HttpRequestHeaderCollection.Lookup(String) Method
Definition
Important
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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
The value, if an item with the specified key exists. Use the HasKey method to determine whether the key exists.
Implements
Remarks
Use the HasKey method to determine whether the key exists in the HttpRequestHeaderCollection.
Applies to
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