HybridDictionary.Contains Method
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 a null reference (Nothing in Visual Basic). |
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.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.