## BaseDictionary::GetValueOrNull method


如果找到则返回值；否则返回 **null**。仅对引用类型有意义。

```cpp
mapped_t System::Collections::Generic::BaseDictionary<Map>::GetValueOrNull(const key_t &key) const override
```

## 另见

* Class [BaseDictionary](../)
* Namespace [System::Collections::Generic](../../)
* Library [Aspose.Page for C++](../../../)