我们可以将匿名类型转换为列表吗 <T> 在C＃中使用Linq实体？

Question

I have a table with three columns i want to use self join and retrieve the columns with alias name.

Table: Material(ID,Name,MaterialParentID)

public List<Material> GetMaterialList()
{
    List<Material> materilaList = new List<Material>();
    var query = (from c1 in db.Materials
                 join c2 in db.Materials on c1.ID equals c2.MaterialParentID
                 select c2);        

    return query.ToList();
}

I want to add following to exisiting query and return the List

select new { c2.ID, c2.MaterialParentID, c2.Name, ParentName = c1.Name })

Answer 1

Just use the actual concrete type instead of an anonymous one:

select new Material { 
    ID = c2.ID, 
    MaterialParentID = c2.MaterialParentID, 
    Name = c2.Name,
    ParentName = c1.Name 
}

Answer 2

foreach(var row in query)
{
    material mat =new material();
    mat.id=row.ID;
    mat.name=row.Name;

    materilaList.add(mat);
}

return materiList;