protected void Page_Load(object sender, EventArgs e)  
    {  
        Invoke("Test", "1.0.0.0", "neutral", "8d7b357e8456bb71", "Test", "Class1", "GetMessage",new object[] {"1","p"});  
    }  
  
    private string Invoke(string lpFileName, string Version, string Culture, string PublicKeyToken, string Namespace, string ClassName, string lpProcName,object[] objArr)  
    {  
        string ssc = "";  
        try  
        { // 载入程序集  
            Assembly MyAssembly = Assembly.Load(lpFileName + ", Version=" + Version + ", Culture=" + Culture + ", PublicKeyToken=" + PublicKeyToken);  
            Type[] type = MyAssembly.GetTypes();  
            foreach (Type t in type)  
            {// 查找要调用的命名空间及类  
                if (t.Namespace == Namespace && t.Name == ClassName)  
                {// 查找要调用的方法并进行调用  
                    MethodInfo m = t.GetMethod(lpProcName);  
                    if (m != null)  
                    {  
                        object o = Activator.CreateInstance(t, objArr);  
  
                        ssc = (string)m.Invoke(o, null);  
                        m.Invoke(o, null);  
                    }  
                    else   
                        ssc=" 装载出错 !";  
                }  
            }  
        }//try  
        catch (System.NullReferenceException e)  
        {  
            ssc=e.Message;  
        }//catch  
        return ssc;  
    }  

       /// <summary>
        /// 动态读取DLL,执行其中的方法
        /// </summary>
        public void LoadAssembly()
        {
            //DLL所在的绝对路径 
            Assembly assembly = Assembly.LoadFrom(AppDomain.CurrentDomain.BaseDirectory + "Entity.dll");
            //注意写法：程序集.类名  
            Type type = assembly.GetType("Entity.GetData");
            //获取类中的公共方法GetResule                                              
            MethodInfo methed = type.GetMethod("GetResule"); 
            //创建对象的实例
            object instance = System.Activator.CreateInstance(type);
            //执行方法  new object[]为方法中的参数
            object result = methed.Invoke(instance, new object[] { });
        } 

      System.AppDomain _Domain = System.AppDomain.CurrentDomain;
            Assembly[] _AssemblyList = _Domain.GetAssemblies();

            IList<string> _DllPath = new List<string>();

            for (int i = 0; i != _AssemblyList.Length; i++)
            {
                _DllPath.Add(_AssemblyList[i].Location);
            }