RolePrincipal.CachedListChanged Property

 

Gets a value indicating whether the list of role names cached with the RolePrincipal object has been modified.

Namespace:   System.Web.Security
Assembly:  System.Web (in System.Web.dll)

Public ReadOnly Property CachedListChanged As Boolean

Property Value

Type: System.Boolean

true if the list of role names cached with the RolePrincipal object has been modified; otherwise, false.

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.

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.

The following example displays role-caching information for the current user if role management is enabled. For information on enabling role management, see the Roles class.

<%@ 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>

.NET Framework
Available since 2.0
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