C#实现动态加载dll的方法

本文实例讲述了c#实现动态加载dll的方法。分享给大家供大家参考。具体实现方法如下：

using system;
using system.collections.generic;
using system.text;
using system.reflection;
using system.io;

namespace alif.commonapi.dynamicloadassembly
{
    public class assemblydynamicloader<t>
    {
        private appdomain appdomain;

        private dynamicremoteloadassembly<t> remoteloader;

        public t invokemethod(string assemblyname, string assemblypath, string assemblyconfigfilepath, string fullclassname, string methodname, params object[] args)
        {
            appdomainsetup setup = new appdomainsetup();
            setup.applicationname = "applicationloader";
            setup.applicationbase = appdomain.currentdomain.basedirectory + @"bin\";
            //setup.privatebinpath = path.combine(appdomain.currentdomain.basedirectory, "private");
            setup.cachepath = setup.applicationbase;
            setup.shadowcopyfiles = "true";
            if (assemblyconfigfilepath != string.empty)
            {
                setup.configurationfile = appdomain.currentdomain.basedirectory + assemblyconfigfilepath;
            }
            setup.shadowcopydirectories = setup.applicationbase;
            setup.loaderoptimization = loaderoptimization.singledomain;

            this.appdomain = appdomain.createdomain("applicationloaderdomain", null, setup);
            string name = assembly.getexecutingassembly().getname().fullname;

            this.remoteloader = (dynamicremoteloadassembly<t>)this.appdomain.createinstanceandunwrap(name, typeof(dynamicremoteloadassembly<t>).fullname);

            assemblyname = appdomain.currentdomain.basedirectory + assemblypath + assemblyname;

            return this.remoteloader.invokemethod(assemblyname, fullclassname, methodname, args);
        }

        /// <summary>
        ///
        /// </summary>
        public void unload()
        {
            try
            {
                appdomain.unload(this.appdomain);
                this.appdomain = null;
            }
            catch (cannotunloadappdomainexception ex)
            {

            }
        }
    }
}

using system;
using system.collections.generic;
using system.text;
using system.reflection;
using system.globalization;

namespace alif.commonapi.dynamicloadassembly
{
    public class dynamicremoteloadassembly<t> : marshalbyrefobject
    {
        private assembly assembly = null;

        public t invokemethod(string assemblypath, string fullclassname, string methodname, params object[] args)
        {
            this.assembly = null;
            t result = default(t);
            try
            {
                this.assembly = assembly.loadfile(assemblypath);
                type pgmtype = null;
                if (this.assembly != null)
                {
                    pgmtype = this.assembly.gettype(fullclassname, true, true);
                }
                else
                {
                    pgmtype = type.gettype(fullclassname, true, true);
                }
                bindingflags defaultbinding = bindingflags.declaredonly | bindingflags.public | bindingflags.nonpublic | bindingflags.instance | bindingflags.ignorecase | bindingflags.invokemethod | bindingflags.static;
                cultureinfo cultureinfo = new cultureinfo("es-es", false);
                try
                {
                    methodinfo methisinfo = assembly.gettype(fullclassname, true, true).getmethod(methodname);

                    if (methisinfo == null)
                    {
                        new exception("emethod　does　not　exist!");
                    }

                    if (methisinfo.isstatic)
                    {
                        if (methisinfo.getparameters().length == 0)
                        {
                            if (methisinfo.returntype == typeof(void))
                            {
                                pgmtype.invokemember(methodname, defaultbinding, null, null, null, cultureinfo);
                            }
                            else
                            {
                                result = (t)pgmtype.invokemember(methodname, defaultbinding, null, null, null, cultureinfo);
                            }
                        }
                        else
                        {
                            if (methisinfo.returntype == typeof(void))
                            {
                                pgmtype.invokemember(methodname, defaultbinding, null, null, args, cultureinfo);
                            }

                            else
                            {
                                result = (t)pgmtype.invokemember(methodname, defaultbinding, null, null, args, cultureinfo);
                            }
                        }
                    }
                    else
                    {

                        if (methisinfo.getparameters().length == 0)
                        {
                            object pgmclass = activator.createinstance(pgmtype);
                            if (methisinfo.returntype == typeof(void))
                            {
                                pgmtype.invokemember(methodname, defaultbinding, null, pgmclass, null, cultureinfo);
                            }
                            else
                            {
                                result = (t)pgmtype.invokemember(methodname, defaultbinding, null, pgmclass, null, cultureinfo);
                            }
                        }
                        else
                        {
                            object pgmclass = activator.createinstance(pgmtype);
                            if (methisinfo.returntype == typeof(void))
                            {
                                pgmtype.invokemember(methodname, defaultbinding, null, pgmclass, args, cultureinfo);
                            }
                            else
                            {
                                result = (t)pgmtype.invokemember(methodname, defaultbinding, null, pgmclass, args, cultureinfo);
                            }
                        }
                    }
                }
                catch (exception e)
                {
                    result = (t)pgmtype.invokemember(methodname, defaultbinding, null, null, null, cultureinfo);
                }
                return result;
            }
            catch (exception ee)
            {
                return result;
            }
        }
    }
}

希望本文所述对大家的c#程序设计有所帮助。