public static class DeepCopyHelper  {    public static object Copy(this object obj)   {     Object targetDeepCopyObj;     Type targetType = obj.GetType();     //值類型     if (targetType.IsValueType == true)     {       targetDeepCopyObj = obj;     }     //引用類型      else     {       targetDeepCopyObj = System.Activator.CreateInstance(targetType);  //創建引用對象        System.Reflection.MemberInfo[] memberCollection = obj.GetType().GetMembers();        foreach (System.Reflection.MemberInfo member in memberCollection)       {         if (member.MemberType == System.Reflection.MemberTypes.Field)         {           System.Reflection.FieldInfo field = (System.Reflection.FieldInfo)member;           Object fieldValue = field.GetValue(obj);           if (fieldValue is ICloneable)           {             field.SetValue(targetDeepCopyObj, (fieldValue as ICloneable).Clone());           }           else           {             field.SetValue(targetDeepCopyObj, Copy(fieldValue));           }          }         else if (member.MemberType == System.Reflection.MemberTypes.Property)         {           System.Reflection.PropertyInfo myProperty = (System.Reflection.PropertyInfo)member;           MethodInfo info = myProperty.GetSetMethod(false);           if (info != null)           {             object propertyValue = myProperty.GetValue(obj, null);             if (propertyValue is ICloneable)             {               myProperty.SetValue(targetDeepCopyObj, (propertyValue as ICloneable).Clone(), null);             }             else             {               myProperty.SetValue(targetDeepCopyObj, Copy(propertyValue), null);             }           }          }       }     }     return targetDeepCopyObj;   } }