1.创建类的时候取好名字，改名字后，不能更改类的名字如detaset1,以后想要用HumanResourse，虽然该了名字，但是还是只能这么用.
//You can change the name by use the name propertty . the XSD name does affect he DataSet class name . so you must change the DataSet class name .
2.如何引用。 比如创建了HR DataSet类，引用的时候，就用
using HRTableAdapters
因为表多，HR里面可以有很多个TableAdapter。所以就应该这么用
How to create HRTableAdapter object:
just use HRTableAdapters .TableAdptersName_create TNC=new HRTableAdapters .TableAdptersName_create().
how to use DataTable?
HrName_DataTable Hdt= TNC.GetData();
3. How to see the definition function code .
I don't have any other good ways to access the definition, just use "Go To definition" in the vs code tools.