标签:ref 不可 new proxy class ica 简单 str tor
加载dll最简单的写法
Assembly.Load("<dll路径>")
但这样写这个dll就被程序占用不可删除,即不可以卸载。
通过AppDomain加代理的方式进行加载则可以实现卸载,从而实现程序不被占用并被删除。
第一步,创建AssemblyProxy类
public class AssemblyProxy : MarshalByRefObject { private Assembly assembly; public void LoadAssembly(string fullName) { assembly = Assembly.LoadFrom(fullName); }/// <summary> /// 开放委托,可使用Assembly操作 /// </summary> /// <param name="action"></param> public T Work<T>(Func<Assembly, T> action) { return action.Invoke(assembly); } }
AssemblyProxy类将运行在子AppDomain中,通过操作AssemblyProxy类进行反射加载的DLL。保证AppDomain.CurrentDomain和子AppDomain隔离,最后卸载子AppDomain就实现了动态加载和卸载dll的目标。
第二步,实现AssemblyLoader类
public class AssemblyLoader { private AppDomain appDomain; public AssemblyProxy Proxy; public AssemblyLoader() { AppDomainSetup setup = new AppDomainSetup(); setup.ApplicationName = "Child"; setup.ApplicationBase = AppDomain.CurrentDomain.BaseDirectory; setup.PrivateBinPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "private"); setup.CachePath = setup.ApplicationBase; setup.ShadowCopyFiles = "true"; setup.ShadowCopyDirectories = setup.ApplicationBase; appDomain = AppDomain.CreateDomain("ChildDomain", null, setup); string name = Assembly.GetExecutingAssembly().GetName().FullName;
// 从子类AppDomain中反射创建AssemblyProxys实例 Proxy = (AssemblyProxy)appDomain.CreateInstanceAndUnwrap(name, typeof(AssemblyProxy).FullName); } public void LoadAssembly(string fullName) { Proxy.LoadAssembly(fullName); } public void Unload() { AppDomain.Unload(appDomain); appDomain = null; } }
接着就可以使用了
var loader = new AssemblyLoader(); loader.LoadAssembly(path); var version = loader.Proxy.Work(assembly => { return assembly.GetName().Version.ToString(); }); loader.Unload();
标签:ref 不可 new proxy class ica 简单 str tor
原文地址:https://www.cnblogs.com/saving/p/10551441.html