ASP.NET导出Excel文件

            protected
            void btnSaveExcel_Click(object sender, EventArgs e)
        { 
            string FileName = "xxx";
            System.IO.StringWriter objSW = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter objHTW = new System.Web.UI.HtmlTextWriter(objSW);
            try
            {
                //設定格式                Response.Clear();
                Response.Buffer = true;
                Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", FileName));
                Response.ContentType = "application/ms-excel";// "application/vnd.ms-excel";
                Response.Charset = "UTF-8";
                this.EnableViewState = false;                this.GridViewData.RenderControl(objHTW);
                Response.Write(objSW.ToString());
                Response.End();
            }
            catch (Exception ex)
            {
                string aa = ex.Message.ToString();
            }
            finally
            {
                objSW.Close();
                objSW = null;
                objHTW.Close();
                objHTW = null;
            }
        }
///必须重载VerifyRenderingInServerForm, 不然会报错publicoverridevoid VerifyRenderingInServerForm(Control control)
        {
            //base.VerifyRenderingInServerForm(control);
        }

            private
            void
             Output(DataTable dt)
        {
            org.in2bits.MyXls.XlsDocument doc = new org.in2bits.MyXls.XlsDocument();
            doc.FileName = DateTime.Now.ToString().Replace("-", "").Replace(":", "").Replace("", "") + ".xls";//excel文件名称
            org.in2bits.MyXls.Worksheet sheet = doc.Workbook.Worksheets.AddNamed("sheet1");//Excel工作表名称
            org.in2bits.MyXls.Cells cells = sheet.Cells;
            int colnum = dt.Columns.Count;//获取DataTable列数for (int i = 0; i < colnum; i++)
            {
                cells.Add(1, (i + 1), dt.Columns[i].Caption.ToString());//导出DataTable列名            }
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                for (int j = 0; j < colnum; j++)
                {
                    cells.Add((i + 2), (j + 1), dt.Rows[i][j].ToString());
                }
            }
            //doc.Save(@"D:\");  //保存到指定位置
            doc.Send();//把写好的excel文件输出到客户端
        }

XlsDocument xls = new XlsDocument();//新建一个xls文档 
xls.FileName = "MyXlsDemo.xls";//设定Excel文件名 
xls.SummaryInformation.Author = "Terry Li"; //填加Excel文件作者信息 
xls.SummaryInformation.Subject = "MyXls Demo";//填加文件主题信息 
xls.DocumentSummaryInformation.Company = "in2bits.org";//填加文件公司信息 string sheetName = "第一个Sheet Demo";#regionstring sheetName = "第一个Sheet Demo"; 
Worksheet sheet = xls.Workbook.Worksheets.Add(sheetName);//填加名为"第一个Sheet Demo"的sheet页 
Cells cells = sheet.Cells;//Cells实例是sheet页中单元格(cell)集合 
//单元格1-base 
Cell cell = cells.Add(2, 3, "三");//设定第2行，第3例单元格的值 
cell.HorizontalAlignment = HorizontalAlignments.Centered;//设定文字居中 
cell.Font.FontName = "行楷";//设定字体 
cell.Font.Height = 30 * 20;//设定字大小（字体大小是以 1/20 point 为单位的） 
cell.UseBorder = true;//使用边框 
cell.BottomLineStyle = 2;//设定边框底线为粗线 
cell.BottomLineColor = Colors.Red;//设定颜色为红色 
cell.RightLineStyle = 2; 
cell.RightLineColor = Colors.Red; 
 
 

//cell的格式还可以定义在一个xf对象中 
XF cellXF = xls.NewXF();//为xls生成一个XF实例（XF是cell格式对象） 
cellXF.HorizontalAlignment = HorizontalAlignments.Centered;//设定文字居中 
cellXF.Font.FontName = "隶书";//设定字体 
cellXF.Font.Height = 30 * 20;//设定字大小（字体大小是以 1/20 point 为单位的） 
cellXF.UseBorder = true;//使用边框 
cellXF.BottomLineStyle = 2;//设定边框底线为粗线 
cellXF.BottomLineColor = Colors.Green;//设定颜色为绿色 
cellXF.LeftLineStyle = 2; //设定边框左线为粗线 
cellXF.LeftLineColor = Colors.Green; 

