How to select between two columns amount values?

Hi Magesh,


<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm3.aspx.cs" Inherits="Paging_in_GridView.WebForm3" %>





   


   

   

       
   
       
       

       
                onselectedindexchanged="DropDownList2_SelectedIndexChanged">


   

   
   
   

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;
namespace Paging_in_GridView
{
    public partial class WebForm3 : System.Web.UI.Page
    {
        string connStr = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
        SqlCommand com;
        string str;
       
    

        protected void Page_Load(object sender, EventArgs e)
        {
           
            DropDownList1.AutoPostBack = true;
            DropDownList2.AutoPostBack = true;
            SqlConnection con = new SqlConnection(connStr);

            if (!IsPostBack)
            {
                DropDownList1.Items.Add("Choose fromamount");
                con.Open();
                str = "select * from  Mobile";
                com = new SqlCommand(str, con);
                SqlDataReader reader = com.ExecuteReader();
                while (reader.Read())
                {
                    DropDownList1.Items.Add(reader["fromamount"].ToString());
                }
                reader.Close();
                con.Close();



                DropDownList2.Items.Add("Choose endamount");
                con.Open();
                str = "select * from  Mobile";
                com = new SqlCommand(str, con);
                SqlDataReader reader1 = com.ExecuteReader();
                while (reader1.Read())
                {
                    DropDownList2.Items.Add(reader1["endamount"].ToString());
                }
                reader1.Close();
                con.Close();
               
            }
          
           
        }

        protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
        {
           
            SqlConnection con = new SqlConnection(connStr);
            try
            {

                con.Open();
                str = "select model from Mobile where fromamount between '" + DropDownList1.SelectedItem.Text + "'  and  '" + DropDownList2.SelectedItem.Text + "' ";
                com = new SqlCommand(str, con);
                GridView1.DataSource = com.ExecuteReader();
                GridView1.DataBind();
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
            con.Close();
           
        }
    }
}



Thanks
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