LinQ VS Normal Code (Sql Data Adapter vs Sql Data Reader)

class Sample
{
public string Name {get; set;}
public int ID {get; set;}
}

//Method 1
var list =(from row in ds.Tables[0].AsEnumerable()
                                         select new Sample
                                         {
                                             Name= row.Field<string>("Name"),
                                             ID= row.Field<int>("ID")
                                         }
                                          ).ToList();

//Method 2
List<Sample> sampleList = new List<Sample>(); 
while(sqlDataReader.Read())
{
Sample s1 = new Sample();
s1.Name = (string)sqlDataReader["Name"];
s1.ID = (int)sqlDataReader["ID"];
sampleList.Add(s1);
}