HybridDictionary.Contains Method (Object)
.NET Framework (current version)
Determines whether the HybridDictionary contains a specific key.
Assembly: System (in System.dll)
Parameters
- key
-
Type:
System.Object
The key to locate in the HybridDictionary.
Return Value
Type: System.Booleantrue if the HybridDictionary contains an entry with the specified key; otherwise, false.
Implements
IDictionary.Contains(Object)| Exception | Condition |
|---|---|
| ArgumentNullException | key is null. |
This method is an O(1) operation.
Starting with the .NET Framework 2.0, this method uses the collection’s objects’ Equals and CompareTo methods on key to determine whether item exists. In the earlier versions of the .NET Framework, this determination was made by using the Equals and CompareTo methods of the item parameter on the objects in the collection.
The following code example searches for an element in a HybridDictionary.
Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Available since 10
.NET Framework
Available since 1.1
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