can anybody solve this?

hi

how to define for Users and Validateuser?

am getting some error in my code

<pre>using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Data.SqlClient;
using System.Configuration;

public partial class ImagePopup : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void GetUsers()
    {       
        DataTable dt;
        dt = Users.getUsers(1);//here am getting error for Users
        DataView dv = dt.DefaultView;
        grdPublicDir.DataSource = dv;
        grdPublicDir.DataBind();

    }
    protected void grdPublicDir_RowCommand(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "ViewProfile")
        {
            ProfileInfo(Convert.ToInt32(e.CommandArgument.ToString()));
            viewProfile.Show();

        }
    }

    protected void ProfileInfo(int pID)
    {
        
        try
        {
           DataTable dt = Validateuser.getprofile(pID);//and here for Validateuser am getting error like not defined.            

            if (dt.Rows.Count &gt; 0)
            {
                //Code to assign values to controls               
             }

        }

        catch (Exception ex)
        {

        }
    }    
}</pre>

thank you