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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

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.