导出Excel—外部表不是预期的格式

方法一： http://www.liqiu.info/2011/01/%E5%88%86%E4%BA%AB-net%E5%AF%BC%E5%87%BAexcel/   http://www.google.com.hk/#hl=zh-CN&newwindow=1&safe=strict&q=%E5%AF%BC%E5%87%BA+%E9%9D%9E+html%E7%9A%84+excel+&oq=%E5%AF%BC%E5%87%BA+%E9%9D%9E+html%E7%9A%84+excel+&aq=f&aqi=&aql=&gs_sm=e&gs_upl=104042l112685l10l8l8l0l0l0l1l315l1735l0.3.4.1l8&fp=1&biw=1680&bih=932&cad=b 方法二： 最终是用DataGrid通过Response导出成Excel格式,在页面直接打开，然后让用户另存为正式Excel格式，再导入就可以了 Response出来的就是这个问题，虽然他生成excel很快，但再导入数据库的时候就有毛病，还是用excel.dll控件吧，这个绝对没有问题  public void Out2Excel(string sTableName,string url)  {  Excel.Application oExcel=new Excel.Application();  Workbooks oBooks;  Workbook oBook;  Sheets oSheets;  Worksheet oSheet;  Range oCells;  string sFile= " ",sTemplate= " ";  //  System.Data.DataTable dt=TableOut(sTableName).Tables[0];  sFile=url+ "\\myExcel.xls ";  sTemplate=url+ "\\MyTemplate.xls ";  //  oExcel.Visible=false;  oExcel.DisplayAlerts=false;  //定义一个新的工作簿  oBooks=oExcel.Workbooks;  oBooks.Open(sTemplate,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing,Type.Missing, Type.Missing, Type.Missing);  oBook=oBooks.get_Item(1);  oSheets=oBook.Worksheets;  oSheet=(Worksheet)oSheets.get_Item(1);  //命名该sheet  oSheet.Name= "Sheet1 ";  oCells=oSheet.Cells;  //调用dumpdata过程，将数据导入到Excel中去  DumpData(dt,oCells);  //保存  oSheet.SaveAs(sFile,Excel.XlFileFormat.xlTemplate,Type.Missing,Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange, Type.Missing, Type.Missing, Type.Missing);  oBook.Close(false, Type.Missing,Type.Missing);  //退出Excel，并且释放调用的COM资源  oExcel.Quit();  GC.Collect();  KillProcess( "Excel ");  }  private void KillProcess(string processName)  {  System.Diagnostics.Process myproc= new System.Diagnostics.Process();  //得到所有打开的进程  try  {  foreach (Process thisproc in Process.GetProcessesByName(processName))  {  if(!thisproc.CloseMainWindow())  {  thisproc.Kill();  }  }  }  catch(Exception Exc)  {  throw new Exception( " ",Exc);  }  }