ASP.NET

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 Interface_Project.Presenter.PresenterAdmin;
using Interface_Project.Model.ModelAdmin;

namespace Interface_Project
{
    public partial class ManageCity : System.Web.UI.Page
    {
        ModelCityDetails modelObjCity = null;
        protected void Page_Load(object sender, EventArgs e)
        {
            modelObjCity = new ModelCityDetails(this);
        }

        protected void btnAdd_Click(object sender, EventArgs e)
        {
            if(modelObjCity.insertCityDetails())
            {
                ClientScript.RegisterStartupScript(this.GetType(),"alert","<script>alert('City details inserted successfully.')</script>");
            }
            else
                ClientScript.RegisterStartupScript(this.GetType(),"alert","<script>alert('Error in inserting city details.')</script>");

        }
    }

    public partial class ManageCity : Interface_Project.Presenter.PresenterAdmin.ManageCity.IManageCity
    {
        public int cityid
        {
            get
            {
                return 0;
                //return int.Parse(hdnCityId.Value);
            }
            set
            {
                //hdnCityId.Value = value.ToString();
            }
        }

        public string cityname
        {
            get
            {
                return txtCity.Text;
            }
            set
            {
                txtCity.Text = value;
            }
        }
    }
}