ProfileBase Constructor
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Creates an instance of the ProfileBase class.
public:
ProfileBase();public ProfileBase ();Public Sub New ()Exceptions
The enabled attribute of the profile section of the Web.config file is false.
A property type specified in the profile section of the Web.config file could not be created.
-or-
The allowAnonymous attribute for a property in the profile section of the Web.config file is set to true and the enabled attribute of the <anonymousIdentification> element is set to false.
-or-
The serializeAs attribute for a property in the profile section of the Web.config file is set to Binary and the IsSerializable property of the specified type returns false.
-or-
The name of a provider specified using the provider attribute of a profile property could not be found in the Providers collection.
-or-
The type specified for a profile property could not be found.
-or-
A profile property was specified with a name that matches a property name on the base class specified in the inherits attribute of the profile section.
Examples
The following Web.config file specifies a user profile that contains a ZipCode property of type string and a RecentSearchList property of type StringCollection. The generated Profile property of the current HttpContext will have strongly typed accessors for each of the specified properties.
<configuration>
<connectionStrings>
<add name="SqlServices" connectionString="Data Source=localhost;Integrated Security=SSPI;Initial Catalog=aspnetdb;" />
</connectionStrings>
<system.web>
<anonymousIdentification enabled="true" />
<profile defaultProvider="SqlProvider" >
<providers>
<add
name="SqlProvider"
connectionStringName="SqlServices"
applicationName="ProfileBaseApplication"
type="System.Web.Profile.SqlProfileProvider" />
</providers>
<properties>
<add name="ZipCode" allowAnonymous="true" />
<add name="RecentSearchList"
type="System.Collections.Specialized.StringCollection"
serializeAs="Xml"
allowAnonymous="true" />
</properties>
</profile>
</system.web>
</configuration>
The following ASP.NET page reads and sets the ZipCode property specified for the user profile.
Important
This example contains a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.
<%@ Page Language="C#" %>
<!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_PreRender()
{
if (Profile.ZipCode == null)
{
PersonalizePanel.Visible = false;
GetZipCodePanel.Visible = true;
}
else
{
ZipCodeLabel.Text = Profile.ZipCode;
// Get personalized information for zip code here.
PersonalizePanel.Visible = true;
GetZipCodePanel.Visible = false;
}
}
public void ChangeZipCode_OnClick(object sender, EventArgs args)
{
ZipCodeTextBox.Text = Profile.ZipCode;
Profile.ZipCode = null;
PersonalizePanel.Visible = false;
GetZipCodePanel.Visible = true;
}
public void EnterZipCode_OnClick(object sender, EventArgs args)
{
Profile.ZipCode = ZipCodeTextBox.Text;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Home Page</title>
</head>
<body>
<form id="form1" runat="server">
<table border="1" cellpadding="2" cellspacing="2">
<tr>
<td>
<asp:Panel id="PersonalizePanel" runat="Server" Visible="False">
Information for Zip Code: <asp:Label id="ZipCodeLabel" Runat="Server" /><br />
<!-- Information for Zip Code here. -->
<br />
<asp:LinkButton id="ChangeZipCodeButton" Runat="Server" Text="Change Your Zip Code"
OnClick="ChangeZipCode_OnClick" />
</asp:Panel>
<asp:Panel id="GetZipCodePanel" runat="Server" Visible="False">
You can personalize this page by entering your Zip Code:
<asp:TextBox id="ZipCodeTextBox" Columns="5" MaxLength="5" runat="Server" />
<asp:LinkButton id="EnterZipCodeButton" Runat="Server" Text="Go"
OnClick="EnterZipCode_OnClick" />
</asp:Panel>
</td>
</tr>
</table>
</form>
</body>
</html>
<%@ Page Language="VB" %>
<!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_PreRender()
If Profile.ZipCode = Nothing Then
PersonalizePanel.Visible = False
GetZipCodePanel.Visible = True
Else
ZipCodeLabel.Text = Profile.ZipCode
' Get personalized information for zip code here.
PersonalizePanel.Visible = True
GetZipCodePanel.Visible = False
End If
End Sub
Public Sub ChangeZipCode_OnClick(sender As Object, args As EventArgs)
ZipCodeTextBox.Text = Profile.ZipCode
Profile.ZipCode = Nothing
PersonalizePanel.Visible = False
GetZipCodePanel.Visible = True
End Sub
Public Sub EnterZipCode_OnClick(sender As Object, args As EventArgs)
Profile.ZipCode = ZipCodeTextBox.Text
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Home Page</title>
</head>
<body>
<form id="form1" runat="server">
<table border="1" cellpadding="2" cellspacing="2">
<tr>
<td>
<asp:Panel id="PersonalizePanel" runat="Server" Visible="False">
Information for Zip Code: <asp:Label id="ZipCodeLabel" Runat="Server" /><br />
<!-- Information for Zip Code here. -->
<br />
<asp:LinkButton id="ChangeZipCodeButton" Runat="Server" Text="Change Your Zip Code"
OnClick="ChangeZipCode_OnClick" />
</asp:Panel>
<asp:Panel id="GetZipCodePanel" runat="Server" Visible="False">
You can personalize this page by entering your Zip Code:
<asp:TextBox id="ZipCodeTextBox" Columns="5" MaxLength="5" runat="Server" />
<asp:LinkButton id="EnterZipCodeButton" Runat="Server" Text="Go"
OnClick="EnterZipCode_OnClick" />
</asp:Panel>
</td>
</tr>
</table>
</form>
</body>
</html>
Remarks
ASP.NET uses the ProfileBase class to create the class used for the user profile. When an application that has the user profile enabled is started, ASP.NET creates a new class of type ProfileCommon, which inherits from the ProfileBase class. Strongly typed accessors are added to the ProfileCommon class for each property defined in the profile configuration section. The strongly typed accessors of the ProfileCommon class call the GetPropertyValue and SetPropertyValue methods of the ProfileBase base class to retrieve and set profile property values, respectively. An instance of the ProfileCommon class is set as the value of the Profile property for the ASP.NET application.
Note
The base class used to generate the class stored in the Profile property can be overridden using the inherits attribute of the profile section of the configuration file. In this case you would specify a custom class that inherits from the ProfileBase base class.
This constructor is not intended to be used from application code. To create an instance of a user profile, use the Create method.
