说明：  直接通过ODB C读写Excel表格文件部分原码C读直接通过ODBC读写Excel表格文件部分原码写Excel表格文件部分原码
(directly through ODBC read and write Excel document forms part of the original C code directly through Reading ODBC read and write Excel document forms part of the original code to write Excel document forms part of the original code)