ConfigurationElement.IsReadOnly Method

Gets a value indicating whether the ConfigurationElement object is read-only.

Namespace: System.Configuration
Assembly: System.Configuration (in system.configuration.dll)

'Declaration
Public Overridable Function IsReadOnly As Boolean
'Usage
Dim instance As ConfigurationElement
Dim returnValue As Boolean

returnValue = instance.IsReadOnly
public boolean IsReadOnly ()
public function IsReadOnly () : boolean
Not applicable.

Return Value

true if the ConfigurationElement object is read-only; otherwise, false.

The system defines configuration elements that cannot be modified.

To determine which elements can be modified, use the IsReadOnly method.

The following example shows how to use the IsReadOnly method. It is used on a custom section and returns false.

' Show how to use IsReadOnly.
' It loops to see if the elements are read only. 
Shared Sub ReadOnlyElements() 
    Try
        ' Get the current configuration file.
        Dim config _
        As System.Configuration.Configuration = _
        ConfigurationManager.OpenExeConfiguration( _
        ConfigurationUserLevel.None)

        ' Get the MyUrls section.
        Dim myUrlsSection As UrlsSection = _
        config.GetSection("MyUrls")
        
        Dim elements As UrlsCollection = _
        myUrlsSection.Urls
                   
        Dim elemEnum As IEnumerator = _
        elements.GetEnumerator()
        
        Dim i As Integer = 0
        Console.WriteLine(elements.Count.ToString())
        
        While elemEnum.MoveNext()
            Console.WriteLine("The element {0} is read only: {1}", _
            elements(i).Name, elements(i).IsReadOnly().ToString())
            i += 1
        End While
    Catch err As ConfigurationErrorsException
        Console.WriteLine("[ReadOnlyElements: {0}]", _
        err.ToString())
    End Try

End Sub 'ReadOnlyElements


Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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