Determines whether the 
Generic IDictionary contains an element with the specified key.
             
             
             
            
 Syntax
Syntax
| Visual Basic (Declaration) |  | 
|---|
| Public Overridable Function ContainsKey( _
   ByVal key As TKey _
) As Boolean | 
| Visual Basic (Usage) |  Copy Code | 
|---|
| Dim instance As ThreadSafeDictionary(Of TKey,TValue)
Dim key As TKey
Dim value As Boolean
 
value = instance.ContainsKey(key)
 | 
| C# |  | 
|---|
| public virtual bool ContainsKey( 
   TKey key
) | 
| C++/CLI |  | 
|---|
| public:
virtual bool ContainsKey( 
   TKey key
)  | 
Parameters
- key
- The key to locate in the Generic IDictionary.
Return Value
            true if the 
Generic IDictionary contains an element with the key; otherwise, false.
            
 Exceptions
Exceptions
 
             
             
             
            
            
             Requirements
Requirements
Target Platforms: Microsoft .NET Framework 3.0,  Windows XP, Windows Server 2003 family, Windows Server 2008 family
 See Also
See Also