/*参考:http://www.cnblogs.com/encoding/archive/2010/09/10/1823399.html
     *     http://www.cnblogs.com/encoding/archive/2010/09/10/1823444.html
     * */
    /// <summary>
    /// 反射帮助类
    /// </summary>
    public static class ReflectionHelper
    {
        /// <summary>
        /// 创建对象实例
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="fullName">命名空间.类型名</param>
        /// <param name="assemblyName">程序集</param>
        /// <returns></returns>
        public static T CreateInstance<T>(string fullName, string assemblyName)
        {
            string path = fullName + "," + assemblyName;//命名空间.类型名,程序集
            Type o = Type.GetType(path);//加载类型
            object obj = Activator.CreateInstance(o, true);//根据类型创建实例
            return (T)obj;//类型转换并返回
        }

        /// <summary>
        /// 创建对象实例
        /// </summary>
        /// <typeparam name="T">要创建对象的类型</typeparam>
        /// <param name="assemblyName">类型所在程序集名称</param>
        /// <param name="nameSpace">类型所在命名空间</param>
        /// <param name="className">类型名</param>
        /// <returns></returns>
        public static T CreateInstance<T>(string assemblyName, string nameSpace, string className)
        {
            try
            {
                string fullName = nameSpace + "." + className;//命名空间.类型名
                //此为第一种写法
                object ect = Assembly.Load(assemblyName).CreateInstance(fullName);//加载程序集，创建程序集里面的 命名空间.类型名 实例
                return (T)ect;//类型转换并返回
                //下面是第二种写法
                //string path = fullName + "," + assemblyName;//命名空间.类型名,程序集
                //Type o = Type.GetType(path);//加载类型
                //object obj = Activator.CreateInstance(o, true);//根据类型创建实例
                //return (T)obj;//类型转换并返回
            }
            catch
            {
                //发生异常，返回类型的默认值
                return default(T);
            }
        }
    }