将数据插入Excel工作表从数据表 [英] Inserting data into an excel sheet from a DataTable

问题描述

我从数据库中提取数据到一个数据表并通过其绑定到转发控件显示它。现在，我需要将相同的数据复制到Excel US preadsheet。我如何可以使用相同的数据表来填充在S preadsheet。请建议。

I'm extracting data from the database into a DataTable and displaying it by binding it to a Repeater control. Now I need to copy the same data into an excel spreadsheet. How can i use the same DataTable to the fill the spreadsheet. Please suggest.

推荐答案

我建议建立一个真正的Excel文件，而不是HTML表格（许多人一样）。为此我诚心诚意推荐 EPPlus （< A HREF =HTTP：//epplus.$c$cplex.com/license相对=nofollow> LGPL许可）

I would suggest to create a real excel-file instead of a html table(what many people do). Therefor i can warmly recommend EPPlus(LGPL license).

然后，它是简单的。假设你有一个按钮 BtnExportExcel ：

Then it is simple. Assuming that you have a button 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();
}

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