MVC DropDownList problem

Hi,

For Fill Dropdown Dynamically you need to use $.getJSON method using this you can get data from your controller you have one controller city  when one action is there

 

Code in MVc Site

   public class CityController {

 public ActionResult FillCity(int64 CountryId)

{  

    SelectList CityList= (SelectList )('Code for collect from database

    return Json(agreementList);

)

}

 

Routes in global.asax

 

   routes.MapRoute(

              "GetCityList",

              "City/{ CountryId } ",

              new { controller = "City", action = " FillCity", CountryId = "0" });

 

Code in Javascript

$.getJSON("/City"+ CountryId, null, function(jsonSiteData) {

for (var i = 0; i < jsonSiteData.length; i++) {

//Here you need to fill data into option

}

}

Regards,
Bhavik

Hi Rohit,

Here is your solution,Run the attachment.


Default.aspx code

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>





   


   

   

   

    
                  onselectedindexchanged="DropDownList_country_SelectedIndexChanged">
   
       

   
   
   
   

   

Default.aspx.cs code

using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
public partial class _Default : System.Web.UI.Page
{
    string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
    string str;
    SqlCommand com;
    protected void Page_Load(object sender, EventArgs e)
    {
       
        SqlConnection con = new SqlConnection(strConnString);
      
        if (!IsPostBack)
        {
            DropDownList_country.Items.Add("Choose country");
            con.Open();
            str = "select country from area group by country";
            com = new SqlCommand(str, con);
            SqlDataReader reader = com.ExecuteReader();
            while (reader.Read())
            {
                DropDownList_country.Items.Add(reader["country"].ToString());
            }
            reader.Close();
            con.Close();
        }
        DropDownList_state.Items.Clear();
    
    }



    protected void DropDownList_country_SelectedIndexChanged(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(strConnString);
        con.Open();
        str = "select * from area where country='" + DropDownList_country.SelectedItem.Text + "'";
        com = new SqlCommand(str, con);
        SqlDataReader reader = com.ExecuteReader();
        while (reader.Read())
        {
            DropDownList_state.Items.Add(reader["state"].ToString());
        }
        reader.Close();
        con.Close();
    }
}







Thanks
If this post helps you mark it as answer