IsolatedStorageSettings.Contains Method
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Determines if the application settings dictionary contains the specified key.
Namespace: System.IO.IsolatedStorage
Assembly: System.Windows (in System.Windows.dll)
Syntax
'Declaration
Public Function Contains ( _
key As String _
) As Boolean
public bool Contains(
string key
)
Parameters
- key
Type: System.String
The key for the entry to be located.
Return Value
Type: System.Boolean
true if the dictionary contains the specified key; otherwise, false.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | key is nulla null reference (Nothing in Visual Basic). |
Remarks
Use this method to determine whether a key is present in the dictionary.
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.