รบกวนช่วยดูหน้า Update ให้หน่อยครับคือมันไม่ดึงข้อมูลมา Edit อ่ะ

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.Text;
using System.Security.Cryptography;//**md5**//

namespace User_Login
{
    public partial class frmUpdateProfile : System.Web.UI.Page
    {
       SqlConnection objConn;
       SqlCommand objCmd;

        //////** Password **///////
        public string EncMD5(string input)
        {
            MD5 md5Hashfc = MD5.Create();
            byte[] data = md5Hashfc.ComputeHash(Encoding.Default.GetBytes(input));
            StringBuilder sBuilder = new StringBuilder();
            int i = 0;
            for (i = 0; i <= data.Length - 1; i++)
            {
                sBuilder.Append(data[i].ToString("x2"));
            }
            return sBuilder.ToString();
        }
        /////**End Password **//////

        protected void Page_Load(object sender, EventArgs e)
        {
            //**Check login Status
           /* if (Session["strUsername"] == null)
                if (Convert.ToString(Session["strUsername"]) == "")
                {
                    Response.Redirect("index.aspx");
                    Response.End();
                }*/

            this.pnlProfile.Visible = true;
            this.pnlFinish.Visible = false;

            String strConnString;
            strConnString = "Data Source=OFF;Initial Catalog=customer;Integrated Security=True";
            objConn = new SqlConnection();
            objConn.ConnectionString = strConnString;
            objConn.Open();

            if (!Page.IsPostBack)
            {
                ShowDataInfo();
            }

        }

        protected void ShowDataInfo()
        {
            String strSQL;
                    //Get Data//
            //strSQL = "SELECT * FROM register  ";
            strSQL = "SELECT * FROM register WHERE username = '"+lblUsername.Text +"' ";
            SqlDataReader dtReader;
            objCmd = new SqlCommand(strSQL, objConn);
            dtReader = objCmd.ExecuteReader();

            if(dtReader.HasRows)
            {
                dtReader.Read();
                this.lblUsername.Text = dtReader["username"].ToString();
                this.txtLastname.Text = dtReader["lastname"].ToString();
                this.txtPassword.Text = dtReader["password"].ToString();
                this.txtAddress.Text = dtReader["address"].ToString();
                this.txtTel.Text = dtReader["tel"].ToString();
                this.txtMobile.Text = dtReader["mobile"].ToString();
                this.txtEmail.Text = dtReader["email"].ToString();
            }

            dtReader.Close();
            objConn.Close();
            objConn = null;

                    

        }


    }
}