結論：
以下是測試代碼：
using?System;
using?System.Collections.Generic;
using?System.Reflection;
using?System.Text;

namespace?GenericMethodTest
{
????//?為泛型方法定義的委托
????public?delegate?void?GM<T>(T?obj,?IList<T>?list);

????//?為非泛型方法定義的接口
????public?interface?ING
????{
????????void?NGM(object?obj,?object?list);
????}

????class?Program
????{
????????static?void?Main(string[]?args)
????????{
????????????List<int>?list?=?new?List<int>();
????????????System.Diagnostics.Stopwatch?watch?=?new?System.Diagnostics.Stopwatch();
????????????watch.Reset();
????????????watch.Start();
????????????for?(int?i?=?0;?i?<?1000000;?i++)
????????????{
????????????????list.Add(i);
????????????}
????????????watch.Stop();
????????????long?l1?=?watch.ElapsedMilliseconds;
????????????watch.Reset();
????????????watch.Start();
????????????GM<int>?gm?=?new?GM<int>(Program.Add);
????????????for?(int?i?=?0;?i?<?1000000;?i++)
????????????{
????????????????gm(i,?list);
????????????}
????????????watch.Stop();
????????????long?l2?=?watch.ElapsedMilliseconds;
????????????watch.Reset();
????????????watch.Start();
????????????MethodInfo?mi?=?typeof(Program).GetMethod("Add");
????????????MethodInfo?gmi?=?mi.MakeGenericMethod(typeof(int));
????????????for?(int?i?=?0;?i?<?1000000;?i++)
????????????{
????????????????gmi.Invoke(null,?new?object[]?{?i,?list?});
????????????}
????????????watch.Stop();
????????????long?l3?=?watch.ElapsedMilliseconds;
????????????watch.Reset();
????????????watch.Start();
????????????ING?ng1?=?GetNGC(typeof(int),?typeof(Program),?"Add");
????????????for?(int?i?=?0;?i?<?1000000;?i++)
????????????{
????????????????ng1.NGM(i,?list);
????????????}
????????????watch.Stop();
????????????long?l4?=?watch.ElapsedMilliseconds;
????????????watch.Reset();
????????????watch.Start();
????????????ING?ng2?=?InterfaceGenerator.GetInterface<ING>(new?GM<int>(Program.Add));
????????????for?(int?i?=?0;?i?<?1000000;?i++)
????????????{
????????????????ng2.NGM(i,?list);
????????????}
????????????watch.Stop();
????????????long?l5?=?watch.ElapsedMilliseconds;
????????????Console.WriteLine("{0}\n{1}?vs?{2}?vs?{3}?vs?{4}?vs?{5}",?list.Count,?l1,?l2,?l3,?l4,?l5);
????????????Console.ReadLine();
????????}

????????public?static?void?Add<T>(T?obj,?IList<T>?list)
????????{
????????????list.Add(obj);
????????}

????????static?ING?GetNGC(Type?genericType,?Type?methodType,?string?methodName)
????????{
????????????MethodInfo?mi?=?methodType.GetMethod(methodName);
????????????MethodInfo?gmi?=?mi.MakeGenericMethod(genericType);
????????????Delegate?gmd?=?Delegate.CreateDelegate(typeof(GM<>).MakeGenericType(genericType),?gmi);
????????????return?Activator.CreateInstance(typeof(GClass<>).MakeGenericType(genericType),?gmd)?as?ING;
????????}
????}

????public?class?GClass<T>?:?ING
????{
????????private?GM<T>?m_gmd;

????????public?GClass(GM<T>?gmd)
????????{
????????????m_gmd?=?gmd;
????????}

????????INGClass?成員
????}
}
測試結果：

方案	耗時	比對	其他優點
直接調用	18	1	不通用
泛型委托包裝	43	2.39	不通用
反射	16538	918.78	通用，不需額外定義
非泛型接口包裝	60	3.33	通用，需要額外定義并實現
動態生成的非泛型接口包裝	72	4	通用，需要額外定義

版權聲明：原創作品，如需轉載，請注明出處。否則將追究法律責任 本文轉自 obarton 51CTO博客，原文鏈接:http://blog.51cto.com/kanas/285945

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