使用POI

时间:2016-07-26 09:02:57

标签: c# excel npoi xlsm

我在我的c#代码中使用POI几周了,我发现并发现我无法解决:Xlsm。

我打开xlsm模板,编辑并保存。该模板包含宏,但我只是将数据添加到xlsm文件中。 实际上,我认为Read和Edit正在寻找(感谢vs中的调试),问题是当我尝试写... 代码正常,没有错误,但是当我尝试用Excel打开它时,它会崩溃..

FileStream temp = new FileStream(xlsm_file, FileMode.Open, FileAccess.ReadWrite);
XSSFWorkbook workbook = (XSSFWorkbook)WorkbookFactory.Create(temp);
XSSFSheet sheet = (XSSFSheet)workbook.GetSheetAt(0);
workbook.SetSheetName(0, sheetname.Substring(0, Math.Min(sheetname.Length, 30)));
temp.Close();
FileStream toWrite = new FileStream(xlsm_file, FileMode.Open, FileAccess.ReadWrite);
workbook.Write(toWrite);
toWrite.Close(); 
例如,即便这样崩溃..

有人有想法吗? 谢谢!

1 个答案:

答案 0 :(得分:1)

您需要以适当的格式编写宏嵌入文件,例如我读取.xltm文件并使用其MIME类型.xltm进行写入。见下面的功能

     public ActionResult DownloadXLTMFile()
            {
                try
                {
                  //Get your macro enabled file after manipulation
                   MemoryStream excelMS =  .....
                   //Using Resposne Stream to Make File Available for User to Download;
                    Response.Clear();

                    Response.ContentType = "application/vnd.ms-excel.template.macroEnabled.12";
                    Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}",  "YourFileName.xltm"));

                    Response.BinaryWrite(excelMS.ToArray());
                    Response.End();
                }
                catch (Exception Ex)
                {  }
                finally
                {}
                return View();
            }

您可以找到合适的MIME类型here