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[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Determines whether the System.Collections.Generic.IDictionary contains an element that has the specified key.
Namespace: Microsoft.VisualStudio.GraphModel
Assembly: Microsoft.VisualStudio.GraphModel (in Microsoft.VisualStudio.GraphModel.dll)
Syntax
'Declaration
Public Function ContainsKey ( _
key As String _
) As Boolean
public bool ContainsKey(
string key
)
public:
virtual bool ContainsKey(
String^ key
) sealed
abstract ContainsKey :
key:string -> bool
override ContainsKey :
key:string -> bool
public final function ContainsKey(
key : String
) : boolean
Parameters
key
Type: System.StringThe key to locate in the System.Collections.Generic.IDictionary.
Return Value
Type: System.Boolean
True if the System.Collections.Generic.IDictionary contains an element that has the key; otherwise, false.
Implements
IDictionary<TKey, TValue>.ContainsKey(TKey)
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | key is null. |
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.