HttpRequestHeaderCollection.Lookup(String) Method

Definition

Namespace:

Windows.Web.Http.Headers

Finds an item in the HttpRequestHeaderCollection if it exists.

public:
 virtual Platform::String ^ Lookup(Platform::String ^ key) = IMap<Platform::String ^, Platform::String ^>::Lookup;

winrt::hstring Lookup(winrt::hstring const& key);

public string Lookup(string key);

function lookup(key)

Public Function Lookup (key As String) As String

Parameters

key

String

Platform::String

winrt::hstring

The key of the item to lookup.

Returns

String

Platform::String

winrt::hstring

The value, if an item with the specified key exists. Use the HasKey method to determine whether the key exists.

Implements

Lookup(K)

Remarks

Use the HasKey method to determine whether the key exists in the HttpRequestHeaderCollection.