public static string TxtFilter = "文本文件(.txt)|*.txt";public static string PDFFilter = "PDF文件(.pdf)|*pdf";public static string XLSFilter = "Excel文件(.xls)|*.xls";public void ExportGrid(GridControl grid, string ext, string Filter,string title){using (SaveFileDialog saveFileDialog1 = new SaveFileDialog()){saveFileDialog1.FileName = "";saveFileDialog1.Filter = Filter;saveFileDialog1.FileName = title;saveFileDialog1.OverwritePrompt = false; //已存在文件是否覆盖提示if (saveFileDialog1.ShowDialog() != DialogResult.OK)return;//已存在文件是否覆盖提示while (System.IO.File.Exists(saveFileDialog1.FileName) &&DevExpress.XtraEditors.XtraMessageBox.Show("该文件名已存在，是否覆盖？","提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question) != DialogResult.Yes){if (saveFileDialog1.ShowDialog() != DialogResult.OK)return;}if (saveFileDialog1.FileName != ""){try{System.IO.FileStream fs =(System.IO.FileStream)saveFileDialog1.OpenFile();if (ext == "txt"){grid.ExportToText(fs);}else if (ext == "pdf"){grid.ExportToPdf(fs);}else if (ext == "xls"){XlsExportOptions options = new XlsExportOptions();options.TextExportMode = TextExportMode.Text;grid.ExportToXls(fs, options);}//this.gcISSUESUBs.ExportToText(fs);
                        fs.Close();//DevExpress.XtraEditors.XtraMessageBox.Show("数据导出成功！", "提示");
                    }catch (Exception ex){if (ex.Message.Contains("正由另一进程使用")){DevExpress.XtraEditors.XtraMessageBox.Show("数据导出失败！文件正由另一个程序占用！", "提示");}elseDevExpress.XtraEditors.XtraMessageBox.Show("数据导出失败！数据量过大，请分别统计再导出！", "提示");}}}}