cell = cells.Add(3, 3, "国", cellXF);//以设定好的格式填加cell 
cellXF.Font.FontName = "仿宋_GB2312"; 
cellXF.BottomLineStyle = 2; //设定边框底线为粗线 
cellXF.BottomLineColor = Colors.Blue;//设定颜色为蓝色 
cellXF.RightLineStyle = 2;//设定边框右线为粗线 
cellXF.RightLineColor = Colors.Blue;//设定颜色为蓝色 
cellXF.LeftLineStyle = 0; 
cell = cells.Add(4, 3, "志", cellXF);//格式可以多次使用 

//ColumnInfo colInfo = new ColumnInfo(xls, sheet);//生成列格式对象 ////设定colInfo格式的起作用的列为第2列到第5列(列格式为0-base) //colInfo.ColumnIndexStart = 1;//起始列为第二列 
//colInfo.ColumnIndexEnd = 5;//终止列为第六列 
//colInfo.Width = 15 * 256;//列的宽度计量单位为 1/256 字符宽 
//sheet.AddColumnInfo(colInfo);//把格式附加到sheet页上（注：AddColumnInfo方法有点小问题，不给把colInfo对象多次附给sheet页） 
//colInfo.ColumnIndexEnd = 6;//可以更改列对象的值 
//ColumnInfo colInfo2 = new ColumnInfo(xls, sheet);//通过新生成一个列格式对象，才到能设定其它列宽度 
//colInfo2.ColumnIndexStart = 7; 
//colInfo2.ColumnIndexEnd = 8; 
//colInfo2.Width = 20 * 256; 
//sheet.AddColumnInfo(colInfo2); 
MergeArea meaA = new MergeArea(2, 3, 5, 7);//一个合并单元格实例(合并第2行、第5列 到 第3行、第7例) 
sheet.AddMergeArea(meaA);//填加合并单元格 
cellXF.VerticalAlignment = VerticalAlignments.Centered; 
cellXF.Font.FontName = "隶书"; 
//cellXF.Font.Height = 48 * 20; 
//cellXF.Font.Bold = true; 
cellXF.Pattern = 1;//设定单元格填充风格。如果设定为0，则是纯色填充(无色)，1代表没有间隙的实色 
cellXF.PatternBackgroundColor = Colors.Red;//填充的底色 
cellXF.PatternColor = Colors.Green;//设定填充线条的颜色 
cell = cells.Add(2, 5, "晋/陈寿", cellXF); 
#endregion

sheet.Cells.Merge(7, 9, 1, 4); 
cell = cells.Add(7, 1, "MyXls 合并单元格 Demo"); 
cell.HorizontalAlignment = HorizontalAlignments.Centered; 
cell.VerticalAlignment = VerticalAlignments.Centered; 

for (int sheetNumber = 1; sheetNumber <= 4; sheetNumber++) 
{ 
    sheetName = "Sheet " + sheetNumber; 
    int rowMin = sheetNumber; 
    int rowCount = sheetNumber + 10; 
    int colMin = sheetNumber; 
    int colCount = sheetNumber + 10; 
    sheet = xls.Workbook.Worksheets.Add(sheetName); 
    cells = sheet.Cells; 
    for (int r = 0; r < rowCount; r++) 
    { 
        if (r == 0) 
        { 
            for (int c = 0; c < colCount; c++) 
            { 
                cells.Add(rowMin + r, colMin + c, "Column" + (c + 1)).Font.Bold = true; 
            } 
        } 
        else 
        { 
            for (int c = 0; c < colCount; c++) 
            { 
                int val = r + c; 
                cell = cells.Add(rowMin + r, colMin + c, val+ ":51CTO五岁了!"); 
                if (val % 2 != 0) 
                { 
                    cell.HorizontalAlignment = HorizontalAlignments.Centered; 
                    cell.Font.FontName = "Times New Roman"; 
                    cell.Font.Underline = UnderlineTypes.Double; 
                    cell.Font.ColorIndex = 2; 
                    cell.Rotation = 45; //字符倾斜45度                 } 
            } 
        } 
    } 
} 

xls.Send();//XlsDocument.SendMethods.Inline