PB data window to the often exported to excel, and built

代码说明：

PB的数据窗口中的内容经常要导出为excel,自带的函数效果总是不好,可以试试这个,表头也可导出.-PB data window to the often exported to excel, and built-in function is undesirable results, you can try this, the first table can be derived.