关注性能：反射操作

测试代码
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1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Reflection;
6
7 namespace CSharpStudy
8 {
9     class Program
10     {
11         static void Main(string[] args)
12         {
13             {
14                 dynamic dynamicObject = new StringBuilder();
15
16                 Helper.Watch(() =>
17                 {
18                     for (var i = 0; i < 1000000; i++)
19                     {
20                         dynamicObject.Append("hello");
21                     }
22                 });
23             }
24
25             {
26                 var appendMethod = typeof(StringBuilder).GetMethod("Append", new Type[] { typeof(string) });
27                 var sb = new StringBuilder();
28
29                 Helper.Watch(() =>
30                 {
31                     for (var i = 0; i < 1000000; i++)
32                     {
33                         appendMethod.Invoke(sb, new object[] { "hello" });
34                     }
35                 });
36             }
37
38             {
39                 var appendMethod = typeof(StringBuilder).GetMethod("Append", new Type[] { typeof(string) });
40                 var sb = new StringBuilder();
41                 var appendAction = (Func<string, StringBuilder>)Delegate.CreateDelegate(typeof(Func<string, StringBuilder>), sb, appendMethod);
42
43                 Helper.Watch(() =>
44                 {
45                     for (var i = 0; i < 1000000; i++)
46                     {
47                         appendAction("hello");
48                     }
49                 });
50             }
51         }
52     }
53

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补充：Web开发 , ASP.Net ,