## X509ExtensionCollectionPtr::IsNull method




```cpp
bool System::Security::Cryptography::X509Certificates::X509ExtensionCollectionPtr::IsNull() const
```

## See Also

* Class [X509ExtensionCollectionPtr](../)
* Namespace [System::Security::Cryptography::X509Certificates](../../)
* Library [Aspose.Page for C++](../../../)