反射实现类报错

[起个昵称真费劲]

bi就不报错，bi2就报错，啊啊啊，弄了半天也弄不好

        /// <summary>
        /// 得到实现类
        /// </summary>
        /// <param name="usingstr">实现类的命名空间</param>
        /// <param name="classname">实现类的类名 </param>
        /// <returns>实现类 要强转成接口</returns>
        public static object GetAchieve(string usingstr, string classname)
        {
            object obj = new object();
            Assembly assembly = Assembly.GetExecutingAssembly(); // 获取当前程序集 

            try
            {
                obj = assembly.CreateInstance(usingstr + "." + classname);
                if (obj == null)
                {
                    string _strFilePath = System.IO.Path.GetDirectoryName(HttpContext.Current.Request.PhysicalApplicationPath) + "//bin//";
                    assembly = Assembly.LoadFile(_strFilePath + usingstr + ".DLL"); // 加载程序集（EXE 或 DLL）
                    obj = assembly.CreateInstance(usingstr + "." + classname); // 创建类的实例 
                }
            }
            catch { }
            return obj;
        }

[起个昵称真费劲]

报不能强制转换为接口...

[tcmakebest]

bi和bi2本来就是不搭界的两个东东.

[Poopaye]

拆箱错误而已

BSI bi2 = (BSI)(TaskAPP.BLL.h_ast_repair)obj