Archiv für den Monat Juli 2007

Creating DAL components using custom ASP.NET build providers and compiler techniques

In September 2006 I wrote an article about build providers in ASP.NET on CodeProject.com. This article describes how to create Data Access Layer Components (DALC) using build providers and a self-defined description language, including an easy scanner, parser, and CodeDOM generator. The article is also available as PDF file at the Parago website. Feel free to send me your feedback.

Creating Custom Windows Authentication Roles In ASP.NET

A while ago one of my customer asked me to extend the Windows authentication process within an ASP.NET intranet application. The custom roles for the authenticated users should be determined by querying special flags in a database table and by querying the Active Directory for that user.

One way to accomplish this task is to create a custom class which derives from WindowsPrincipal called RolesWindowsPrincipal. The new class extends the existing class with methods to add new roles depending on the queries described above.

The implementation is quite simple:

public class RolesWindowsPrincipal : WindowsPrincipal
{
List _roles;

public RolesWindowsPrincipal(WindowsIdentity identity) : base(identity)
{
_roles=new List();
}

public override bool IsInRole(string role)
{
return _roles.Contains(role);
}

public void AddRole(string role)
{
_roles.Add(role);
}
}