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我正在使用 closedxml 将数据表导出到 asp.net 中的 excel 中。如果我导出少于 50k 行但在导出更多行时抛出异常，它工作正常。它有 31 列。我将数据表拆分为 10000 行，然后将数据表添加到单独的工作表中。如果有人帮助我，将不胜感激。下面是代码。

    XLWorkbook wb = new XLWorkbook();

        foreach (DataTable dtdiv in splitdt) //to remove any special characters to avoid format exception(the datatable has xml content)
        {
            foreach (DataRow row in dtdiv.Rows)
            {
                for (int i = 0; i < dtdiv.Columns.Count; i++)
                {
                    if (dtdiv.Columns[i].DataType == typeof(string))
                    {
                        if (row[i] != System.DBNull.Value)
                        {
                            row[i] = ReplaceHexadecimalSymbols((string)row[i]);
                        }
                    }
                }
            }
            string newString = "report_" + k;

            wb.AddWorksheet(dtdiv, newString);
            k++;

        }


        FileStream fs = new FileStream(Server.MapPath("Test.xlsx"), FileMode.Create);
        wb.SaveAs(fs);
        fs.Close();

我也尝试过使用以下

            Response.Clear();
        Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
        Response.AddHeader("content-disposition", "attachment;filename=" + (String)Session["MatrixOutputFileName"]);

        using (MemoryStream memoryStream = new MemoryStream())
        {
            wb.SaveAs(memoryStream);
            memoryStream.WriteTo(Response.OutputStream);
            memoryStream.Close();
        }
        Response.End();
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