RolePrincipal.CachedListChanged Property

Definition

Ottiene un valore che indica se l'elenco di nomi di ruoli memorizzato con l'oggetto RolePrincipal è stato modificato.Gets a value indicating whether the list of role names cached with the RolePrincipal object has been modified.

public:
 property bool CachedListChanged { bool get(); };
public bool CachedListChanged { get; }
member this.CachedListChanged : bool
Public ReadOnly Property CachedListChanged As Boolean

Property Value

Boolean

true se l'elenco di nomi di ruoli memorizzato con l'oggetto RolePrincipal è stato modificato; in caso contrario, false.true if the list of role names cached with the RolePrincipal object has been modified; otherwise, false.

Examples

Nell'esempio seguente vengono visualizzate informazioni sulla memorizzazione nella cache dei ruoli per l'utente corrente se è abilitata la gestione dei ruoli.The following example displays role-caching information for the current user if role management is enabled. Per informazioni sull'abilitazione della gestione dei ruoli, vedere la classe Roles.For information on enabling role management, see the Roles class.

<%@ Page Language="C#" %>
<%@ Import Namespace="System.Web.Security" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

public void Page_Load()
{

  try
  {
    RolePrincipal r = (RolePrincipal)User;

    IsCachedLabel.Text     = r.IsRoleListCached.ToString();
    CacheChangedLabel.Text = r.CachedListChanged.ToString();
    ExpiredLabel.Text      = r.Expired.ToString();
    VersionLabel.Text      = r.Version.ToString();
    IssueDateLabel.Text    = r.IssueDate.ToString();
    ExpireDateLabel.Text   = r.ExpireDate.ToString();
    CookiePathLabel.Text   = r.CookiePath;

    Msg.Text = "";
  }
  catch (InvalidCastException)
  {
    Msg.Text = "User is not of type RolePrincipal. Are roles enabled?";
  }

}

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Role Information</title>
</head>
<body>

<form id="form1" runat="server">

  Role Information for <b><%=User.Identity.Name%></b>.<br />

  <asp:Label id="Msg" runat="Server" ForeColor="maroon" /><br />

  <table border="1" cellpadding="4" cellspacing="4">
    <tr>
      <td>IsRoleListCached</td>
      <td><asp:Label id="IsCachedLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>CachedListChanged</td>  
      <td><asp:Label id="CacheChangedLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>Expired</td>
      <td><asp:Label id="ExpiredLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>Version</td>
      <td><asp:Label id="VersionLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>IssueDate</td>
      <td><asp:Label id="IssueDateLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>ExpireDate</td>
      <td><asp:Label id="ExpireDateLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>CookiePath</td>
      <td><asp:Label id="CookiePathLabel" runat="Server" /></td>
    </tr>
  </table>

</form>


</body>
</html>
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Web.Security" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

Public Sub Page_Load()

    Try
    Dim r As RolePrincipal = CType(User, RolePrincipal)

    IsCachedLabel.Text     = r.IsRoleListCached.ToString()
    CacheChangedLabel.Text = r.CachedListChanged.ToString()
    ExpiredLabel.Text      = r.Expired.ToString()
    VersionLabel.Text      = r.Version.ToString()
    IssueDateLabel.Text    = r.IssueDate.ToString()
    ExpireDateLabel.Text   = r.ExpireDate.ToString()
    CookiePathLabel.Text   = r.CookiePath

    Msg.Text = ""
  Catch e As InvalidCastException
    Msg.Text = "User is not of type RolePrincipal. Are roles enabled?"
  End Try

End Sub

</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Role Information</title>
</head>
<body>

<form id="form1" runat="server">

  Role Information for <b><%=User.Identity.Name%></b>.<br />

  <asp:Label id="Msg" runat="Server" ForeColor="maroon" /><br />

  <table border="1" cellpadding="4" cellspacing="4">
    <tr>
      <td>IsRoleListCached</td>
      <td><asp:Label id="IsCachedLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>CachedListChanged</td>  
      <td><asp:Label id="CacheChangedLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>Expired</td>
      <td><asp:Label id="ExpiredLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>Version</td>
      <td><asp:Label id="VersionLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>IssueDate</td>
      <td><asp:Label id="IssueDateLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>ExpireDate</td>
      <td><asp:Label id="ExpireDateLabel" runat="Server" /></td>
    </tr>
    <tr>
      <td>CookiePath</td>
      <td><asp:Label id="CookiePathLabel" runat="Server" /></td>
    </tr>
  </table>

</form>


</body>
</html>

Remarks

La proprietà CachedListChanged restituirà true dopo che i nomi di ruolo sono stati recuperati dal Provider di ruolo predefinito e aggiunti alla cache dal metodo GetRoles oppure quando il metodo IsInRole chiama il metodo IsUserInRole del provider di ruoli predefinito e quindi riceve una risposta di true, ottenendo il nome del ruolo passato al metodo IsInRole aggiunto alla cache.The CachedListChanged property will return true after role names have been retrieved from the default role Provider and added to the cache by the GetRoles method, or when the IsInRole method calls the IsUserInRole method of the default role provider and then receives a response of true, resulting in the role name passed to the IsInRole method being added to the cache.

Anche la proprietà CachedListChanged restituirà true se CookieSlidingExpiration è impostata su true e il ExpireDate è passato, causando l'impostazione di un nuovo ExpireDate.The CachedListChanged property will also return true if CookieSlidingExpiration is set to true and the ExpireDate has passed, resulting in a new ExpireDate being set.

Applies to

See also