public static D Mapper<D, S>(S s)
        {
            D d = Activator.CreateInstance<D>();
            try
            {
                var sType = s.GetType();
                var dType = typeof(D);
                foreach (PropertyInfo sP in sType.GetProperties())
                {
                    foreach (PropertyInfo dP in dType.GetProperties())
                    {
                        if (dP.Name == sP.Name)
                        {
                            dP.SetValue(d, sP.GetValue(s, null), null);
                            break;
                        }
                    }
                }
            }
            catch (Exception ex)
            {

            }
            return d;
        }

使用方法：

                WORKFLOWTASK w1 = new WORKFLOWTASK();
                ServiceReference2.WORKFLOWTASK w2 = lst1[i];
                w1 = IPMSService.Mapper<WORKFLOWTASK, ServiceReference2.WORKFLOWTASK>(w2);
                lst.Add(w1);

主要是将两个具有相同结构的类进行一一对应赋值。