สอบถามเรื่องการแสดงชื่อผู้ใช้ที่ทำการ login เข้ามา จะเรียกใช้อย่างไร

        protected void ShowDataInfo()
        {
            SqlConnection objConn = null;
            string strConnString = null;
            StringBuilder strSQL = default(StringBuilder);
            SqlCommand objCmd = null;
            SqlDataReader dtReader = null;


            //*** Open Connection ***'
            strConnString = "Server=localhost;UID=sa;PASSWORD=;database=mydatabase;Max Pool Size=400;Connect Timeout=600;";
            objConn = new SqlConnection();
            objConn.ConnectionString = strConnString;
            objConn.Open();

            //*** Get Data ***'
            strSQL = new StringBuilder();
            strSQL.Append(" SELECT * FROM member ");
            strSQL.Append(" WHERE Username = @sUsername ");
            objCmd = new SqlCommand(strSQL.ToString(), objConn);
            objCmd.Parameters.Add("@sUsername", SqlDbType.VarChar).Value = Session["strUsername"];
            dtReader = objCmd.ExecuteReader();

            if (dtReader.HasRows)
            {
                dtReader.Read();
                this.lblUsername.Text = dtReader["Username"].ToString();
                this.txtName.Text = dtReader["Name"].ToString();
                this.txtEmail.Text = dtReader["Email"].ToString();
                this.txtCountry.Text = dtReader["Country"].ToString();
            }

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

        }

            DataTable dt = new DataTable();
            string sql2 = @"SELECT * FROM Login WHERE ( username = '" + txtlogin.txt + "')";
            SqlCommand command = new SqlCommand(sql2, connection);
            SqlDataAdapter adapter = new SqlDataAdapter(command);
            adapter.Fill(dt);
            if (dt.Rows.Count > 0)
            {
                txtName.Text = (string)dt.Rows[0]["Name"];
             }