by using the json passing only

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="_2905json_passing.WebForm1" %>

Bind Dropdownlist json

aspx.cs code

using System;

using System.Collections;

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;

using System.Collections.Generic;

using System.Web.Services;

using Newtonsoft.Json;

using System.Web.Script.Serialization;

namespace _2905json_passing

{

public partial class WebForm1 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

var data = BindDropdownlist();

DropDownList1.DataSource = data;

DropDownList1.DataBind();

DropDownList1.Items.Insert(0, "Select name");

}

public static string[] BindDropdownlist()

{

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ConnectionString);

DataTable dt = new DataTable();

SqlDataAdapter da = new SqlDataAdapter("Select Name from Customers", con);

da.Fill(dt);

return dt.AsEnumerable().Select(k => k[0] + "").ToArray();

}

public static string Getdata(string Names)

{

if(BindDropdownlist().Contains(Names))

{

SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ConnectionString);

SqlCommand cmd =new SqlCommand("select * from Customers" + Names ,con);

SqlDataAdapter da=new SqlDataAdapter(cmd);

DataTable dt=new DataTable();

da.Fill(dt);

string jsdata=JsonConvert.SerializeObject(dt);

return jsdata;

}

else

return "Names are not showing";

}

in that above based on the dropdown selection that value move to the text box