[英]list is not getting sorted using IComparable<T>
This is my abstract base class: 这是我的抽象基类:
public abstract class BaseDataModel<T> : System.IComparable<T> where T : BaseDataModel<T>
{
public int ID { get; set; }
public int CreatedBy { get; set; }
public DateTime CreatedOn { get; set; }
public int? UpdatedBy { get; set; }
public DateTime? UpdatedOn { get; set; }
#region IComparable<T> Members
public virtual int CompareTo(T other)
{
return ID.CompareTo(other.ID);
}
#endregion
}
This class represents Person and imherits from the BaseDataModel class. 此类表示Person及其继承自BaseDataModel的类。
public class Person : BaseDataModel<Person>
{
public string Name { get; set; }
}
But when i am trying to sort the List using sort() method, it doesnt work. 但是,当我尝试使用sort()方法对列表进行排序时,它不起作用。 It returns the sorted list with 2 objects but all the properties in those objects are null. 它返回包含2个对象的排序列表,但这些对象中的所有属性均为null。
static void Main(string[] args)
{
List<Person> pList = new List<Person>();
Person p = new Person();
p.ID=2;
p.Name="Z";
pList.Add(p);
Person p1 = new Person();
p.ID = 1;
p.Name = "A";
pList.Add(p1);
pList.Sort();
Console.Read();
}
}
What is the problem here? 这里有什么问题?
You're setting the properties of p
twice; 您要设置p
的属性两次; you never set p1.ID
. 您永远不会设置p1.ID
The problem is here: 问题在这里:
Person p = new Person();
p.ID=2;
p.Name="Z";
pList.Add(p);
Person p1 = new Person();
p.ID = 1;
p.Name = "A";
pList.Add(p1);
This should be: 应该是:
Person p = new Person();
p.ID=2;
p.Name="Z";
pList.Add(p);
Person p1 = new Person();
// Change properties of p1, not p!
p1.ID = 1;
p1.Name = "A";
pList.Add(p1);
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