从DataTable将数据插入Excel工作表

Question

我正在将数据从数据库中提取出来DataTable并通过将其绑定到Repeater控件来显示它.现在我需要将相同的数据复制到excel电子表格中.如何使用相同的方法DataTable来填充电子表格.请建议.

Answer 1

我建议创建一个真正的excel文件而不是html表(许多人都这样做).因此我可以热烈推荐EPPlus(LGPL许可证).

然后很简单.假设你有一个按钮BtnExportExcel:

protected void BtnExcelExport_Click(object sender, System.Web.UI.ImageClickEventArgs e)
{
    try {
        var pck = new OfficeOpenXml.ExcelPackage();
        var ws = pck.Workbook.Worksheets.Add("Name of the Worksheet");
        // get your DataTable
        var tbl = GetDataTable();
        ws.Cells["A1"].LoadFromDataTable(tbl, true, OfficeOpenXml.Table.TableStyles.Medium6);
        foreach (DataColumn col in tbl.Columns) {
            if (col.DataType == typeof(System.DateTime)) {
                var colNumber = col.Ordinal + 1;
                var range = ws.Cells[1, colNumber, tbl.Rows.Count, colNumber];
                // apply the correct date format, here for germany
                range.Style.Numberformat.Format = "dd.MM.yyyy";
            }
        }
        var dataRange = ws.Cells[ws.Dimension.Address.ToString()];
        dataRange.AutoFitColumns();

        Response.Clear();
        Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        Response.AddHeader("content-disposition", "attachment;  filename=NameOfExcelFile.xlsx");
        Response.BinaryWrite(pck.GetAsByteArray());
    } catch (Exception ex) {
        // log exception
        throw;
    } 
    Response.End();
}