A user-processing mechanism based on. Net.

User processing mechanism based on the. NET principal, Identity interface.
SiteIdentity.cs
Using System;
Using System.Text;
Using System.Collections;
Using System.Security.Cryptography;
Namespace Contextuser
{
<summary>
Summary description of the siteidentity.
</summary>
public class SiteIdentity:System.Security.Principal.IIdentity
{
private string UserName;
private string EmailAddress;
private int UserID;

Public siteidentity (String currentusername)
{
UserName = CurrentUserName;
EmailAddress = "test@msn.com";
UserID = 1;
}
public string AuthenticationType
{
Get
{
Return "Custom Authentication";
}
Set
{
Doing nothing
}
}
public bool IsAuthenticated
{
Get
{
Assumption:all instances of a siteidentity have already
been authenticated.
return true;
}
}
public string Name
{
Get
{
return userName;
}
}
public string EmailAddress
{
Get
{
return emailaddress;
}
}
public int UserID
{
Get
{
return UserID;
}
}
}
}
-----------------------------------------------------------------------------------------------
SitePrincipal.cs
Using System;
Using System.Collections;
Using System.Security;
Using System.Security.Cryptography;
Namespace Contextuser
{
<summary>
Summary description of the Siteprincipal.
</summary>
public class SitePrincipal:System.Security.Principal.IPrincipal
{
protected System.Security.Principal.IIdentity identity;
Protected ArrayList permissionlist;//License Dynamic array
Protected ArrayList rolelist;//role Dynamic Array
Public System.Security.Principal.IIdentity Identity
{
Get
{
return identity;
}
Set
{
identity = value;
}
}
Public Siteprincipal (string username)//constructor logic
{

identity = new Siteidentity (username);
Rolelist = new ArrayList ()///Add role array can be used to retrieve values from the database instead
Rolelist.add ("Admin");
Rolelist.add ("123");
Permissionlist = new ArrayList ();
Permissionlist.add (2);
Permissionlist = Datauser.geteffectivepermissionlist (UserID);
Rolelist = Datauser.getuserroles (UserID);
}
public static Siteprincipal Validatelogin (string Username, string password)/Verify Login
{
if (username = = "1111111" && password = = "1111111")//can be used to validate the substitution from the database
{
return new Siteprincipal (username);
}
Else
{
return null;
}

}
public bool IsInRole (string role)
{
return Rolelist.contains (role);
}
public bool Haspermission (int PermissionID)
{
Return Permissionlist.contains (PermissionID);
}
Public ArrayList Roles
{
Get
{
return rolelist;
}
}
Public ArrayList Permissions
{
Get
{
return permissionlist;
}
}
}
}

The following inheritance page is used for pages that require validation
BasePage.cs
Using System;
Using System.Web;
Using System.Web.UI;
Using System.Diagnostics;
Namespace Contextuser
{
<summary>
Summary description of the basepage.
</summary>
public class BasePage:System.Web.UI.Page
{
Public BasePage ()
{
}
protected override void OnInit (EventArgs e)
{
Base. OnInit (e);
This. Load + = new System.EventHandler (this. Basepage_load);
}
private void Basepage_load (object sender, System.EventArgs e)
{

if (Context.User.Identity.IsAuthenticated)
{
if (!) ( Context.User is Siteprincipal))
{
Response.Write ("Context.User.Identity.Is authenticated");
Siteprincipal NewUser = new Siteprincipal (Context.User.Identity.Name);
Context.User = NewUser;
Response.Write (Context.User.IsInRole ("123"));
}

}
}


}
}
--------------------------------------------------------------------------
Landing page
Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.Security;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
Namespace Contextuser
{
<summary>
Summary description of the WebForm1.
</summary>
public class WebForm1:ContextUser.BasePage
{
protected System.Web.UI.WebControls.TextBox username;
protected System.Web.UI.WebControls.TextBox pwd;
protected System.Web.UI.WebControls.Label Label1;
protected System.Web.UI.WebControls.Label Label2;
protected System.Web.UI.WebControls.Button Button1;

private void Page_Load (object sender, System.EventArgs e)
{
Place user code here to initialize page
}
Code generated #region the Web forms Designer
Override protected void OnInit (EventArgs e)
{
//
CodeGen: This call is required for the ASP.net Web forms Designer.
//
InitializeComponent ();
Base. OnInit (e);
}

<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
This. Button1.Click + = new System.EventHandler (this. Button1_Click);
This. Load + = new System.EventHandler (this. Page_Load);
}
#endregion
private void Button1_Click (object sender, System.EventArgs e)
{
Siteprincipal principal = Siteprincipal.validatelogin (username. Text,pwd. Text);
if (principal==null)
{
Label1.Text = "Incorrect username or password";

}
Else
{
Context.User = Principal;
Formsauthentication.setauthcookie (username. Text, True);
if (Context.User.IsInRole ("123"))
{
Label2.Text = "User" + Context.User.Identity.Name + "belongs to admin Group";
}
Else
{
Label2.Text = "User" + Context.User.Identity.Name + "does not belong to admin group";
}
}
}
}
}
---------------------------------------------------
Validation page needs to inherit BasePage
Using System;
Using System.Collections;
Using System.ComponentModel;
Using System.Data;
Using System.Drawing;
Using System.Web;
Using System.Web.SessionState;
Using System.Web.UI;
Using System.Web.UI.WebControls;
Using System.Web.UI.HtmlControls;
Namespace Contextuser
{
<summary>
Summary description of the _default.
</summary>
public class _default:contextuser.basepage
{
protected System.Web.UI.WebControls.Label Label1;

private void Page_Load (object sender, System.EventArgs e)
{
if (! Context.User.Identity.IsAuthenticated | |
! ((Siteprincipal) context.user). Haspermission (2))
{
Page.Response.Redirect ("WebForm1.aspx");

}
Else
{
Page.Response.Write ("through");
}


}
Code generated #region the Web forms Designer
Override protected void OnInit (EventArgs e)
{
//
CodeGen: This call is required for the ASP.net Web forms Designer.
//
Base. OnInit (e)//------------------------------------------------------------notice it needs to be placed above.
InitializeComponent ();

}

<summary>
Designer supports required methods-do not use the Code editor to modify
The contents of this method.
</summary>
private void InitializeComponent ()
{
This. Load + = new System.EventHandler (this. Page_Load);
}
#endregion
}
}

Refer to some of the user's article and Wrox site advanced programming in this thanks!