关于动态加载DLL时出现的错误

Question

PInvoke 调用约定参数匹配

Answer 1

用委托调用外部DLL,不用声明extern ?

Answer 2

是的，动态加载有时会避免DLL的一些缺陷，比如DLL用到一些全局变量，当多线程调用时会冲突，但是动态加载就可以避免这类问题

Answer 3

动态加载DLL
http://wenku.baidu.com/link?url=CQRFDWzWTS4iVjzJvYrX5Jt8FcCyZcaHsk73XVH1ilKMANLbvMTiyIM0p4wC_T1HhNlz42kFzG9c5eZCwXLfCLmCXP2jgAbxKl0vyrctSHC

Answer 4

我一直都这么用，给你一段代码：
 public static IPugins LoadDll(string strDllName)
        { 
            if (!Directory.Exists(strPlugin))
                Directory.CreateDirectory(strPlugin);            string strDllFullName = strDllName;
            if (strDllFullName.Substring(strDllFullName.Length - 4) != ".dll")
                strDllFullName += ".dll";
            else
                strDllName = strDllName.Substring(0, strDllName.Length - 4);            byte[] inArray = getAppDll(strDllFullName);
            if (inArray == null || inArray.Length == 0)
                return null;            AppDomainSetup AppSetup = new AppDomainSetup();
            AppSetup.PrivateBinPath = strPlugin;
            AppDomain _appDomain = AppDomain.CreateDomain(Application.ProductName, null, AppSetup);
            try
            {
                _appDomain.AssemblyResolve += new ResolveEventHandler(doOnAssemblyResolve);
                ObjectHandle handle = _appDomain.CreateInstance(Convert.ToBase64String(inArray), strDllName + strNamespace);
                return (IPugins)handle.Unwrap();
            }
            catch (Exception ex)
            {
                _appDomain = null;
                try
                {
                    AppDomain.Unload(_appDomain);
                }
                catch
                {
                }
                _appDomain = null;
                throw ex;
            }
        }