ResourceDictionary.Contains Method (Object)
Determines whether the ResourceDictionary contains an element with the specified key.
Assembly: PresentationFramework (in PresentationFramework.dll)
Return ValueType: System.Boolean
true if ResourceDictionary contains a key-value pair with the specified key; otherwise, false.
If the requested key is not in this resource dictionary, the resource lookup logic will also check the merged dictionaries.
Available since 3.0
Available since 2.0
Windows Phone Silverlight
Available since 7.0