摘要:Extension Method
01 
using System;
02
using System.Linq;
03
04
05namespace UsingWhereExtensionMethod
06{
07
class Program
08
{
09 static void Main(string[] args)
10 {
11 var name = new[] { "Max", "Ginger", "HelloKitty" };
12
13 //使用 Where 函式，參數為 Delegate 實作
14
15 //標準的實作 Delegate
16 //var result = name.Where(myMethod);
17
18 //C#2.0的功能，此為匿名委派(Anonymous Delegate)
19 //var result = name.Where(
20 // delegate(string o)
21 // {
22 // return o == "Ginger";
23
// });
24
25 //在C#3.0新功能，Lambda Expression 使 Anoymous Delegate 寫法更簡單
26 var result = name.Where(a => a == "Ginger");
27
28 foreach(var v in result)
29 {
30 Console.WriteLine(v);
31 }
32 }
33
34 //實作 Delegate 必需符合 Where 函式中所定義的 Delegate signature
35 //(此範例為：回傳值 boolean，參數 string)
36 public static bool myMethod(string o)
37 {
38 return o == "Ginger";
39 }
40 }
41}
using System; 
using 02
using System.Linq; 03
04
05
namespace UsingWhereExtensionMethod 06
{ 07
class Program 08
{ 
09
static void Main(string[] args) 10
{ 11
var name = new[] { "Max", "Ginger", "HelloKitty" }; 12
13
//使用 Where 函式，參數為 Delegate 實作 14
15
//標準的實作 Delegate 16
//var result = name.Where(myMethod); 17
18
//C#2.0的功能，此為匿名委派(Anonymous Delegate) 19
//var result = name.Where( 20
// delegate(string o) 21
// { 22
// return o == "Ginger"; 23
// }); 24
25
//在C#3.0新功能，Lambda Expression 使 Anoymous Delegate 寫法更簡單 26
var result = name.Where(a => a == "Ginger"); 27
28
foreach(var v in result) 29
{ 30
Console.WriteLine(v); 31
} 32
} 33
34
//實作 Delegate 必需符合 Where 函式中所定義的 Delegate signature 35
//(此範例為：回傳值 boolean，參數 string) 36
public static bool myMethod(string o) 37
{ 38
return o == "Ginger"; 39
} 40
} 41
}
