Display selected row value of GridView in dropdowlist

In this blog we will know how to display selected row value of a grid view in dropdown list.

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

<!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:GridView ID="GridView1" runat="server" AutoGenerateSelectButton="true"  AutoGenerateColumns="true"
        BackColor="#CCFFCC" Font-Bold="False" ForeColor="Maroon"
            onselectedindexchanged="GridView1_SelectedIndexChanged">
        <AlternatingRowStyle BackColor="#FFCC66" />
    </asp:GridView>
    <br />
    <asp:Label ID="lb1" runat="server" Text="ID : " Font-Bold="True" Width="100px"></asp:Label>
        <asp:DropDownList ID="ddl_id" runat="server">
        </asp:DropDownList>
    <br />
    <br />
    <asp:Label ID="lb3" runat="server" Text="NAME : " Font-Bold="True"
        Width="100px"></asp:Label>
    <asp:DropDownList ID="ddl_name" runat="server">
        </asp:DropDownList>
    <br />
    <br />
    <asp:Label ID="lb5" runat="server" Text="ADDRESS : " Font-Bold="True"
        Width="100px"></asp:Label>
   <asp:DropDownList ID="ddl_address" runat="server">
        </asp:DropDownList>
    <br />
    <br />
    <asp:Label ID="lb7" runat="server" Text="MARK : " Font-Bold="True"
        Width="100px"></asp:Label>
    <asp:DropDownList ID="ddl_marks" runat="server">
        </asp:DropDownList>
    <br />
    <br />
    <asp:Label ID="lb9" runat="server" Text="YEAR : " Font-Bold="True"
        Width="100px"></asp:Label>
   <asp:DropDownList ID="ddl_year" runat="server">
        </asp:DropDownList>
    </div>
    </form>
</body>
</html>


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 Select_row_value_gridview_dropdown
{
    public partial class _Default : System.Web.UI.Page
    {
        string strConnString = ConfigurationManager.ConnectionStrings["ConnectionString"].ConnectionString;
        string str;
        SqlCommand com;
        SqlDataAdapter sqlda;
        DataSet ds;

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                bindgrid();
            }
        }
        void bindgrid()
        {
            SqlConnection con = new SqlConnection(strConnString);
            con.Open();
            str = "select * from student";
            com = new SqlCommand(str, con);
            sqlda = new SqlDataAdapter(com);
            ds = new DataSet();
            sqlda.Fill(ds, "student");
            GridView1.DataSource = ds;
            GridView1.DataMember = "student";
            GridView1.DataBind();
            con.Close();
        }

        protected void GridView1_SelectedIndexChanged(object sender, EventArgs e)
        {
            ddl_id.Items.Clear();
            ddl_name.Items.Clear();
            ddl_address.Items.Clear();
            ddl_marks.Items.Clear();
            ddl_year.Items.Clear();

            ddl_id.Items.Add(GridView1.SelectedRow.Cells[1].Text);
            ddl_name.Items.Add(GridView1.SelectedRow.Cells[2].Text);
            ddl_address.Items.Add(GridView1.SelectedRow.Cells[3].Text);
            ddl_marks.Items.Add(GridView1.SelectedRow.Cells[4].Text);
            ddl_year.Items.Add(GridView1.SelectedRow.Cells[5].Text);
        }
    }
}

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