EPPlus：使用LoadFromCollection更快吗？

Question

我目前正在使用EPPlus填充工作表，如下所示：

 List<dynamic> myData = ...
 int col = 1;
 int row = 1;

 foreach (var data in myData) 
 { 
     worksheet.Cells[row, col++].Value = data.field1;
     worksheet.Cells[row, col++].Value = data.field2;
     worksheet.Cells[row, col++].Value = data.field3;
     worksheet.Cells[row, col++].Value = data.field4;
     worksheet.Cells[row, col].Style.Numberformat.Format = "yyyy-MM-dd";
     worksheet.Cells[row, col++].Formula = "=DATE(" + data.field5.ToString("yyyy,MM,dd") + ")";
     worksheet.Cells[row, col++].Value = data.field6;
     worksheet.Cells[row, col++].Value = data.field7;
     worksheet.Cells[row, col++].Value = data.field8;

     row++;
 }

但是有2万行时，速度却没有我想要的快。

问题：对LoadFromCollection做同样的事情应该更快？

  worksheet.Cells["..."].LoadFromCollection(...)