How to make a class?

[Metalzed]

c# .NET
I want a method that works in every page in my website

I have done this so far

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Web.Sessionstate;

public class SafeClass
{
    public bool Safepage()
    {
        bool safe = true;
        
        if (Session["USERID"] == null) safe = false;
        else
        {
            if (Request.QueryString["ID"] != null)
            {

                if (Request.QueryString["ID"] != Session["USERID"].ToString()) safe = false;

            }
            else
                safe = false;
        }
        return safe;
    }
}

I get these errors

• The name 'Session' does not exist in the current context
• The name 'Request' does not exist in the current context
• The name 'Request' does not exist in the current context
• The name 'Session' does not exist in the current context

Why?

I am using System.Web.Sess ionstate. so it should find Session. when i have the same code in a page it works.

please help me i have search for help with this but havn't found it.

[axas]

Suppose you have a Login.aspx page with that code:

protected void Page_Load(objec t sender, EventArgs e) {
if ( Session["Username"] != null )
Response.Redire ct("Admin.aspx" );
}

// after clicking the login button
protected void btnLogin_Click( object sender, EventArgs e) {
int valid = Administrator.L ogin(txtUsernam e.Text, txtPassword.Tex t);

if ( valid != 0 ) {
Session["Username"] = txtUsername.Tex t;
Response.Redire ct("Admin.aspx" );
}
else {
lblMesage.Text = "Wrong password, username....... .....";
}
}


... And a Admin.cs file with this code:

public class Administrator
{
private SqlCommand cmd;

public Administrator()
{

}

public static int Login(string username, string password)
{
cmd = new SqlCommand(@"SE LECT COUNT(*) FROM tableX WHERE
username=@usern ame and password=@passw ord", ConnectionObjec t);
cmd.Parameters. Add("@username" , SqlDbType.Varch ar, 20, "username") ;
cmd.Parameters. Add("@password" , SqlDbType.Varch ar, 20, "password") ;
cmd.Parameters["@username"].Value = username;
cmd.Parameters["@password"].Value = password;
return cmd.ExecuteScal ar();
}
}

Namely, you can't have a Session object in a class.
Objects like Session or Request, can' t be in classes, but only in WebPages and WebUserControls .

[Metalzed]

Namely, you can't have a Session object in a class.
Objects like Session or Request, can' t be in classes, but only in WebPages and WebUserControls .

[/QUOTE]

Thanks. All i needed to know.