I've been looking for help on how to find objects in Generics with List.Find() method .... and ... take a look what I have found.
In the follow example, I created a simple class:public class Person
{ private int _id; private string _name;public int ID { get{ return _id;} set{ _id = value;}}
public int Name { get{ return _name;} set{ _name= value;}}public Person(int id, string name)
{ _id = id; _name = name; } }In the example, there's a simple class with two private attributes. Now we're going to create a typed List of this object and take advantage of the Find() method
public void CreateAndSearchList()
{ //create and fill the collection List<Person> myList = new List<Person>(); myList.Add(new Person(1, "AndreySanches")); myList.Add(new Person(2, "AlexandreTarifa")); myList.Add(new Person(3, "EmersonFacunte"));//find a specific object
Person myLocatedObject = myList.Find(delegate(Person p) {return p.ID == 1; }); }备注：在list和array集合中搜索元素经常使用该方法，主要技术是泛型委托
list用法注意：如果增加一个对象，必须重新new一个对象，看下面的例子：
person p=new pewson();
for(int i=0;i<5;i++) { p.ID=i; p.Name="xxxx"; list.add(p); }for(int i=0;i<5;i++)
{ person p=new person(); p.ID=i; p.Name="xxxx"; list.add(p); }上 面有区别吗？在输出list的值是有区别了，第一个list里面存放的都是一样的，结果和最后一个一样，都是同一个人对象，第二个list达到预期的效 果，存储不同的人对象。这是为什么？原因很简单，一个list对象中存储的都是对一个共有的对象进行引用，所以以最后改变的值为准。
对象的排序：本文主要阐述对存储datatable的list进行按TableName排序
1、新建一个sort类
public class SceneSort:IComparer<DataTable>
{ public int Compare(DataTable obj1, DataTable obj2) { int tableNameLength1; int tableNameLength2; if (obj1 == null) { if (obj2 == null) return 0; else return -1; } else { if (obj2 == null) return 1; else { tableNameLength1=obj1.TableName.Length; tableNameLength2=obj2.TableName.Length; if (Convert.ToInt32(obj1.TableName.Substring(2,tableNameLength1-2))>Convert.ToInt32(obj2.TableName.Substring(2,tableNameLength2-2))) return 1; //大于返回1 else if (Convert.ToInt32(obj1.TableName.Substring(2,tableNameLength1-2))<Convert.ToInt32(obj2.TableName.Substring(2,tableNameLength2-2))) return -1; //小于返回-1 else return 0; //相等返回0 } }}
2 排序： List<DataTable> ldt = new List<DataTable>(); SceneSort ss=new SceneSort (); tablelist.sort(ss);即可对list进行排序；