从数据库中读取一个表的纪录，我都是这么写的：
dim ds as new dataset
dim sql as string="select * from student"
dim strconn as string="server=(local); database=databasename; User ID=sa; Password=;"

dim adp as new sqldataadapter(sql,strconn)
adp.fill(ds,"student")


但是我看了很多别人写代码是这样的：
dim ds as new dataset
dim sql as string="select * from student"
dim strconn as string="server=(local); database=databasename; User ID=sa; Password=;"

Dim da As New SqlDataAdapter
Dim comm As New SqlCommand
Dim conn As New SqlConnection（strconn）
comm.Connection = conn
comm.CommandType = CommandType.Text
comm.CommandText = str
da.SelectCommand = comm
conn.open
ds.fill(ds,"student")


我想问一下大家这两种有什么区别，那个好些？

怎么没人回答阿

谢谢各位了