Excel操作——删除工作表

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研究一阵Excel了,也知道调用_WorkSheet对象的Delete方法就可以删除工作表,但试了很多次都不成功,经过反复试验,发现原来必须先把工作表中的数据清空,才能删除。有人说不用,我想可能是Office版本的差别的,我用Office2003肯定是这样,2007也许就不用了。
       把代码贴出来,方法没有问题。
int CIOExcel::deleteWorkSheetCString strFilePathCString strSheetName )
{
     int nRetVal = 0;
 
     // 打开文件,获取激活的Sheet
     LPDISPATCH lpDisp = NULL;
     COleVariant covOptional((long)DISP_E_PARAMNOTFOUNDVT_ERROR); 
 
     // 打开文件
     lpDisp = m_oWorkBooks.OpenstrFilePath,
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing) );
     // 获得活动的WorkBook( 工作簿)
     m_oWorkBook.AttachDispatchlpDispTRUE );
     // 获得工作表集
     m_oWorkSheets.AttachDispatchm_oWorkBook.GetSheets(), TRUE );
     // 获得指定的工作表
     m_oWorkSheet.AttachDispatchm_oWorkSheets.GetItemCOleVariantstrSheetName ) ), TRUE );
     m_oCurrRange.AttachDispatchm_oWorkSheet.GetUsedRange(), TRUE );
     // 清空数据
     m_oCurrRange.Clear();
     // 先保存一下
     m_oWorkBook.SaveAsCOleVariant(strFilePath),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         0,
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing) );
 
     // 删除工作表
     m_oWorkSheet.Delete();
     // 再先保存一下
     m_oWorkBook.SaveAsCOleVariant(strFilePath),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         0,
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing),
         _variant_t(vtMissing) );
 
     m_oWorkBook.ClosecovOptionalCOleVariant(strFilePath), covOptional );
     m_oWorkBooks.Close();
 
     return 0;
}