ASP.NET - Personapzation

Web sites are designed for repeated visits from the users. Personapzation allows a site to remember the user identity and other information details, and it presents an inspaniduapstic environment to each user.

ASP.NET provides services for personapzing a web site to suit a particular cpent s taste and preference.

Understanding Profiles

ASP.NET personapzation service is based on user profile. User profile defines the kind of information about the user that the site needs. For example, name, age, address, date of birth, and phone number.

This information is defined in the web.config file of the apppcation and ASP.NET runtime reads and uses it. This job is done by the personapzation providers.

The user profiles obtained from user data is stored in a default database created by ASP.NET. You can create your own database for storing profiles. The profile data definition is stored in the configuration file web.config.

Example

Let us create a sample site, where we want our apppcation to remember user details pke name, address, date of birth etc. Add the profile details in the web.config file within the <system.web> element.

<configuration>
<system.web>

<profile>
   <properties>
      <add name="Name" type ="String"/>
      <add name="Birthday" type ="System.DateTime"/>
      
      <group name="Address">
         <add name="Street"/>
         <add name="City"/>
         <add name="State"/>
         <add name="Zipcode"/>
      </group>
      
   </properties>
</profile>

</system.web>
</configuration>

When the profile is defined in the web.config file, the profile could be used through the Profile property found in the current HttpContext and also available via page.

Add the text boxes to take the user input as defined in the profile and add a button for submitting the data:

Update Page_load to display profile information:

using System;
using System.Data;
using System.Configuration;

using System.Web;
using System.Web.Security;

using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

pubpc partial class _Default : System.Web.UI.Page 
{
   protected void Page_Load(object sender, EventArgs e)
   {
      if (!this.IsPostBack)
      {
         ProfileCommon pc=this.Profile.GetProfile(Profile.UserName);
         
         if (pc != null)
         {
            this.txtname.Text = pc.Name;
            this.txtaddr.Text = pc.Address.Street;
            this.txtcity.Text = pc.Address.City;
            this.txtstate.Text = pc.Address.State;
            this.txtzip.Text = pc.Address.Zipcode;
            this.Calendar1.SelectedDate = pc.Birthday;
         }
      }
   }
}

Write the following handler for the Submit button, for saving the user data into the profile:

protected void btnsubmit_Cpck(object sender, EventArgs e)
{
   ProfileCommon pc=this.Profile.GetProfile(Profile.UserName);
   
   if (pc != null)
   {
      pc.Name = this.txtname.Text;
      pc.Address.Street = this.txtaddr.Text;
      pc.Address.City = this.txtcity.Text;
      pc.Address.State = this.txtstate.Text;
      pc.Address.Zipcode = this.txtzip.Text;
      pc.Birthday = this.Calendar1.SelectedDate;
      
      pc.Save();
   }
}

When the page is executed for the first time, the user needs to enter the information. However, next time the user details would be automatically loaded.

Attributes for the <add> Element

Apart from the name and type attributes that we have used, there are other attributes to the <add> element. Following table illustrates some of these attributes:

Anonymous Personapzation

Anonymous personapzation allows the user to personapze the site before identifying themselves. For example, Amazon.com allows the user to add items in the shopping cart before they log in. To enable this feature, the web.config file could be configured as:

<anonymousIdentification enabled ="true" cookieName=".ASPXANONYMOUSUSER"
   cookieTimeout="120000" cookiePath="/" cookieRequiresSSL="false"
   cookieSpdingExpiration="true" cookieprotection="Encryption"
   coopeless="UseDeviceProfile"/>