlsExportOptions options = new XlsExportOptions();

                    link.ExportToXls(FileName, options);

                }

                if (DevExpress.XtraEditors.XtraMessageBox.Show("保存成功，是否打開文件？", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information) == DialogResult.Yes)

                    System.Diagnostics.Process.Start(FileName);//打開指定路徑下的文件

            }

            catch (Exception ex)

            {

                DevExpress.XtraEditors.XtraMessageBox.Show(ex.Message);

            }

        }

        /// <summary>

        /// 創建打印Componet

        /// </summary>

        /// <param name="printable"></param>

        /// <returns></returns>

        PrintableComponentLink CreatePrintableLink(IPrintable printable)

        {

            ChartControl chart = printable as ChartControl;

            if (chart != null)

                chart.OptionsPrint.SizeMode = DevExpress.XtraCharts.Printing.PrintSizeMode.Stretch;

            PrintableComponentLink printableLink = new PrintableComponentLink() { Component = printable };

            return printableLink;

        }

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