## String > class


The partial specialization of the [HttpHeaderValueCollection](../httpheadervaluecollection/) template for the [String](../../system/string/) type. Objects of this class should only be allocated using [System::MakeObject()](../../system/makeobject/) function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into [System::SmartPtr](../../system/smartptr/) pointer and use this pointer to pass it to functions as argument.

```cpp
class String > : public System::Collections::Generic::ICollection<System::String>
```

## Methods

| Method | Description |
| --- | --- |
| [Add](./add/)(const String\&) override | Adds element into collection. |
| [Clear](./clear/)() override | Deletes all elements from collection. |
| [Contains](./contains/)(const String\&) const override | Checks if element is present in collection. |
| [CopyTo](./copyto/)(System::ArrayPtr\<String\>, int32_t) override |  |
| [get_Count](./get_count/)() const override | Gets number of elements in collection. |
| [get_IsReadOnly](./get_isreadonly/)() |  |
| [get_IsSpecialValueSet](./get_isspecialvalueset/)() |  |
| [GetEnumerator](./getenumerator/)() override | Gets enumerator. |
| [GetHeaderStringWithoutSpecial](./getheaderstringwithoutspecial/)() |  |
| [HttpHeaderValueCollection](./httpheadervaluecollection/)(String, System::SharedPtr\<HttpHeaders\>) |  |
| [HttpHeaderValueCollection](./httpheadervaluecollection/)(String, System::SharedPtr\<HttpHeaders\>, Action\<System::SharedPtr\<HttpHeaderValueCollection\<String\>\>, String\>) |  |
| [HttpHeaderValueCollection](./httpheadervaluecollection/)(String, System::SharedPtr\<HttpHeaders\>, String) |  |
| [HttpHeaderValueCollection](./httpheadervaluecollection/)(String, System::SharedPtr\<HttpHeaders\>, String, Action\<System::SharedPtr\<HttpHeaderValueCollection\<String\>\>, String\>) |  |
| [ParseAdd](./parseadd/)(String) |  |
| [Remove](./remove/)(const String\&) override | Deletes element from collection. |
| [RemoveSpecialValue](./removespecialvalue/)() |  |
| [SetSpecialValue](./setspecialvalue/)() |  |
| [SetTemplateWeakPtr](./settemplateweakptr/)(uint32_t) override | Set n'th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. |
| [ToString](./tostring/)() const override | Analog of C# [Object.ToString()](../../system/object/tostring/) method. Enables converting custom objects to string. |
| [TryParseAdd](./tryparseadd/)(String) |  |
## See Also

* Class [ICollection](../../system.collections.generic/icollection/)
* Namespace [System::Net::Http::Headers](../)
* Library [Aspose.PUB for C++](../../)