Dictionary. Contains(Object) Method
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Determines whether the ResourceDictionary contains an element with the specified key.
public: virtual bool Contains(System::Object ^ key);
public bool Contains (object key);
abstract member Contains : obj -> bool override this.Contains : obj -> bool
Public Function Contains (key As Object) As Boolean
true if ResourceDictionary contains a key-value pair with the specified key; otherwise,
If the requested key is not in this resource dictionary, the resource lookup logic will also check the merged dictionaries.