## IfUnmodifiedSince field


ال 'If-Unmodified-Since' اسم الرأس.

```cpp
static const String System::Net::HttpKnownHeaderNames::IfUnmodifiedSince
```

## انظر أيضًا

* Class [HttpKnownHeaderNames](../)
* Namespace [System::Net](../../)
* Library [Aspose.Page for C++](../../../)