Lookup<TKey,TElement>.Contains(TKey) Method
Definition
Important
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Determines whether a specified key is in the Lookup<TKey,TElement>.
public:
virtual bool Contains(TKey key);
public bool Contains (TKey key);
abstract member Contains : 'Key -> bool
override this.Contains : 'Key -> bool
Public Function Contains (key As TKey) As Boolean
Parameters
- key
- TKey
The key to find in the Lookup<TKey,TElement>.
Returns
true
if key
is in the Lookup<TKey,TElement>; otherwise, false
.
Implements
Examples
The following example demonstrates how to use Contains to determine whether a Lookup<TKey,TElement> contains a specified key. This code example is part of a larger example provided for the Lookup<TKey,TElement> class.
// Determine if there is a key with the value 'G' in the Lookup.
bool hasG = lookup.Contains('G');
' Determine if there is a key with the value 'G' in the Lookup.
Dim hasG As Boolean = lookup.Contains("G"c)
Applies to
.NET
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