我正在尝试使用OpenXML从ASP.NET Web服务器编写Excel文件。我有大约2100条记录,这需要大约20-30秒的时间。有没有办法让它更快?从数据库中检索2100行只需要一小部分时间。不确定为什么在内存中操作它们需要更长的时间。
注意:ExcelWriter是我们的自定义类,但是它的所有方法都直接来自此链接中的代码:http://msdn.microsoft.com/en-us/library/cc861607.aspx
注意:ExcelWriter是我们的自定义类,但是它的所有方法都直接来自此链接中的代码:http://msdn.microsoft.com/en-us/library/cc861607.aspx
public static MemoryStream CreateThingReport(List<Thing> things, MemoryStream template)
{
SpreadsheetDocument spreadsheet = SpreadsheetDocument.Open(template, true);
WorksheetPart workSheetPart = spreadsheet.WorkbookPart.WorksheetParts.First();
SharedStringTablePart sharedStringPart = spreadsheet.WorkbookPart.GetPartsOfType<SharedStringTablePart>().First();
Cell cell = null;
int index = 0;
//create cell formatting for header text
Alignment wrappedAlignment = new Alignment { WrapText = true };
uint rowOffset = 2;
foreach (Thing t in things)
{
//Received Date
cell = ExcelWriter.InsertCellIntoWorksheet("A", rowOffset, workSheetPart);
index = ExcelWriter.InsertSharedStringItem(t.CreateDate.ToShortDateString(), sharedStringPart);
cell.CellValue = new CellValue(index.ToString());
cell.DataType = new DocumentFormat.OpenXml.EnumValue<CellValues>(CellValues.SharedString);
//Car Part Name
cell = ExcelWriter.InsertCellIntoWorksheet("B", rowOffset, workSheetPart);
index = ExcelWriter.InsertSharedStringItem(t.CarPart.Name, sharedStringPart);
cell.CellValue = new CellValue(index.ToString());
cell.DataType = new DocumentFormat.OpenXml.EnumValue<CellValues>(CellValues.SharedString);
rowOffset++;
}
workSheetPart.Worksheet.Save();
spreadsheet.WorkbookPart.Workbook.Save();
spreadsheet.Close();
return template;