System.Linq.Dynamic IEnumerable OrderBy - ienumerable

Question

var list = new List<stu> {
new stu{ id=1,name="123" },
new stu{ id=2,name="a123" },
new stu{ id=3,name="b123" },
new stu{ id=4,name="c123" },
new stu{ id=5,name="d123" },
new stu{ id=6,name="e123" },
new stu{ id=7,name="f123" },
};
var data = list.Select("name").OrderBy("name");
The Select Method return IEnumerable type,then OrderBy,however throw error
No property or field 'name' exists in type 'String'

Answer 1

Your code is a bit wonky, or at least incomplete, so I wasn't able to quite figure out what you're up to outside of this snippet. Assuming you have something like this:
class stu
{
private int m_id;
private string m_name;
public int Id { get { return m_id; } set { m_id=value; } }
public string Name { get { return m_name; } set { m_name=value; } }
public stu(int id,string name)
{
m_id=id;
m_name=name;
}
}
It appears to me that your code wouldn't even compile on numerous fronts. This could be because I am using an older Visual Studio. To get this to compile, I changed the first part like so (you'll note that I mixed up the alpha order to allow you to see that the sorting actually happens):
var list = new List<stu>
{
new stu(1,"123"),
new stu(2,"f123"),
new stu(3,"b123"),
new stu(4,"e123"),
new stu(5,"d123"),
new stu(6,"c123"),
new stu(7,"a123"),
};
After that, it looks from your code as if you are expecting back a list of stu, but are getting back a list of string. What I would do here is order the list first, then select and get back a sorted list of strings.
var data = list.OrderBy(s => s.Name).Select(s => s.Name).ToList();
foreach(string str in data) { Console.WriteLine(str); }
If what you really want back on the select is a sorted List of stu then you would modify like so.
var data = list.OrderBy(s => s.Name);
foreach(stu s in data) { Console.WriteLine(s.Name); }
Let me know if I am missing your intent.