需要初始化DataAdapter.SelectCommand属性。
问题描述：
DataAdapter.SelectCommand属性需要初始化。
这是什么意思？
The DataAdapter.SelectCommand property needs to be initialized.
What dows this mean?
答
This is because the codes below is initialized with a null object actually.
like this one
SqlDataAdapter yourdataAdapterName = new SqlDataAdapter();
Instead of using that you need to initialize the DataAdapter with a command object like below:
SqlDataAdapter yourdataAdapterName = new SqlDataAdapter("select * from aTable",Conn);
//Conn is your connection string
//use your select command in the place of "select * from aTable"
If it is not your solution then show some code.And ask again