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Select any item from the dropdownlist its related values will be displayed in the other webp

Posted By:satyapriyanayak       Posted Date: April 30, 2014    Points: 40    Category: ASP.NET Controls    URL: http://www.dotnetspark.com  

In this Code Snippets we will know when we select any item from the dropdownlist its related values will be displayed in the other webpage.
 

test1.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="test1.aspx.cs" Inherits="Dropdownlist_querystring.test1" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:DropDownList ID="DropDownList1" runat="server"
            onselectedindexchanged="DropDownList1_SelectedIndexChanged">
        </asp:DropDownList>
    </div>
    </form>
</body>
</html>

test1.aspx.cs

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 Dropdownlist_querystring
{
    public partial class test1 : System.Web.UI.Page
    {
        string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
        string str;
        SqlCommand com;

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                binddrop();
            }
        }
        private void binddrop()
        {
            
            DropDownList1.AutoPostBack = true;
            SqlConnection con = new SqlConnection(strConnString);

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

        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            Response.Redirect("test2.aspx?empid=" + DropDownList1.SelectedItem.Text + "");
        }
    }
}


test2.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="test2.aspx.cs" Inherits="Dropdownlist_querystring.test2" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <table border="1" style="border-collapse: collapse"  cellspacing="1">
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empname:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label1" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empaddress:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label2" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empsal:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label3" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empphone:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label4" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empfax:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label5" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empcity:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label6" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empstate:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label7" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empzip:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label8" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Emplic:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label9" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    <tr>
      <td width="77" height="16" align="left" ><b><font size="2" color="red">Empstatus:</font></b></td>
      <td width="77" height="16" align="left" ><b><font size="2">&nbsp;<asp:Label ID="Label10" runat="server" Font-Bold="True"></asp:Label><br /></font></b></td>
    </tr>
    </table>
    </div>
    </form>
</body>
</html>

test2.aspx.cs

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 Dropdownlist_querystring
{
    public partial class test2 : System.Web.UI.Page
    {
        string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
        string str;
        string s1;
        SqlCommand com;

        protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                SqlConnection con = new SqlConnection(strConnString);
                con.Open();
                s1 = Request.QueryString[0];
                str = "select * from employee where empid='" + s1 + "'";
                com = new SqlCommand(str, con);
                SqlDataReader reader;
                reader = com.ExecuteReader();
                if (reader.Read())
                {
                    Label1.Text = reader["empname"].ToString();
                    Label2.Text = reader["empaddress"].ToString();
                    Label3.Text = reader["empsal"].ToString();
                    Label4.Text = reader["empphone"].ToString();
                    Label5.Text = reader["empfax"].ToString();
                    Label6.Text = reader["empcity"].ToString();
                    Label7.Text = reader["empstate"].ToString();
                    Label8.Text = reader["empzip"].ToString();
                    Label9.Text = reader["emplic"].ToString();
                    Label10.Text = reader["empstatus"].ToString();
                }
            }
            catch (Exception ex)
            {
                Response.Write(ex.Message);
            }
        }
    }
}


     

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