C#范型List的一些方法的使用

<%@PageLanguage="C#"AutoEventWireup="true"CodeFile="GenericList.aspx.cs"Inherits="GenericList"%>

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<!DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

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05

<

html

xmlns

=

"http://www.w3.org/1999/xhtml"

>

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<

head

runat

=

"server"

>

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<

title

>GenericList</

title

>

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</

head

>

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<

body

>

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<

form

id

=

"form1"

runat

=

"server"

>

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<

div

>

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原始資料：

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<

asp:GridView

ID

=

"GridView1"

runat

=

"server"

>

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</

asp:GridView

>

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</

div

>

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</

form

>

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</

body

>

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</

html

>

using

System;

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using

System.Collections.Generic;

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using

System.Web;

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using

System.Web.UI;

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using

System.Web.UI.WebControls;

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public

partial

class

GenericList:System.Web.UI.Page

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{

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protected

void

Page_Load(

object

sender,EventArgse)

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{

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List<Person>lstPerson=

new

List<Person>();

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lstPerson.Add(

new

Person(1,

"puma"

,10));

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lstPerson.Add(

new

Person(2,

"F6Team"

,20));

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lstPerson.Add(

new

Person(3,

"ASP.NET"

,30));

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lstPerson.Add(

new

Person(4,

"Dotblogs"

,40));

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//原始資料顯示在GridView上

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this

.GridView1.DataSource=lstPerson;

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this

.GridView1.DataBind();

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//List<T>.Find()

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//找出Name='puma'的Person

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Response.Write(

"找出Name='puma'的Person→"

);

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Response.Write(lstPerson.Find(

delegate

(Personp){

return

p.Name==

"puma"

;}).ToString()+

"<p>"

);

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029

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//List<T>.FindAll()

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//找出Age>10的數目

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Response.Write(

"找出Age>10的數目→"

);

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Response.Write(lstPerson.FindAll(

delegate

(Personp){

return

p.Age>10;}).Count.ToString()+

"<p>"

);

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//List<T>.Exists()

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//檢查Name='F6'是否存在

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Response.Write(

"檢查Name='F6'是否存在→"

);

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Response.Write(lstPerson.Exists(

delegate

(Personp){

return

p.Name==

"F6"

;}).ToString()+

"<p>"

);

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//List<T>.Sort()

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//依Name升冪排序

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Response.Write(

"<p>依Name升冪排序↑<br/>"

);

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lstPerson.Sort(

delegate

(Personp1,Personp2){

return

Comparer<

string

>.Default.Compare(p1.Name,p2.Name);});

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foreach

(Personp

in

lstPerson)

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{

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Response.Write(p.ToString()+

"<br/>"

);

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}

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//List<T>.Sort()

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//依Name降冪排序

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Response.Write(

"<p>依Name降冪排序↓<br/>"

);

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lstPerson.Sort(

delegate

(Personp1,Personp2){

return

Comparer<

string

>.Default.Compare(p2.Name,p1.Name);});

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foreach

(Personp

in

lstPerson)

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{

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Response.Write(p.ToString()+

"<br/>"

);

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}

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}

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}

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public

class

Person

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{

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private

int

_ID;

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private

string

_Name;

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private

int

_Age;

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public

Person(

int

ID,

string

Name,

int

Age)

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{

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_ID=ID;

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_Name=Name;

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_Age=Age;

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}

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public

int

ID

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{

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set

{_ID=value;}

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get

{

return

_ID;}

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}

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public

string

Name

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{

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set

{_Name=value;}

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get

{

return

_Name;}

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}

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public

int

Age

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{

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set

{_Age=value;}

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get

{

return

_Age;}

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}

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public

override

string

ToString()

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{

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return

string

.Format(

"ID：{0}，Name：{1}，Age：{2}"

,
_ID,_Name,_Age);

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}

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}