ConfigurationElement.LockItem 属性
重要
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获取或设置一个值，该值指示是否已锁定该元素。
public:
property bool LockItem { bool get(); void set(bool value); };public bool LockItem { get; set; }member this.LockItem : bool with get, setPublic Property LockItem As Boolean如果元素被锁定，则为 true；否则为 false。 默认值为 false。
元素已被锁定在更高的配置级别。
以下示例演示如何使用 LockItem。
// Show how to set LockItem
// It adds a new UrlConfigElement to
// the collection.
static void LockItem()
{
string name = "Contoso";
string url = "http://www.contoso.com/";
int port = 8080;
try
{
// Get the current configuration file.
System.Configuration.Configuration config =
ConfigurationManager.OpenExeConfiguration(
ConfigurationUserLevel.None);
// 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)
{
myUrls.Urls.Add(newElement);
config.Save(ConfigurationSaveMode.Full);
// This is used to obsolete the cached
// section and read the updated
// bersion from the configuration file.
ConfigurationManager.RefreshSection("MyUrls");
}
else
Console.WriteLine(
"Section was locked, could not update.");
}
catch (ConfigurationErrorsException e)
{
Console.WriteLine("[LockItem: {0}]",
e.ToString());
}
}
' Show how to set LockItem
' It adds a new UrlConfigElement to
' the collection.
Shared Sub LockItem()
Dim name As String = "Contoso"
Dim url As String = "http://www.contoso.com/"
Dim port As Integer = 8080
Try
' Get the current configuration file.
Dim config _
As System.Configuration.Configuration = _
ConfigurationManager.OpenExeConfiguration( _
ConfigurationUserLevel.None)
' Get the MyUrls section.
Dim myUrls As UrlsSection = _
config.Sections("MyUrls")
' Create the new element.
Dim newElement _
As New UrlConfigElement(name, url, port)
' Set its lock.
newElement.LockItem = True
' Save the new element to the
' configuration file.
If Not myUrls.ElementInformation.IsLocked Then
myUrls.Urls.Add(newElement)
config.Save(ConfigurationSaveMode.Full)
' This is used to obsolete the cached
' section and read the updared version
' from the configuration file.
ConfigurationManager.RefreshSection("MyUrls")
Else
Console.WriteLine("Section was locked, could not update.")
End If
Catch e As ConfigurationErrorsException
Console.WriteLine("[LockItem: {0}]", _
e.ToString())
End Try
End Sub
LockItem如果要在元素本身及其子元素上放置常规锁，请使用 属性。
