Pass (Send) multiple values from one Page to other in ASP.Net using C# and VB.Net

Dear Sir,

How to pass multiple value from lgn.aspx Page to Index.aspx in asp c#

I want to send multiple value from one page to another page.

I am able to sent EmpCode value from lgn.aspx to Index.aspx but I unable to send EmpName values.

please help me sir.

namespace OCMS
{
    public partial class lgn : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            int companyId;
            string constr = ConfigurationManager.ConnectionStrings["constr"].ToString();
            using (SqlConnection con = new SqlConnection(constr))
            {
                using (SqlCommand cmd = new SqlCommand("SELECT * FROM tbl_Employees WHERE EmpCode=@EmpCode AND UserName=@UserName", con))
                {
                    DataTable dt = new DataTable();
                    SqlDataAdapter sda = new SqlDataAdapter(cmd);
                    cmd.Parameters.AddWithValue("@EmpCode", txtUserName.Text);
                    cmd.Parameters.AddWithValue("@UserName", txtPassword.Text);
                   
                    sda.Fill(dt);
                    if (dt.Rows.Count > 0)
                    {
                        companyId = int.Parse(dt.Rows[0]["CompanyId"].ToString());
                        switch (companyId)
                        {
                            case 1003:
                                string EmpId = txtUserName.Text;
                                Response.Redirect(string.Format("~/Index.aspx?EmpId={0}", EmpId));
                                break;
                            case 1002:
                                Response.Redirect("It_admin.aspx");
                                break;
                        }
                    }
                }
            }
        }
    }
}