using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.Security;



public partial class ShowSecurityTrimming : System.Web.UI.Page

{   

    protected void Page_Load(object sender, EventArgs e)

    {      

        if(!Page.IsPostBack)

            foreach (ListItem item in cbl.Items)

            {

                if (!Roles.RoleExists(item.Text))

                {

                    Roles.CreateRole(item.Text);

                    

                    Roles.AddUserToRole(User.Identity.Name, item.Text);                    

                }

                

                

            }       

    }

    protected void btn_Click(object sender, EventArgs e)

    {

        foreach(ListItem item in cbl.Items)

        {

            if(item.Selected)

            {

                if(!User.IsInRole(item.Text))

                    Roles.AddUserToRole(User.Identity.Name,item.Text);

            }

            else

            {

                if(User.IsInRole(item.Text))

                {

                    Roles.RemoveUserFromRole(User.Identity.Name,item.Text);                

                }

            }

        }

  &