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