Message in Chinese (Simplified) (中文(简体))
引用 ID 为“<var>X</var>”的对象无法赋给“<var>Type Name</var>”类型的集合属性，因为该属性为 get-only 属性。请考虑向属性添加 setter，或确保 get-only 集合属性不引用其他对象。
Unlocalized message
Object with reference id '<var>X</var>' cannot be assigned to the collection property of type '<var>Type Name</var>' since the property is get-only. Consider adding a setter to the property or ensure that the get-only collection property does not reference another object.
Search by Google