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ConfigurationElement.LockItem Property

Gets or sets a value indicating whether the element is locked.

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

public bool LockItem { get; set; }

Property Value

Type: System.Boolean
true if the element is locked; otherwise, false. The default is false.


The element has already been locked at a higher configuration level.

Use the LockItem property if you want to put a general lock on the element itself and its child elements.

The following example shows how to use the LockItem.

// Show how to set LockItem 
// It adds a new UrlConfigElement to  
// the collection. 
static void LockItem()
    string name = "Contoso";
    string url = "";
    int port = 8080;

        // Get the current configuration file.
        System.Configuration.Configuration config =

        // Get the MyUrls section.
        UrlsSection myUrls =
           config.Sections["MyUrls"] as UrlsSection;

        // Create the new  element.
        UrlConfigElement newElement =
            new UrlConfigElement(name, url, port);

        // Set its lock.
        newElement.LockItem = true;

        // Save the new element to the  
        // configuration file. 
        if (!myUrls.ElementInformation.IsLocked)



            // This is used to obsolete the cached  
            // section and read the updated  
            // bersion from the configuration file.
                "Section was locked, could not update.");

    catch (ConfigurationErrorsException e)
        Console.WriteLine("[LockItem: {0}]",


Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0