namespace dxhbskymDemo{    public partial class ExcelForm : DevExpress.XtraEditors.XtraForm    {       public ExcelForm()        {            InitializeComponent();        }       #region 导出Excel               //导出按钮        private void sbtnDaochu_Click(object sender, EventArgs e)        {            string fileName = "";//要保存的excel文件名            SaveFileDialog sfd = new SaveFileDialog();            sfd.Filter = "导出Excel(*.xls)|*.xls";//扩展名            sfd.FileName = "河北省项目汇总表";//            if (sfd.ShowDialog() == DialogResult.OK)            {                fileName = sfd.FileName;                //导入                outPutExcel(fileName);            }        }        

    //导出Excel的方法        private void outPutExcel(string saveFilepath)        {            bool isShowExcel = false;            DataTable dt = new DataTable();//将数据库取出的数据源转成DataTable                       if (dt == null)            {                return;            }            if (dt.Rows.Count == 0)            {                return;            }            Missing miss = Missing.Value;            Excel.Application xlApp = new Excel.Application();                        if (xlApp == null)            {                XtraMessageBox.Show("请确保您的电脑已经安装Excel！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);                return;            }            //xlApp.UserControl = true;            Excel.Workbooks workBooks = xlApp.Workbooks;            //Excel.Workbook workBook = workBooks.Add(Excel.XlWBATemplate.xlWBATWorksheet);//创建新的            Excel.Workbook workBook = workBooks.Add(System.AppDomain.CurrentDomain.BaseDirectory + "excel\\项目汇总表.xls");//根据现有excel模板产生新的Workbook            Excel.Worksheet workSheet = (Excel.Worksheet)workBook.Worksheets[1];//获取sheet1            if (workSheet == null)            {                XtraMessageBox.Show("请确保您的电脑已经安装Excel！", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);                return;            }            try            {                Excel.Range range=null;                xlApp.Visible = isShowExcel;//若是true,则在导出的时候会显示excel界面                int totalCount = dt.Rows.Count;                workSheet.Cells[1, 1] = "河北省石家庄市项目汇总表";//导出标题                //写入数值                for (int i = 0; i < dt.Rows.Count; i++)                {                    workSheet.Cells[i + 4, 1] = dt.Rows[i]["xmxh"];//项目序号                    //workSheet.Cells[5,1]=””;//表示第五行与第一列交点的那个单元格坐标                    

                    workSheet.Cells[i + 4, 2] = dt.Rows[i]["xmmc"];//项目名称                 ((Excel.Range)workSheet.Cells[i+4, 2]).ColumnWidth = 12;//设置列宽

                                        workSheet.Cells[i + 4, 3] = dt.Rows[i]["bz"];//备注                                    }                               workSheet.SaveAs(saveFilepath, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);                workBooks.Close();            }            catch (Exception ex)            {                XtraMessageBox.Show("Excel导出失败，错误：" + ex.Message, "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Information);                xlApp.Quit();                regExpre.KillExcelProcess();            }            finally            {                xlApp.Quit();                regExpre.KillExcelProcess();            }        }        #endregion    }}