//导出2007格式

            AppWb.Saved = true;            
            //保存工作薄            
            AppExcel.ActiveWorkbook.SaveCopyAs(FilePath);

//导出2003格式

AppWb.Saved = true;

AppWb.SaveAs(FilePath, 56, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Microsoft.Office.Interop.Excel.XlSaveAsAccessMode.xlExclusive, Missing.Value, Missing.Value, Missing.Value, Missing.Value, Missing.Value);

 

//其中 56 为 2003兼容格式