参考资料：http://www.cnblogs.com/zuowj/p/7501896.html
1、通过NuGet下载Castle.Core
2、创建代理类并继承StandardInterceptor
参考代码如下
using Castle.DynamicProxy;using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Threading.Tasks;namespace ConsoleApplication2{ ???public class TestInterceptor : StandardInterceptor ???{ ???????/// <summary> ???????/// 创建代理类 ???????/// </summary> ???????/// <typeparam name="T"></typeparam> ???????/// <returns></returns> ???????public static T CreateProxy<T>() where T : class ???????{ ???????????ProxyGenerator generator = new ProxyGenerator(); ???????????var testa = generator.CreateClassProxy<T>(new TestInterceptor()); ???????????return testa; ???????} ???????/// <summary> ???????/// 执行前 ???????/// </summary> ???????/// <param name="invocation"></param> ???????protected override void PreProceed(IInvocation invocation) ???????{ ???????????Console.WriteLine(invocation.Method.Name + "执行前,入参：" + string.Join(",", invocation.Arguments)); ???????} ???????/// <summary> ???????/// 执行中 ???????/// </summary> ???????/// <param name="invocation"></param> ???????protected override void PerformProceed(IInvocation invocation) ???????{ ???????????Console.WriteLine(invocation.Method.Name + "执行中"); ???????????try ???????????{ ???????????????base.PerformProceed(invocation); ???????????} ???????????catch (Exception ex) ???????????{ ???????????????Console.WriteLine(ex.ToString()); ???????????} ???????} ???????/// <summary> ???????/// 执行后 ???????/// </summary> ???????/// <param name="invocation"></param> ???????protected override void PostProceed(IInvocation invocation) ???????{ ???????????Console.WriteLine(invocation.Method.Name + "执行后，返回值：" + invocation.ReturnValue); ???????} ???}}3、创建测试类
public class TestB ???{ ???????public virtual string GetResult() ???????{ ???????????string str = DateTime.Now + "TestB-GetResult"; ???????????Console.WriteLine(str); ???????????return str; ???????} ???????public virtual string GetResult2() ???????{ ???????????string str = DateTime.Now + "TestB-GetResult2"; ???????????Console.WriteLine(str); ???????????return str; ???????} ???}4、使用AOP方式调用方法
TestInterceptor.CreateProxy<TestB>().GetResult();
重点：virtual
Castle只会对virtual标记的虚方法进行代理
.net AOP Castle.Core
原文地址：https://www.cnblogs.com/jianghaidong/p/9964781.html